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With all of the interest in my cassette boombox audio mod I decided to write up a complementary tutorial - reusing computer speakers. Modifying a boombox for an audio input is great for portable applications, but reusing a pair of computer speakers is more suitable for more permanent installations and cases where you need some physical separation between the left and right channels.

Used powered computer speakers are extremely inexpensive. They’re generally sold at yard sales and thrift stores for $5 or less, including their “wall-wart” power supplies. These speakers generally have permanent audio input cables with a 3.5 mm stereo (mini) plug which plugs into your computer’s line out port (typically color coded lime green).

These aren’t fantastic state-of-the-art speakers you’d want to use for a high end home theater system, but they’re decent, and certainly worth the price. Occasionally I’ll come across computer speakers with a subwoofer (a large speaker designed to replicate bass sounds) very inexpensively too. They’re called 2.1 (pronounced two dot one) because they have two main speakers plus one subwoofer.

There are many ways computers speakers can be reused – add stereo speakers to a DVD player, inexpensive amplified speakers for an MP3 player, a high quality speakerphone for your cell phone, and to add surround speakers to your computer to name just a few possibilities. Basically any piece of electronics with a standard 3.5 mm (mini) audio output jack can be used.

Step 1: How to hook up a DVD player

You can use a pair of speakers and an inexpensive adapter cable to upgrade your home video setup from mono to stereo.

Almost all DVD players, Blu-Ray players, and stereo VCRs have a trio of color-coded output jacks. They’re typically colored yellow, white, and red and correspond to Video, Left audio, and Right audio. The good news is different hardware and cable manufacturers all use the same color coding scheme. (It was much more challenging to hook up early VCRs and audio equipment before color coded standards became popular.) Red is also used on red/green/blue colored cables for component cable setups and yellow is also often used for digital audio (SPDIF) so you’ve got to be careful not to confuse them. Other than that all you have to do is match colors to avoid confusion when hooking up cables.

An inexpensive Y-adapter cable with white and red RCA plugs on one side and a female 3.5 mm stereo plug on the other end is all you need to hook up most computer speakers to your DVD or Blu-Ray player or stereo VCR.

Some mini stereo plugs and jacks are color coded lime green, but this isn’t always the case. In most cases, including most adapter cables, the 3.5 mm plug is the same color as the cable (beige, black, and white are common).

In a typical setup your TV set is hooked up to the DVD player with either a direct cable from the DVD’s video out to the TV’s video in jack or through an R-F modulator to the television’s antenna jack. If a mono TV has input jacks they will be color coded yellow (video) and audio (white).

If the red and white audio out jacks on your DVD player are not in use then hook up the Y-adapter cable and plug in the speakers. Presto, you’ve got the equivalent of a stereo TV and added a new dimension of experience to your DVD watching enjoyment.
<p> Philip, </p><p>I need your help. I want to add wire to my existing mini stereo speakers so I can put them on top of the entertainment center instead of right next to the stereo amp. I have speaker wire and I have 22-16 butt splice pieces. I will have to strip the wires at both ends, insert into butt splice and really crimp them hard to get them to stay in there nice and solid. My question is what do I use to make a good solid crimp. Wire strippers or something else. When they are attached to the stereo they just go thru a hole and close the pin and they are attached.</p><p>I would appreciate your help on this because I don't want to mess up the butt splices. </p><p>Thank you in advance for any help you could give me.</p><p>Glenda</p>
<p>OK thanks for the demos. BUT your link to <a href="http://www.neatinformation.com/howto/reusing%20speakers.html" rel="nofollow">http://www.neatinformation.com/howto/reusing%20speakers.html</a> is no longer working. Please either update or take it down.</p>
<p>I don't get this. It's like an instructable on spoons and how to eat soup or ice cream with them.</p>
<p>Maybe for you, but not for others. I've shown many friends how to use used computer speakers to add stereo to a DVD player, a speakerphone for a smartphone, etc. and they've all appreciated the information instead of making a snide comment about teaching them how to use a spoon.</p><p>Also, an extremely high-tech gamer friend was astonished when I suggested that he add a pair of speakers to his computer for surround sound - it just never occurred to him!</p>
<p>To me it's really pushing the limits of spam,trying to get everyone here,and also anyone who may link to here,to redirect them to neatinfo for web traffic revenue.</p>
Great instructables, I've picked some really cheap and great speakers on goodwill stores and yard sales. <br>As a tip: some old compaq speakers (around 95 to 99) have JBL 4ohm drives on them. <br>Im actually building a hi-fi stereo amplifier using 2 brideged Tda40 IC's for running 6 of these speakers. <br>
I totally agree with you -- used pc speakers are the best buy out there for low-cost audio, and I've picked them up used for as little as $5. Not only do I used them on my computers, but on a dedicated internet radio, an mp3 player, and for the audio on a talking robot head that I built. They can also be disguised, as in an instructable I did some time ago: <br><br>http://www.instructables.com/id/Vintage-Speaker-Cabinet/<br><br>Nice job on the instructable!
Thanks. I see them all the time at $5 - and at this point I think that it's too much(!). I've got about three spare pairs of speakers in my workroom ready for projects, so I only pick up additional ones if they're $3 or less unless they're extremely decent ones.<br><br>I did pay $4 for the 2.1 subwoofer + 2 speakers I mentioned in the instructable, but only because it had the subwoofer and had two sets of inputs.<br>

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Bio: Writer, engineer, techie. I've been using computers since the original Apple II in 1978 and have always been interested in technical topics. Check out ... More »
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