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Old 3rd May 2007, 05:41 PM   #1
M3G4 is offline M3G4  United Kingdom
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Join Date: Jul 2006
Default iPod station... car speakers?

Hey all,

I was thinking about making an iPod station - basically a little stereo speaker system that can deliver loud clear sounds in a small enclosure.

My idea was a Sonic T amp (or such like, if anyone's got any idea of better alternatives) powering a pair of 4"/10cm Coaxial car drivers - typically 4Ohm, and sensitivity of something like 93db.

Would this work? Any ideas you can input? I'm not looking for desperately good quality - just something where you can hear the music and it goes loud!
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Old 7th May 2007, 10:05 PM   #2
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Join Date: Feb 2006
Location: Chicago, IL
Oh, yeah, that'll work just fine.

I've been working on mine for about a year, but it's turned into a kind of sick obsession. There's lots of info in the class D forums about this kind of project, although most of the really relevant ones haven't been active for a month or two. Here's one:

mini boom box

Somewhere on one of them is a picture of one somebody made with some cheap computer speakers and a roll or two of duct tape. Hilarious. V-Bro has a really cool one out of clear plex. Mine's got an updated WWII Signal Corps aesthetic. Search around and you'll find lots of stuff.

Check out also the t-amp mods thread and do the basic upgrades: new input caps, better volume control, new reservoir caps. MUCH better sound. Not real easy soldering, but not brain surgery, either.

Figure out what you want to do about power. The T-Amp switching PS isn't bad. Cheaper, more powerful supplies are available oneBay, hiding in the guise of LCD Monitor supplies. 13.5v is pretty much the max (W/ heat sink on the Tripath chip). If you want it to be portable. lead acid or Lithiums can work, either requires specialized charger.

All in all, really fun project. You might just append your posts to one of the threads in Class D. It may be getting lost over here in "Else." Best of luck.

--Buckapound
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