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I use the oh-so-popular Sonic Impact Class T amplifier for a variety of applications, such as my wearable stereo (Expect another instructable soon), and bicycle stereo (and another one here too). I can probably say however, that the one problem with the almighty T amp is that on 8 fresh AA's, it only lasts maybe an hour... And with a pack of 8 AA's costing over $5.00 USD, that cost will tear you apart. This is an economical solution to a lack of power for 12V devices drawing up to 2Amps, not just the T-Amp.
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Signing UpStep 1Materials
This project requires alot of materials, but some can be substituted or ignored... You don't need everything I used...
You Will Need:
1.Hammer
2.Thin nails (exact size doesn't matter)
3.Wood (type doesn't matter)
4.Two 6V lantern batteries of the brand you are going to use. I use DORCY batteries from dollar general, because they are $2 each. Even for 2, they are cheaper than AA's.
5.Tin foil
6.Speaker Wire (or just wire... anything over 24 AWG should work)
7.Soldering iron/gun. I used 30W I'd use 20 or above for this.
8.Solder. I used kester 2% silver solder, anything should work because it's just power, not signal.
9.Drill
10. Wood Screws, the thinner the better.
11. Scissors.
12. Saw.
13. Fluff to make it look cool, and or add functionality, like maybe an on led. I used quick connects for the power output and an on/off switch, plus a cigarette lighter adapter. Go wild.
You Will Need:
1.Hammer
2.Thin nails (exact size doesn't matter)
3.Wood (type doesn't matter)
4.Two 6V lantern batteries of the brand you are going to use. I use DORCY batteries from dollar general, because they are $2 each. Even for 2, they are cheaper than AA's.
5.Tin foil
6.Speaker Wire (or just wire... anything over 24 AWG should work)
7.Soldering iron/gun. I used 30W I'd use 20 or above for this.
8.Solder. I used kester 2% silver solder, anything should work because it's just power, not signal.
9.Drill
10. Wood Screws, the thinner the better.
11. Scissors.
12. Saw.
13. Fluff to make it look cool, and or add functionality, like maybe an on led. I used quick connects for the power output and an on/off switch, plus a cigarette lighter adapter. Go wild.
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i've been using t-amps for a while. AAs is not the way to go. they don't provide enough current. you'll notice right away that your bass sounds louder with a better battery. you can get a cheap 12v lead acid battery like one of these, and they are easy to charge, but they're heavy. http://www.batterystuff.com/batteries/electronic-security/#260
i use this lithium ion battery, and i highly recommend it. it comes with the right charger for it and the right DC jack for the t-amp. it's small and light, but you can power the t-amp at full volume for hours. http://www.pinecomputer.com/12v3nirebapa.html
also, i would take apart the t-amp casing and slap a cheap aluminum heat sink on the t-amp chip. it cuts out occasionally at extended high-volume unless you disperse the heat, but it can really pump out it's max with the heatsink.
here's mine. http://pics.livejournal.com/potentialtoburn/pic/0005f70r/g9 and http://pics.livejournal.com/potentialtoburn/pic/0005ghz4/g9
here's my now box. http://notetoself.net/2007/08/07/chopper-groove/