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Poor Man's Whole House Audio?

robtheauditor asks: "I would love to have my music in all the various rooms of our house. I can't afford the thousands for a turnkey system. What are the possibilities for a poor man's whole house audio system? For example, would it be possible to take my PC external audio connector and feed it to a bunch of powered speakers in different rooms? Could I just bring a bunch of 3.5mm plugs wired together in parallel, or would that not work? I was thinking that even if the signal is weak because it is split to 6 different speaker pairs, because the speakers are powered it wouldn't matter. Or will I risk burning out my sound card?"

102 comments

  1. Preamp necessary by TripMaster+Monkey · · Score: 5, Insightful


    Could I just bring a bunch of 3.5mm plugs wired together in parallel, or would that not work? I was thinking that even if the signal is weak because it is split to 6 different speaker pairs, because the speakers are powered it wouldn't matter. Or will I risk burning out my sound card?

    Doesn't matter if the speakers are powered...by the time you split the signal six ways it'll be so attenuated that amplifying it at the destination will also amplify the problems, including distortion and noise in the line (especially if your speaker wires are unshielded). If you want to supply six pairs of speakers, you'll need a very strong starting signal..and your soundcard by itself is probably not up to the challenge. You'll have to preamp the signal before you split it. Shielded speaker wires wouldood idea as well. be a g

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  2. Pretty happy with Airport Express. by Orrin+Bloquy · · Score: 0

    Sorry, no fp joke here.

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    1. Re:Pretty happy with Airport Express. by Anonymous Coward · · Score: 1, Funny

      No fp, either.

    2. Re:Pretty happy with Airport Express. by Anonymous Coward · · Score: 1, Funny

      Oh, burn!

  3. Idea by PunkOfLinux · · Score: 3, Interesting

    Use some light switches, so that when you enter a room all you have to do is flip the switch, and speakers come on. You could even get some of those switches where only one can be on at a time.

    1. Re:Idea by fit4130 · · Score: 1

      It'd probably be best to run the little signal that comes out of the sound card through a splitter then amp it up for each set of speakers you'll need.

    2. Re:Idea by TheCarlMau · · Score: 1

      This is a waste of electricity during the day though. :-)

    3. Re:Idea by BushCheney08 · · Score: 1

      No way, man. Forget the light switch. Get a bunch of Clappers!

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    4. Re:Idea by itzdandy · · Score: 2, Funny

      what if a song contained people clapping?

      "naaa na na na naaa *clap* *clap*" ......silence!

    5. Re:Idea by BushCheney08 · · Score: 1

      That brings up something I've always wondered about. What happens to people who bought Clappers when a commercial for the Clapper comes on?

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      Be a real patriot: Question authority. Think for yourself. Formulate your own conclusions.
  4. Squeezeboxes are very good... by Malor · · Score: 2, Interesting

    The Squeezeboxes are about $200 each for the wired model 2, which is identical to the snazzier model 3 except for the appearance. $250 for the wireless version. (add $50 for Model 3s). Their hardware is extremely good, with top-quality DACs and very low-jitter digital outs. They'll outperform CD players that are much more expensive.

    You'll need a computer to run the music server software. You can then easily sync up multiple rooms... and they all come with quite lovely displays and very useful remotes. This would be one of the cheaper ways to do this, and it has a nice side effect of being very, very high-quality.

    But you still need amplification and speakers in every room, and that's going to add a buttload to the cost. You're essentially trying to buy six stereo systems on the cheap. I'd suggest repeated trips to pawn shops and Goodwill stores to get the sound gear... and then add your distributed music system from there.

    The Squeezeboxes would make a really excellent backbone, but getting the signal to a room won't matter if you have nothing to play it back with.

    1. Re:Squeezeboxes are very good... by danpritts · · Score: 1

      Do you have any knowledge of the quality of the DACs and other components in the Roku soundbridge? These can be had for as little as $100 (m500, now $150 with $50 rebate).

      They're even compatible with the slimserver software, which strikes me as a very good solution.

      I like the idea of supporting the squeezebox people but i don't like the idea of spending $250 on the thing when there's a $100 alternative. I'm a cheapskate, i know.

    2. Re:Squeezeboxes are very good... by Malor · · Score: 1

      I don't have strong knowledge, but after reading the Slim forums for awhile, I get the feeling that the people who know what they're doing are Not Impressed.

      I do know that their new M1001 will no longer do lossless.... they were so cheap on the design that they bought a part that resamples everything to 48khz. This messes up the sound... for some people, pretty badly. And it will definitely break DTS-encoded 44.1Khz WAV files. When asked about that, they just sort of vaguely said something about how DTS couldn't be 44.1... meaning they A) don't really understand DTS, and B) while they claim DTS support on the box, they obviously didn't actually test it very well.

      The Squeezebox hardware is really, really good... the equivalent of $1k+ CD players. If you don't have a good stereo, it may not be that much of a difference for you. But it's something you'll keep a long time. With no moving parts, it should last as long as the electronics hold out. And it supports the 11g standard, which will, presumably, be around and supported a lot longer than B, which is all the Soundbridges can handle. It wouldn't shock me at all if you were still using that exact same box 15 years from now.

      I tend to believe that if you buy cheap, you buy twice.

      I'd suggest downloading the Slimserver software and playing with it. It has a Java emulator of the Squeezebox, called SoftSqueeze. That'll let you essentially take the software and interface for a test run, and it won't cost you a penny. (It's all open source.) If you like it, great... if not, all you invested was a little time.

    3. Re:Squeezeboxes are very good... by danpritts · · Score: 1

      thanks for the info.

      re: "if you buy cheap you buy twice": that's almost certainly true. In fact, it's generally my goal with technology purchases - spend $100 now and $100 later instead of $250 now.

      For stereo purchases, i've done both ways - i have a half-decent adcom & b+w system for the main stereo that i spent real money on, and i have a sony receiver with jvc speakers i spent $120 on (used - probably list price $400 worth of gear) that i use much more often since it's in the kitchen where we spend most of our time. I wouldn't hear the difference with the cheap system. I might, or might not, with the good stuff.

      perhaps the real question for me is whether this is a stereo purchase or a technology purchase. it's both, of course, but how do i treat it?

      peace

    4. Re:Squeezeboxes are very good... by Malor · · Score: 1

      I'm guessing here, but I think it's more of a music purchase, in that you're likely to keep it a long time. Music reproduction hasn't fundamentally changed much since the advent of the CD, more than twenty years ago. It's not like they're going to go away anytime soon... SACD and DVD-A appear to be going precisely nowhere. You're not tracking a moving target in quite the same way that you are with most technology. It'll play music very well now, but in ten years, it'll probably STILL play music very well by the standards then.

      There'll be networked video boxes eventually, and those will be a serious moving target as new/better/faster codecs come out, and hardware gets upgraded... that'll be a ratrace very much like computers have been, and your buy cheap strategy will probably work very well there. And if you don't like the idea of separate boxes for music and video, you could hold off.

      But for music, I think the simple elegance of the SB is likely to really last. The video boxes probably won't play as well, and it's virtually certain they won't play better, because the SB is already so close to perfect. At BEST you'll equal the music performance and add video.... so why not get superb music playback now, and add video later?

      I'd tend to agree, btw, that you probably won't hear the difference with the cheaper gear. It wasn't until I bought very good speakers that I was able to hear the Creative 48khz resample. It's very obvious on the big stereo, but even now, I really can't hear it on my computer speakers. On your better stuff... you might hear it, you might not. The Roku may be adequate.

      Since this is likely to be a long-term keeper, I'd personally try to get something good. But make sure you play with the server software enough to be comfortable with it. Make sure it does what you need. It's good, but it doesn't have the simple elegance of iTunes for things like playlist management.

      The SB2 hardware is eminently hackable, but it hasn't been hacked yet to talk to any other software that I know of....so be sure the software that's there works for you. And if it's close, but not quite there... remember you can contribute to the project. It's open source.

  5. Too much splitting! by rocjoe71 · · Score: 2, Interesting
    A signal split that many times is going to be no good.

    Take a trip to your local Radio Shack and look for something called a speaker switch box. It would look like a small brick with a knob on the front with the letters "A", "B", etc. on it, and plugs on the back for input/output signals. This would have the net effect of unplugging thhe unused speakers from your soundcard without the need for plugging/unplugging the cables yourself, sparing you the signal degradation.

    If you're at all handy with a soldering iron, you could probably make your own speaker switch box with $5 or $10 worth of parts.

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    1. Re:Too much splitting! by Chirs · · Score: 1

      See above posts (with math even!) to explain why you are incorrect.

      Powered speakers provide fairly high input impedence. You can run many of them in parallel before you get down to them impedence level of headphones (which many consumer soundcards are designed to drive).

  6. Easy-Peasy by Jah-Wren+Ryel · · Score: 5, Funny

    What are the possibilities for a poor man's whole house audio system?

    That would be a walkman and a pair of headphones.

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    1. Re:Easy-Peasy by styrotech · · Score: 5, Funny

      I was just going to suggest turning up the volume right up.

    2. Re:Easy-Peasy by shigelojoe · · Score: 1

      Even easier, just turn the stereo system up to 11.

      Your stereo goes up to 11, right? It's one louder than 10.

    3. Re:Easy-Peasy by sharkey · · Score: 1

      Cranking it to eleven ought to do the job.

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    4. Re:Easy-Peasy by FreakyGeeky · · Score: 1

      You might need an amplifier that goes up to eleven for that.

  7. The simple, obvious solution works just fine by wufpak · · Score: 3, Informative
    Could I just bring a bunch of 3.5mm plugs wired together in parallel, or would that not work?

    That approach has worked great for me, driving a set of three powered speaker pairs. Radio Shack even sells a one-in/three-out adapter plug; I use that to split the signal three ways, coming right off the soundcard speaker jack. Then I run 30-50 feet of shielded audio cable (bought in bulk and then connectorized; an easy soldering job) to each of the three powered speaker sets. Sound quality is fine.

    I'm guessing that a six-way split would work just as well as my three-way split does.

  8. radio shack by way2trivial · · Score: 1
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  9. Wireless may work? by Mitsoid · · Score: 4, Interesting

    A friend of mine was considering using an FM Modulator from his PC to broadcast the computer's audio across into another room for his speaker system.. In theory you could do this buying 1 FM Modulator and some basic clock/radio's.. Not super high-tech, not super-powerful, but gives you sound in every room ? Problem would be finding an FM modulator running off AC power -- most are designed for Car's to go from CD-players or mp3 players to car audio... Hell, I might try this myself.. being that I spend most my time in my basement / workshop, I don't get a strong signal for any station without the single cable I have running down from my Antenna on the roof... I could easily set this up and broadcast music into my Exercise room, or my Work room.. as well as my home theater system's reciever... Probably would get a better singal then a 6-spliced wire... but not better then a straight connection, or a two-splice connection... but im not an electrician, I just play with sound systems a lot :-)

    1. Re:Wireless may work? by adolf · · Score: 1

      A variety of FM transmitters can be had at Ramsey Electronics, in kit form or preassembled. They are, generally, not very expensive.

      Google for them.

    2. Re:Wireless may work? by unitron · · Score: 2, Insightful
      "Problem would be finding an FM modulator running off AC power..."

      Considering that he would be feeding it from the sound card, and it would therefore be right there at his computer, he could probably steal the small amount of 12 Volt current needed right from the computer's power supply.

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    3. Re:Wireless may work? by Slashdot+Junky · · Score: 1

      This is exactly what I intend to do with mp3 jukebox eventually. I will add code to my existing project to use the FM transmitter as a player. This player would be independent of direct to stereo connection and the clients listening to independent http streams. With the right PC, it would be possible to broadcast different music on different FM stations allowing tuned people to play what they want.

      -Slashdot Junky

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    4. Re:Wireless may work? by BushCheney08 · · Score: 1

      I know someone who took this exact route. Hook the signal up to a low power FM transmitter. Suddenly, any FM radio in the house can tune in.

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      Be a real patriot: Question authority. Think for yourself. Formulate your own conclusions.
    5. Re:Wireless may work? by LWATCDR · · Score: 1

      Get a wall wart. The FM transmitter I have has a jack. Just get a 12 volt wall wart with the right plug and your golden. If the one you pick doesn't have a jack a trip to radio shack, an xacto knife, and a little bit of solder can fix that.

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    6. Re:Wireless may work? by Sewer+Panda · · Score: 1

      I actually did this in my last house (a townhouse). We had a whole house speaker system, and connections where I hooked up an amplifier with a built-in radio, but that was all in the basement, and my computer (and all of it's music) was upstairs in my study. My solution was to use the FM Transmitter we had bought for our iPod (which has both a car adapter and a wall adapter)...Plugging into the computer proved to produce good sound quality, which I was surprised about, and I didn't have to move my computer or run extra cables!

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    7. Re:Wireless may work? by hurfy · · Score: 1

      That was what i was gonna say.

      Tried this and it worked fine. I found a micro transmitter preassembled witha jack for a wall wart for like $30 or so. Simply find an appropriate transformer (had one laying around) and a cable (i came from my stereo, computer and TV go into stereo first)

      Bonus, i can slap on some FM headphones and go to 7-11 without missing a beat :)

      Might check your radio dial for nice large dead spot, although i didnt even need to change defaults on mine.

      As long as this solution doesn't become too popular ;)

    8. Re:Wireless may work? by AJ+Mexico · · Score: 1
      An FM modulator works for me -- but beware, you must get a decent modulator to get good sound without constantly fiddling with things. I built one from a kit -- it's great, but only if you don't mind assembling a lot of loose parts into a transmitter.

      I use the MPX96 FM modulator from North Country Radiohttp://www.northcountryradio.com/Kitpages/mpx 96.htm

      Also, the ability to power your transimtter from AC is part of the trick -- it's easy to get them to run quietly from a battery (DC). If you use a wall-wart transformer without careful precautions, you will get a lot of hum in the signal. The kit above has instructions on how to use an AC transformer, but results may vary. Mine works great.

      --
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  10. FM Transmitter + Cheap Radios by wcspxyx · · Score: 5, Insightful

    Seriously. Spend your money on getting a really good FM transmitter. Then any radio you can buy becomes a speaker for the system. No wires to run, no hassles.

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    1. Re:FM Transmitter + Cheap Radios by computechnica · · Score: 1

      I did this a while back with a 5 watt signal booster and a small antenna on the roof. I can hear it on a FM headset anywhere on my 10 acre property. I also have my office XM reciever hooked to it so I can listen to Opie & Anthony 8^)

    2. Re:FM Transmitter + Cheap Radios by sgifford · · Score: 1

      I did exactly this, and we've been very happy with it. I used a "Whole House FM Transmitter" from:

              http://www.my-radio-station.com/

      and cheap GE radios ("GE 7-2664 AM/FM Portable Radio", about $11 from Amazon). Just took about an hour to set up, and works without any problems through our whole house.

      Now you won't the same sound quality sending your CD out over FM as you would sending it directly to speakers, but to me the sound quality is fine.

  11. Use some common sense? by Evro · · Score: 2

    Put some speakers all over your house, run them to an amp, run a cable from the amp to your PC. What's the problem?

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    rooooar
    1. Re:Use some common sense? by Black+Perl · · Score: 1

      Put some speakers all over your house, run them to an amp, run a cable from the amp to your PC. What's the problem?

      Impedance. Your "solution" will just fry your amp.

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      bp
    2. Re:Use some common sense? by Evro · · Score: 1

      I've done it before, maybe I'm using the wrong term. I used to have a big receiver that all my components plugged into. I added a Y cable and ran it to my PC. Everything worked fine, I had that setup for like 5 years.

      --
      rooooar
    3. Re:Use some common sense? by Black+Perl · · Score: 1

      You split the line-level audio to two different sets of amps (your computer speakers have a built-in amp). That's completely different than splitting speaker-level (amplified) audio to multiple pairs of speakers. It doesn't work the same.

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      bp
  12. Do it the Slashdot Way© by violent.ed · · Score: 1

    Run a box that is streaming the music via an 802.11g wifi router over your local lan, setup as many terminals you need for the appropriate # of speakers, oh and make sure that if you use an external router, make sure it runs on linux. then you could stream local mp3s or stream streams ... or sumthin like that

    This has been a msg from your Linux User Service Example RepresentativeS. LLUSERS for short.

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    1. Re:Do it the Slashdot Way© by TheCabal · · Score: 1

      You can't be a k3wl Slashdotter and use MP3. You have to use OGG, or at least convert the MP3 stream on the fly to another format.

      Using a PERL script.

      Obfuscated.

      On a Beowulf cluster.

  13. 25V audio by BKX · · Score: 5, Informative

    Alright, the WAY TO GO for whole house audio is 25V systems. You just need a 25V audio amplifier (figure like 2W per speaker) and these special speakers which have transformers built into them. You could also go with 70V audio but its more expensive (although easier to find). Don't try to get this stuff new though; you'll pay way to much. Instead, go to business auctions (restaurant auctions are a good place for this) and going out of business sales. You'll get much better deals. Strangely, this stuff is somewhat hard to find on the internet.

    Just so you know, the benefit of 25V (and 70V) audio over standard direct to speaker connections or 3.3V/5V/8V audio signals is less attenuation. 25V and 70V systems can transmit audio signals without degradation over very long distances, like what you would need to wire a whole house or building. The more usual types of audio transmission can only go a few feet.

    The other benefit (perhaps more important) is that you can have as many speakers as you want on the same wires in parallel (as long as your amplifier can handle it). Under ordinary wiring schemes, you can only have one device per output channel. If you split it, either the signal will degrade or the amplifier will overload.

    The only problem with this scheme is that you need completely separate amplifiers and wires for each channel (left and right) if you want stereo output instead of mono. This precludes the usual combining of grounds that most people use.

    If you want to be able to control the volume of each speaker independently just toss a potentiometer between one wire and the transformer on the speaker. Like a 50 Ohm ought to be fine.

    Now, just so every knows, this scheme is only cheap if you find the equipment used. Brand new, this stuff is quite expensive. BUT, this stuff is pretty easy to find used if you look for it.

    If you have no patience, you could try any number of other schemes. I think one of my favorites (I have a friend how actually did this) is to buy a bunch of very crappy computers (think Pentium 200), take them out of the cases and embed them in the walls (he had fans to push the heat into his airducts). Then he attached them via ethernet and multicasted his audio signal to all his crappy machines. All ten of them (he has a HUGE house). The computers are hooked up to vintage stereos which he uses as amplifiers for each room. He controls all this with his laptop and SSH. He usually leaves the stereos on and turned up and turns the sound to each room on and off by sshing into the approriate machine. He recently told me that he's thinking of changing his setup to using one of those network audio protocols, (nas, I think) so that he can have different stuff playing in each room. He also said he was thinking of adding IrDA transcievers to his crap machines so that he can control them with his Palm.

    1. Re:25V audio by Bishop · · Score: 1

      25V is overkill for most homes. Regular speaker level signals driving 8 ohm speakers will be fine in most cases.

    2. Re:25V audio by BKX · · Score: 1

      My thinking was that if he's in a home big enough that he's asking about how to do whole house wiring then his home must be big enough for standard levels to attenuate too much to be nice. That really isn't that far anyway. Maybe 50-100 feet. I suppose the average home isn't as large as I was imagining. Anyway, for normal sized homes you're right, 25V is overkill. Of course, if you do happen to find it at auction, the 25V stuff is usually cheaper than the standard 8 Ohm stuff. But that's usually because you can't find standard 8 Ohm stuff at auction and are forced to use retail.

    3. Re:25V audio by Bishop · · Score: 1

      You are right that the 25v stuff can be cheap. I would not hesitate to use old PA gear. My point was only that it is not required. I didn't want anyone to think that they couldn't use the old hi-fi gear sitting in their (parent's) basement.

      With thicker cable you can run 50, 100, or 200 (with 10 gauge ack!) foot long runs and use 8ohm speakers. You can do longer if you are willing to accept a bit of atenuation. Regardless of the system used there are capacitance issues beyond about 50feet that will atenuate some frequencies more then others. But as the poster was willing to use awfull computer speakers they shouldn't have any issues with old 8ohm gear. Even with the atenuation and odd frequency responce it should sound better then computer speakers.

    4. Re:25V audio by Anonymous Coward · · Score: 0

      25v/70v is not a good solution for home audio. It has very poor fidelity. It passes the speaker level signal through two transformers, greatly reducing the freq. response. In addition, it is not designed to be used in stereo.

      In response to the statement that 25v is overkill and 8ohm is plenty, this is a clear misunderstanding of 25v distributed speaker systems. The reason for using 25v instead of 8ohm is not to overload the amplifier. Using 25v gives the amp a constant load no matter how many speakers are attached to it. Each speaker has a choice of wattage settings, so you just add the all the wattages, and make sure it doesn't exceed the wattage of the amp. In either case this system is designed to be easy to service, easy to add many speakers, and to be used for background music in an office type location. It is not meant to be used to actually listen to music.

      As for the original post - wiring a bunch of jacks in parallel is not the best solution. Get an Audio distribution amplifier. It will allow you to plug in the input, and then have as many outputs as you need(daisy-chain if necessary) Also- you should consider getting a ground loop isolator to put in the output of your computer. It will reduce noise into your house system.

  14. Simple, Cheap Solution by sahrss · · Score: 3, Funny

    Get a big boombox, and CRANK IT UP!

    Tada, whole house audio. Your neighbors will love you because you're installing systems for them, too, and for free!

    1. Re:Simple, Cheap Solution by jonadab · · Score: 1

      > Get a big boombox, and CRANK IT UP! Tada, whole house audio. Your neighbors will love you
      > because you're installing systems for them, too, and for free!

      If that's the effect you're after, make sure you play nothing but polka music.

      Either that or just skip the boombox and get a train whistle and an air compressor.

      --
      Cut that out, or I will ship you to Norilsk in a box.
  15. Umm... by dcapel · · Score: 1

    Buy 6 cheapass stereo systems, and burn 6 cds? :)

    --
    DYWYPI?
  16. It really can be obvious. by adolf · · Score: 4, Informative

    It doesn't have to be difficult.

    The sound card is almost always designed to drive headphones with its "line-level" output. It is, therefore, low-impedance - typically in the several-hundred Ohm range.

    Powered speakers are high-impedance. 47K ohms is common.

    This all conspires to mean that you can drive lots of pairs of cheap self-amplified computer speakers with a single cheap computer sound card, and that it such a topology is even within the design parameters of the gear in question.

    But don't just take my word for it: We'll make some assumptions and pound out a silly example!

    Let's assume we want to drive 16 (!) amplified speaker pairs of 47K ohms each.

    This gives us a load of about 2.8K, which is nowhere near as demanding as the set of headphones that the sound card device is intended to drive. It is also substantially higher than the output impedance of the sound card, and is therefore Just Fine(tm) by the defacto standard methods of interfacing consumer line-level audio devices.

    Sure, it'll be attenuated somewhat compared to driving one set of speakers. It will be measurable. It will be predictable. Is it such a big deal to turn up the volume in compensation? The frequency response will be fine, so what's the big deal?

    This is just line-level audio, folks. It's supposed to be easy, and in this case, it is particularly so.

    1. Re:It really can be obvious. by pulsat3 · · Score: 1

      Yeah but since it is line-level audio and it branched all over his house, the chances of audible interference are almost 100%. I guarantee you'll have a nice hum to go along with the attenuated output. Not to mention the capacitance of driving such a long wire.

    2. Re:It really can be obvious. by OdieWan · · Score: 1

      Figure it at about 20 ft of cable to each room, 8 speakers (!) gives you 160ft of cable. Capacitance will be around 1pf/cm = 30pf/ft (order of magnitude for any reasonable twisted pair), so we'll have around 5nF of capacitance. If the sound card is really a 100 ohm output, this'll give us a -6db frequency of around 1/(2\pi 100ohm 5e-9 farad) = 300khz, about an order of magnitude higher than we care about for audio. I don't think the capacitance is an issue.

    3. Re:It really can be obvious. by marcelmouse · · Score: 1

      Speaking as a self-indulgent experimental musician, with far more than my fair share of running cable for audio installations, I can tell you that your plan for splitting the soundcard out into six long cables running throughout the house will have lots of audio interference. However, you might be able to keep it down to something acceptable (as in, picking up not much more interference than your probably-poorly-shielded soundcard picks up from the rest of your computer) if you use shielded cables, and then place them wisely. The rule of thumb is to never let an audio cable come near an appliance or cross a power cable at right angles. Route your cables in such a way as to avoid coming near stuff that generates an EM field (appliances, your home's wiring, and so on). If you're careful, you can probably get away with running well-shielded cables all over the house, and have pretty damn listenable audio, assuming you're not going to try to impress any audiophiles.

      This very much depends on the quality of your house's wiring. I live in an old house in Portland, so I'd never try this without a powered mixer - my house wiring acts as an antenna with our old solid-state amp, and intermittently picks up CB operators for miles around. It would also fail, for me in my old, poorly-wired house, on cost-effectiveness of the cable I'd buy.

      Furthermore, do you really want all the audio in your house going at once? Buy a powered mixer, and some unpowered speakers, and some really good cable. Or, alternately, buy a soundcard with more RCA outs. "Pro-sumer" PCI audio cards are getting dirt cheap, as all of us non-professional hobbyists with pro tastes in gear are buying Firewire cards when we want 6 ins/6 outs, instead of the PCI cards we would have bought five years ago.

    4. Re:It really can be obvious. by Anonymous Coward · · Score: 0

      Well, it depends. The assuption that you get away with around 6 meters per speaker is more than optimistic. We have speakers in 3 rooms, and have cable-length between 5 meters and 25m meters, in total 50 meters per channel. And an Output impedance from 100 Ohms is very low (way lower then most consumer soundcards would give you...), so in reality your high-frequencies will be some 5 or 6dB down.
      which might be no problem at all, but still, it will be there.

    5. Re:It really can be obvious. by SillySnake · · Score: 1

      Couldn't you just use some sort of op-amp designed to handle signals that fall in the music range.. i.e. 10-30kHz, and use that to create a very high input before attaching it to the powered speaker?

    6. Re:It really can be obvious. by adolf · · Score: 1

      Yes, of course.

      And such an op-amp already exists at the output of the sound card. No need to muddy the waters with extra parts.

  17. one low budget way by unitron · · Score: 2, Interesting
    I'm not sure how big your house is (and how long the connecting cables are going to have to be) or what quality of powered speakers you have in mind, but here's a suggestion:

    Google for Boosteroo. It's a one stereo in, three stereo out preamp/headphone amp that you could stick between your soundcard and your speakers.

    I thought there was a Slashdot article about hacking it a while back but I'm not finding it.

    The reason to need to know how to take it apart is because it runs on a battery or two and you might want to hook up an AC adapter.

    --

    I see even classic Slashdot is now pretty much unusable on dial up anymore.

  18. Try Slim Server by Redfriar · · Score: 1

    Slim devices contributes to a GPL'd Server that is typically used to stream to their SqueezeBox player hardware. But, get this, there are software versions of the Squeeze box, namely 'soft squeeze' that emulate nearly perfectly the hardware features, and in some cases, is more useful. If nothing else, WinAMP can be used as a client as well, and it's playlist can be controlled via Slim Server (though some features are lost).

    Here's some features of Slim Server that make this worth considering for your whole-house idea:

    A. Any cheap PC with a JVM can be a client player
    B. The server can keep multiple players in-sync
    C. All clients can be controlled centrally from the server's web-interface
    D. The server can proxy web-casts/streams to your players
    E. The server allows you to bit-peel/transcode audio for a given client (ideal if you wanted to stream your audio to your office/hotel/etc)
    f. Fairly Robust indexing/browsing.
    G. iTunes integration

    Check it out at:

    Slim Server Download, all platforms

    Soft Squeeze @ Source Forge

  19. Who cares? I mean... by Bin_jammin · · Score: 0, Offtopic

    if you want to do it on the cheap, you're obviously not going to be budgeting a decent set of speakers for each room, so what's the point of pumping a crappy audio signal across your house to worse speakers? I'm not saying a whole house audio project is a bad idea, or that cutting corners is a bad idea, but there comes a point where you have to realize that some things are expensive for a reason. You're not using proprietary hardware or software to do this, it's all generic off-the-shelf hardware and software. If the market hasn't made it cheap enough for you to be able to put this together on your budget, start saving, and do it right the first time when you've got the bankroll big enough.

  20. Go Mono by cgenman · · Score: 3, Interesting


    Get an old, used 4:1 amp on the cheap with a mono output option. Put a speaker in every room. Assuming you have smaller speakers than the manufacturer was expecting to drive, use two speakers per line, for 8 total.

    I wouldn't worry about stereo. When you have music coming from every room, stereo separation gets muddied. Alltogether, the audio is a bit cleaner in mono, if you've got 5 or 6 mono sources from around the house coming at you.

    Another way to do it, if you really want to be cheap, is broadcast. Get a low-powered radio transmitter, pick an unused station, and blast it. Tune the radios in your house, and you're done.

  21. If I were going to do this... by blincoln · · Score: 1

    I'd look for a second- or third-hand 8-bus mixing console. The console would feed four stereo amps (from garage sales, thrift stores, whatever), and the amps would be hooked to four sets of stereo speakers.

    If you look carefully, you can find stereo receivers from the 80s that have two sets of stereo speaker outputs, so you could have eight sets of stereo speakers.

    The console would also be useful because you could have a number of different inputs, and pipe them to different areas of the house. So maybe the living room and basement are getting Skinny Puppy, and the kitchen and garage are getting military scanner traffic from a streaming audio server.

    Everything but the console would be super-cheap. I have a (dual stereo) receiver, four halfway decent speakers, and two crappy speakers that I got from the "free stuff pile" at my old apartment building, for example. I would imagine a 70s or 80s 8-bus console could be had relatively cheaply too, as long as you don't look for a pro studio model in mint condition. Cheaper than the products other people are linking to, at least.

    --
    "...always new atoms but always doing the same dance, remembering what the dance was yesterday." -Richard Feynman
    1. Re:If I were going to do this... by kisielk · · Score: 0, Redundant

      You can pick up mixing consoles for fairly cheap on Cragislist. I've seen older 8 channel Mackie's going for under $100.

    2. Re:If I were going to do this... by blincoln · · Score: 0, Redundant

      8 channel, or 8 bus?

      I will feel very old if an 8-bus Mackie is going for under $100. Then I will buy three of them.

      --
      "...always new atoms but always doing the same dance, remembering what the dance was yesterday." -Richard Feynman
    3. Re:If I were going to do this... by blincoln · · Score: 1

      Dear moderators,

      Learn about the subject of the post before you mod it down.

      Dumbasses.

      - No karma bonus

      --
      "...always new atoms but always doing the same dance, remembering what the dance was yesterday." -Richard Feynman
  22. poor man's solutions by dj_virto · · Score: 5, Informative

    I'm out of my league when slashdotters start suggesting $200 pieces of gear, but I am an enthusiastic cheap hardware hacker and have some suggestions based on stuff I've tried. Please don't comment saying these approaches are ghetto. I know they are ghetto. That doesn't mean they won't have great results for cheap.

    It sounds like you want a system originating from just one source- since you were willing to spit the headphone hack signal so many times. For starters, maybe poke around for a device called a 'video distribution amplifier'. You can buy one for something like $20-$50 bucks in the US that will split one set of signals five or six ways. If you just want to split audio right now, ignore the video. Later, you can use the video to send an (admittedly low quality) image of the computer screen to TVs and video monitors around the house if your video card supports this or if your scrounge up a VGA to composite adapter.

    Watch thrift stores for old receivers from the 70s. I've had great luck with old Panasonic and Technics receivers- they're surprisingly high quality. You can use these receivers two ways- to distribute and/or to receive audio in each room. To distribute, wire the audio signal from your computer into the AUX or TAPE PLAY inputs. The outputs labeled TAPE REC (there might be two sets of these hopefully) can go to another room to input into gear there. My experience has been that you can safely split each of these TAPE PLAY outputs once without noticeable degradation- so you can go to as many as four sets of amplified speakers, or four more amplifiers, or four car stereos from here.

    Since you're hacking, you can also use the headphone jack on your receiver as another output- preferably to amplified speakers which are designed for this sort of signal. Although, be warned, on some equipment the presence of a headphone plug automatically turns off the local speakers if you were planning to use them. By the way, some (maybe 5% of what I've seen) 70's gear prefers 16 ohm speakers- 8 ohm speakers on them will sound a little funny, especially after you blow them out. :)

    The receiver will also have some other inputs too, for your CD player, etc which then can be easily distributed to the whole house. Keep in mind that the old PHONO inputs prefer a different kind of signal from what your computer and CD player puts out.

    As for cabling.. the best cable I've snagged while dumpster diving was some Ma Bell cabled with 16 or so sets of twisted pair, maybe 16 gauge or so. This works beautifully. For very long runs, poke around for the cable ordinarly used for composite video. There are some semi-cheap options on ebay like this, but for stereo you'll need two. People say not to use coax, but I've used it for audio when I've had some excess laying around, and it worked great for me. You can solder standard RCA plugs on the ends and seal. I like to use a bit of clay epoxy because it not only insulates but also protects. :) Rat Shack and others sell 50 foot cables with headphone jacks on both ends. These are nice if you are terminating in an old set of computer-style self powered speakers. I've run three of them in series with no noticeable noise. If you are really hard up, the dollar store sells 100 foot phone cables. Don't bother trying to solder the fabric woven wires in them, use old phone sockets for breakout boxes. For line level signals this works well enough up to a few hundred feet.

    Ok, now let's talk about how to actually play the audio you've very professionally sent to each room. I think the best bet in this kind of setup is the computer-style self powered speakers. They have volume and power switches on them, which is all the control you're going to have in that room anyway (unless you use VNC or some such like I do to control the media server). You can find old computer speakers in thrift stores pretty easily, but they always seem to be missing their power cables. This is where your lifetime spent not throwing away AC-DC power adapters

    1. Re:poor man's solutions by jim_redwagon · · Score: 1

      just wanted to thank you for putting so much time into your post. it's great to see that you enjoy what you did instead of just tossing back a lame (usually derogatory) reply. now I just need to figure out how to take everyone's suggestions and use them in my house (while appeasing the wife's sense of aesthetics, arguably the hardest part).

      --
      I forgot what I wanted to say, but honestly, it was important.
    2. Re:poor man's solutions by Anonymous Coward · · Score: 0

      dude, that's so ghetto.

    3. Re:poor man's solutions by Deagol · · Score: 1
      Great post!

      Regarding cheap cabling... I've used standard CAT-5 for the very unprofessional speaker runs I've had in my home at times. I'd twist the 4 solid-colored wires together for one condutcor and the 4 open wires as my second conductor (the logic being that four 26-guage wires would have better properties than one 26-guage wire). Seemed to be less noisey than the crap I bought at Rat Shack (you can tell I'm no audiphile).

      I don't know how this would hold up to high-end gear. This was for my $200 chain-store 6-speaker, surround, entertainment center, hooked up to my $50 DVD player, playing my 256kbps MP3 collection. Sounded good enough for my ears.

      CAT-5 (which I always have a spool of lying around) is cheap at $50/1000ft. I assume one could go high-end and go with shielded CAT-5, which goes for about four times as much.

    4. Re:poor man's solutions by Stavr0 · · Score: 1
      However you hack it, try using an old computer power supply to power the car stereo. I do mean old- like 486 or older AT style PSUs that will actually power on without a computer around. You might have to wire up the 5volt leads to run a nightlight or something to get some of these to work.. most will simply work. The red wire is 12 volts postivie, black wire is negative... Hook up your scrounged or on-sale 4 ohm speakers to the stereo. Choose the correct input. Mount creatively. (the stereo I mean)

      Orange is 3.3v, red is +5v and yellow is +12v. To get an ATX to power up by itself, jumper pins 14 (green) and 15 (black).

      BTW you can get many other voltages by using such combinations as red,yellow=7v orange,yellow=8.7v white,yellow=17v blue,yellow=24v

    5. Re:poor man's solutions by moonbender · · Score: 1

      I do mean old- like 486 or older AT style PSUs that will actually power on without a computer around.

      FYI: You can easily get ATX power supplies to power on without a computer by shorting the right pins. I think it's green to ground (black), but it's probably better not to take my word on it. Instead, you should trust some random guy who has a web site. ;) Devising a permanent solution isn't hard either, you can also get them from stores. Don't do it without putting some load on the PSU, some people say that it might damage it, although I guess they are on crack. Best not to anger them, though.

      --
      Switch back to Slashdot's D1 system.
  23. Omnifi DMS1 Digital Media Streamer by really? · · Score: 3, Insightful

    Omnifi DMS1 Digital Media Streamers can be had for as little as US$50, and come with both a wired and wireless NIC. Hook them up to some reasonably priced powered speakers, and you can have each room "wired" for less then US$ 75.

    It's what I recently did for a friend, and he is VERY happy. So is his wife.

    --

    "Consistency is contrary to nature, contrary to life. The only completely consistent people are the dead." A. Huxley
    1. Re:Omnifi DMS1 Digital Media Streamer by r00k123 · · Score: 1

      Whoa.

      What'd you do for her?

  24. Distribution Amps by BushCheney08 · · Score: 1

    What you need is an audio distribution amplifier (DA). They do exactly what the name suggests. This looks like it might do the trick, and it uses Cat-5 cable for the (analog) transmission, so you probably already have all the cable you'd need. Not exactly cheap, but they're certainly cheaper than pro-level DAs. Of course, you may want to go the squeezebox/digital route like many others are suggesting.

    --
    Be a real patriot: Question authority. Think for yourself. Formulate your own conclusions.
    1. Re:Distribution Amps by pla · · Score: 1

      What you need is an audio distribution amplifier (DA).

      I agree completely, but the one you link to seems quite a bit more complicated (and expensive) than necessary here - You need the $200 base unit plus a $50 receiver in each room? No way!

      The AudioVox VA100 (not a referrer link, and just search for the model number on Amazon if you don't trust me) does 1 stereo input to 4 stereo outputs, and handles audio separate from video (ie, no need to deal with converting it to RF and back, as with most cheap distribution amps). $50 per eight audio outputs (for the described use, stereo won't add anything to the quality, so might as well use the channels independantly). If the FP poster needs less than 16 rooms, I'd even try splitting each of those outputs once, shouldn't hurt the quality too much with active speakers.

    2. Re:Distribution Amps by Braedley · · Score: 1
      This is the basic premiss I'd work on. This particular model may not be the best for you, but it's the right idea. Some things to look for: It must be powered. Unpowered systems make for serious attenuation and/or fried sound cards. Make sure it splits the signal when it's at the proper level. A preamp splitter placed between an amp and an unpowered speaker will either cause some serious clipping (bad, a major cause of distortion), or blow the splitter (unlikely, but possible). A postamp splitter between the source and an amp isn't as bad, but still not recomended.

      Also, when deciding between pre- and postamp splitters, consider the length of wire you'll need to run. Anything more than 25ft, 50 at max (7.5m, 15m) and you'll want (read: need) preamp in order to avoid distortion and noise (for those of you who say you can run 150ft of powered cable, I say you're right. I've done it before, but never for a residential application). Less than that 25ft, it's up to you.

  25. 70v System by sysiphus474 · · Score: 0

    Got 70v sound system here in the house, running an old Sansui reciever someone was tossing out. I've seen really cheap systems using a car CD player!

    Step up the output of each channel with a 70v XFMR, and run your lines. Run 'em thru a potentiometer(volume control, read up on linear v. audio pots), and then step them down with one XFMR per channel per room. XFMR taps to speakers. figure about $20 per to step up a channel, $20-50 for volume control, $5 per channel per room to step it down.

    You will still get what you pay for with amp & speakers!

  26. capacitance to what? by Oo.et.oO · · Score: 1

    that's why he's talking about sheilded wire. but yeah, the loss over long runs will be way to big to have any quality or amplitude left over at the speaker end, even if you do crank the knob

  27. PCI MAX 2004 OR PCI MAX 2005 by ClioCJS · · Score: 1
    These are PCI cards you can put into your computer. Broadcast on FM. Card costs 170 dollars if you get it at this christmas website, and 170 euros if you buy it from Europe (biiiig price difference,that's like $260).

    A GOOD transmission antenna will run you another $90 or so. I haven't gotten mine yet, so I can only make it across my house in mono.

    Still, it's more elegant than my 100-ft RCA-cable run, and has better reception quality AND range than my crappy X10 "mp3anywhere" 2.5gHZ transmitter.

    --
    -Clio
    Karma: Bad (mostly from not giving a fuck)
    Blog: http://clintjcl.wordpress.com
  28. It's all about the impedance by gothzilla · · Score: 2, Interesting

    Speakers, whether powered or not, have an impedance that must be watched if you're going to hook up more than two to each channel.
    Put two 8 ohm speakers in series you get 16 ohms of impedance. This won't fry your sound card but the volume in the speakers will be lower.
    Put two 8 ohm speakers in parallel and your impedance becomes 4 ohms. Volume stays the same but you risk burning your soundcard.
    Put 6 speakers in parallel and you start a fire.
    The best thing to do is put 4 speakers in series/parallel. Split the channel into two lines and put two speakers in series on each line. This keeps the impedance at 8 ohms and gives you 4 speakers.

    Of course, the suggestion below to just buy an FM transmitter is the best one yet. You can buy tiny FM radios to plug into powered speakers if you really want the powered speakers, or just use boom boxes instead.

    1. Re:It's all about the impedance by smithmc · · Score: 1

        Speakers, whether powered or not, have an impedance that must be watched if you're going to hook up more than two to each channel.

      Uh, no. Yes, a powered speaker has an impedance, but it's going to be at least 10Kohms. Any audio output can drive such a load; that's how line-level audio is designed - low output impedance, high input impedance. Actual direct driving of speaker drivers by a power amplifier is an entirely different matter.

      --
      Downmodding is the refuge of the weak. Don't downmod, make a better argument!
    2. Re:It's all about the impedance by unitron · · Score: 1
      "Speakers, whether powered or not, have an impedance that must be watched if you're going to hook up more than two to each channel.
      Put two 8 ohm speakers in series you get 16 ohms of impedance."

      The phrase "powered speakers" implies a speaker-amplifier combination. The manufacturer has already dealt with the amplifier output and speaker voice coil impedence matching issue. The input of a powered speaker isn't a speaker's input, it's an amplifier's input. Amplifier inputs fall into that nebulous mid to high impedence area known as "line level".

      --

      I see even classic Slashdot is now pretty much unusable on dial up anymore.

  29. wireless SPDIF by David_Bloom · · Score: 1
    There have been several reports of people who have successfully gotten SPDIF (the digital audio signal normally used between a DVD player and an audio receiver) to work wirelessly by simply plugging the normal SPDIF RCA cord into the video input of an ordinary cheap wireless video transmitter (buy one transmitter, more than one receiver). Your soundcard probably already has PCM SPDIF output. If it doesn't, you can get a nice one that has it for cheap.

    The only problem is finding a cheap way to get to analog from the SPDIF. If you were planning on using traditional speakers powered by a receiver, just make sure the receiver can take an SPDIF input. Otherwise, you'll have to get creative—nobody actually makes a cheap SPDIF-->analog converter because there's not much demand. You may be able to find a minidisc player/recorder that can monitor its optical input on its analog line outputs. Look around on ebay :)

    The benefits of this system are that you don't have to run cords, it is entirely digital (no quality loss), and, because of the nature of an SPDIF signal, the sound will still be exactly "in sync" throughout the house (one room's audio won't be a few seconds behind another or anything).

    --

    Karma: Excellent (fuck, even in the future moderation doesn't work!)
    1. Re:wireless SPDIF by paranode · · Score: 1

      Wow, it's so simple yet so cunning! It makes sense too. Digital signals are more resistant to interference so I'm sure a transmitter designed for a video signal could carry it fine. I think I might just have to try this.

  30. Build your own Squeezebox by LordMyren · · Score: 1

    You can build your own squeezebox-alike cheap as nuts. Its a hack, but its cool. Get an OpenWRT box with a USB output and hook up a USB sound card. Cost should come in under $120. You can also get a ATI Remote Wonder for RF remote control. You should only need one or two recievers for the whole house, and you can sometimes buy the reciever & the remotes seperately on ebay. For now I leave sync issues as DIY. More some day.

    -Myren

    1. Re:Build your own Squeezebox by grahamdrew · · Score: 2, Informative

      I'm a big fan of the Apple AirPort Express at $129. It'll stream audio over 802.11g or ethernet, will do standard 3.5 or optical minijack out. Granted, you have to use iTunes to stream to it and it may or may not be what you're looking for in terms of having to stream to a specific unit, but it's an option. As an added bonus, it's can act as a wireless router or print server. I don't know how it's feature set compared to the SqueezeBox everybody keeps mentioning, but it's really a top-notch piece of off-the-shelf hardware for about half the price. May or may not work for you, but I like it. Andrew Beard

      --
      // Dumps core here
  31. Comment removed by account_deleted · · Score: 1, Funny

    Comment removed based on user account deletion

  32. wired transmitter and not too Cheap Radios by twitter · · Score: 1
    I did this a while back with a 5 watt signal booster and a small antenna on the roof.

    Soldering a longer antenna onto my tunecast 2 from Walmart made it cover most of my four bedroom house.

    My radios are not cheap, though. You can get some very good tuners at thrift stores. Any digital tuner is good, though not expensive. Really cheap analog receivers are terrible and should be avoided. My wife's favorite little boom box, which she uses for CDs, does not work on FM at all anymore.

    If you are really poor, you only have one room, so I'm not sure what the problem is.

    --

    Friends don't help friends install M$ junk.

  33. Gettoblaster, big (as in: luxury and really big) by Qbertino · · Score: 1

    My only home Audio solution for the last 10 years has been a top-line Panasonic Gettoblaster (RX DT 75). Dual-Tape (fast dub), CD, Radio, Time/Timer (for *everything*, incl. timed radio recording, timed wake-up+playback or wake-up+record from stand-by, etc...).
    And *everything* is remote controlled with a full-blow 40-button remote- my last main buying point.
    On top of that all CD drawers, display covers and tape deck slots are power driven and remote controllable.

    The audio quality is great and even beats (no pun intended) installed audio, since you can - and this is the whole point - move the thing where ever you want in (or out of) the house in under 60 seconds and set it up facing the space whereever you are, giving you clear, unmuddied stereo. The three-way speakers are of good quality and tuned for standing-low-in-a-little-box performance.

    One of the greates things about this solution is that - beside the power cord - you have zero cabelage. The one I have does have full-blow cinch audio in,out and through connectivity though, so I can hook it to an amp whenever needed.

    There is but one downside: The thing (see picture) is ugly as hell. It's even so ugly, it actually is cool again. Anyway, despite it's sheer size for a gettoblaster (you don't want to carry this around with you for longer than 5 minutes) it is notably unobstrusive as a movable home stereo solution. And for that even a cheap one.

    When my current one tanks I'll get something simular with a iPod dock as it's core component. Apple has some nice third party gettoblaster-ipod extensions on their site - you might want to consider that todays equivalent of a luxury gettoblaster.

    My 2 cents.

    --
    We suffer more in our imagination than in reality. - Seneca
  34. Balanced signals.. by mengel · · Score: 1

    Do what real audio engineers do, run balanced signal lines. You can buy really good, pre-packaged "balun" transformers for $30 bucks/line or so, or you can by cheap isolation transformers and adaptors at RadioShack or such like, and build your own for cheap. With something like this; You should be able to run balanced audio for both the left and right channels on a cat-5 line, and build some boxes with cat-5 jacks, a cheap isolation transformers, and a stereo audio jack, and daisy chain as many speaker boxes together as you'd like. Hook the driver box to your computer, and hook an amplified speaker to each other one.

    --
    - "History shows again and again how nature points out the folly of men" -- Blue Oyster Cult, 'Godzilla'
  35. My whole-house audio system by Black+Perl · · Score: 2, Informative

    I see that answers are all over the map. You may want to be more specific in terms of budget, and what you will accept for audio.

    In my case, I wanted a system that didn't require large cash outlay (i.e. no large multichannel amps). I wanted one that I could grow piecemeal and buy things a bit at a time on a shoestring budget, yet they would work as an integrated whole. But I wanted true stereo in each room, from real in-ceiling speakers (FM radios don't cut it).

    The solution I settled on is A-Bus. A-Bus is a music-over-Cat5 technology with You wire a single Cat5 (much easier to fish through walls than speaker cables) from a hub near your music source to each room. The hub is less than $100. In each room, you put an amplified volume control (less than $50 - see e.g. http://www.basshome.com/product_8464_detailed.htm - you can also get one that can pass IR to your audio source) and wire from that to your speakers, which is usually a fairly short run.

    Works well, sounds great, looks like a high-end system, and not too much cash outlay at any given time.

    --
    bp
  36. My two cents (or four) by Tux2000 · · Score: 1

    One line output driving a bundle of line inputs: works, but not good (impedance problems, ground loops unless you use symmetrical inputs, cables and output)

    One amplifier output driving a bundle of speakers: too many speakers kill the amplifier (impedance goes too low), lots of loss on long cables. Driving a 4 ohm speaker via a long, thin cable having 2 ohm per wire uses half of the power to heat the cable.

    The standard technique for distributing audio to a bunch of speakers is to use 100 volts (I don't know about USA, I've read another comment about 25 volts, which seems to be the same trick on an idiot-proof voltage level). Nearly all super markets that I know use 100 V sound distribution for the background music and anouncements. The power amplifier drives the line with 100 volts at maximum output (usually using an output transformer), each speaker has a transformer that matches 100 volts to the power and impedance of the speaker. This sounds like a hifi enthusiasts nightmare, but it sounds pretty good when done right. There are several benefits: You can not kill a 100 V / 10 W speaker with a 100 V / 1000 W amplifier at full power, it will simply emit 10 W. (But a 100 V / 10 W amplifier will be killed by a 100 V / 1000 W speaker.) The high voltage makes wire resistance nearly irrelevant, you can wire 100 V sound as you would wire light bulbs. You can even use the same switches. Most speaker transformers have several inputs, allowing you to reduce the volume by switching to another input. There are also wall-mount potentiometers to adjust the volume, but they trade volume for heat. The main disadvantage is pretty obvious: You need one transformer per channel in or behind your amplifier, and one transformer per speaker. You can add the transformers to common hifi equipment, but there are also professional amplifiers with build-in transformers, usually rack mounted, and professional wall-mounted or ceiling-mounted speakers with transformers. At least the latter will kill your budget.

    If your house does not have much metal inside the walls, i.e. if you can use one set of wireless speakers even through several walls, you could buy several identical sets, one set for each room. Set up all receivers (speakers) to "listen" to the same transmitter, connected to your PC. No cables (except for the speaker's power line), no impedance trouble, but depending on the quality of the sets, you may have some RF interferences (especially with a mobile phone nearby).

    There are power line audio distribution systems (Devolo is very popular in Germany). You run a wire from your PC to a wall brick, that modulates your audio signal onto a HF carrier, and injects it into your power line. Other wall bricks in other rooms filter the HF carrier from your power line and demodulate the audio signal. Another wire runs from the brick to some amplified speakers. Like before, no cables, no impedance trouble. No RF interfaces, but the Develo bricks may kill your budget.

    Tux2000

    --
    Denken hilft.
  37. The $29.95 solution if you build it yourself by greyfeld · · Score: 1
    http://www.dckits.com/stcast.htm



    Look at the one at the bottom for hooking directly to your soundcard.

    Or look at this one at Amazon

    http://www.amazon.com/gp/product/B0007ODOMA/102-27 68592-7307354?v=glance&n=172282&v=glance

  38. IANABAE, but.. by Vorondil28 · · Score: 1

    IANABAE (I Am Not A Bose Audio Engineer), but I suggest getting one good set of speakers, find an a/c vent in a central location in the house, and mount them to the vent grill. Turn the volume up until you can hear your music well in every room, then equalize the volumes by opening/closing the vent in each room. Quick and cheap!

    What's that? Quality?
    Well, I'm not sure about you, but my a/c ducts are all tuned. They sound better than the speakers by themselves!

    --
    This sig rocks the casbah.
    1. Re:IANABAE, but.. by Jah-Wren+Ryel · · Score: 1

      IANABAE (I Am Not A Bose Audio Engineer),

      Actually, your proposal should yield better quality sound than most BOSE speaker systems. What you left off is that special BOSE touch - i.e. it needs to cost 10x more than it is worth.

      --
      When information is power, privacy is freedom.
  39. Linksys NSLU2 by richardoz · · Score: 1

    There are some people having success with using the Linksys NSLU2 and Unslung as an audio player.
    http://www.nslu2-linux.org/wiki/HowTo/SlugAsAudioP layer/
    http://www.amazon.com/gp/product/B0001FSCZO/

    --
    All the worlds indeed a .sig, and we are mearly players..
  40. A big fat old stereo with linear power amp by NateTech · · Score: 1

    Just do it the old fashioned way.

    Go to a local second-hand stereo store. Buy a big huge heavy stereo with a Tape input (line level) and a big linear amp. Feed the PC into that.

    Some old stereos have up to four "zones" of stereo speaker outputs. Buy a speaker switchbox or make one from a bunch of good quality switches. Be nice to your amp and don't switch things in and out when it's on... turn it all the way down or off and switch in the zones you want music in. (Takes a whole 5 seconds.)

    Run speaker cables around the house and hook up good quality speakers whereever you want tunes. You can buy some nice stuff at that same second-hand store, probably -- or on eBay. Hunt around for old "audiophile" gear that's completely lost its monetary value (and looks old too, for that "retro" look), and you'll get great gear for next to nothing.

    Don't buy fancy "monster" cable... just get a nice solid large gauge wire. Spend a weekend running cables through walls, under floors, etc.

    Save some money and do it the way everyone did in the 70's! You'll be able to absolutely blow your house away with sound that sounds good for only a couple hundred bucks.

    --
    +++OK ATH
  41. I think... by TBone · · Score: 1

    ...you missed the "poor man's" part of the question.

    The guy wants to buy some wire and speaker terminals, not a centrallized full-house entertainment system, which I'm sure Google returns hundreds of. He wants to know the best way of going about this without installing a prefissional sound system.

    --

    This space for rent. Call 1-800-STEAK4U

    1. Re:I think... by BKX · · Score: 1

      I didn't miss the "poor man's" part; you just missed one of points. 25V audio can be the cheapest stuff money can buy if you look in the right place. I picked up two 25W 25V amps and 16 speakers at auction last year for $100. Try getting audio distribution equipment of ANY kind for cheaper than that.

  42. thanks for the correction by dj_virto · · Score: 1

    I couldn't remember the colors. :) I'm going to try that combination voltage mixing trick. -p