Portable MP3 Speaker build? - AVS Forum
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post #1 of 5 Old 07-21-2012, 10:04 AM - Thread Starter
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Any recommendations for a portable speaker system, DIY build, for an mp3 player?

I thought I saw one before with the Lepai amp that could be plugged in or with batteries, but I scoured this site and parts express and couldn't find it.
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post #2 of 5 Old 07-21-2012, 11:18 AM
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The Overnight Sensations?

Small enough to carry around with a Lepai amp and you're rocking.
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post #3 of 5 Old 07-21-2012, 11:58 AM
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http://www.parts-express.com/projectshowcase/indexn.cfm?project=Podzuma


You really can just take any pair of compact speakers (like the overnight sensations mentioned), and a battery powered t-amp, build an enclosure for the amp that bridges the pair of speakers together.
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post #4 of 5 Old 07-21-2012, 01:57 PM - Thread Starter
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Quote:
Originally Posted by Jay1 View Post

http://www.parts-express.com/projectshowcase/indexn.cfm?project=Podzuma
You really can just take any pair of compact speakers (like the overnight sensations mentioned), and a battery powered t-amp, build an enclosure for the amp that bridges the pair of speakers together.

Ah yes, the Podzuma. Thanks for the link.

I think I'll do what you guys suggested.. just stick a couple of speakers together with a lepai and call it a day.

I do have these old Cambridge soundworks cubes that were part of a really good 2.1 setup. The cubes work but the amp+sub is long gone. Maybe I'll just build a little sub and add the cubes into the box.
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post #5 of 5 Old 07-24-2012, 11:56 AM
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If you don't want to use really heavy deep cycle lead acid batteries, (lithium-ion and lithium-polymer) batteries are expensive and also DANGEROUS unless they have the correct charger and you know what your doing.

Maybe just get this:

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-380

It's the Dayton Audio DTA-1 Class T Digital AC/DC Mini Amplifier 15 WPC
And runs on 8x AA batteries or can be AC powered as well. I would use 8x nimh rechargable batteries in there.
I like the Sanyo Enloop ones the most for high drain applications.

Speakers I'd suggest 2 of these for it: http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-010
Dayton Audio PA130-8 5" Full Range PA Driver
Nice and efficient at 90db at 1w/1m, so would get nice and loud with not much power.
And they go from 90hz-15khz.

If you want extra sparkle a pair of piezo tweeters with a 3 watt(or higher) 10 ohm resistor on the positive terminal side of the tweeter which tones down some of the harshness and stops the amp from osscilating. Also as the frequency rises, the impedance continues to drop on a piezo so can damage the amp if it drops too low.

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=270-011

Goldwood GT-1005 Wide Dispersion Piezo Tweeter
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