T-Amps (Look, Ma, no tubes)

[EWBrown]

The little $30 "Sonic Impact" T-Amp from Parts Express has always interested me, so I recently took the plunge and got one. Now, of course, I can't leave "well enough" alone... It just cries out for mods and upgrades... Even Parts Express recently did a "speaker project" using one of thesein a rather disembowelled condition,and built into a "boom box" with some semi-decent speakers and a 12V gell cell.

Not bad for something which costs less than a small Hammond Power Trannie...

http://www.churchmedia.net/CMN/audio/10 ... oject.html


http://www.diyaudio.com/forums/showthre ... perpage=10

As it is, it sounds pretty decent, especially for the price... It'll never rate as the "prime" power amp, but for playing MP3s, I-pods, computer audio, XM radio, etc, it's hard to beat. Should be perfect for that backyard / outdoor sound system... One of them and a portable XM radio should be a great "killer app"...

So far I haven't hacket the thing apart, but with some improvements loke a better volume pot, power switch, power connector (and use bigger batteries or a 12-14VDC regulated power supply) and better input coupling caps, it should iimprove markedly.

PE has a "fancied up" version in a snazzy aluminum case, and better support components, and accesories including a 12VDC switcher PSU. for an additional $110. But then, that takes all the DIY fun out of it... Yellow_Light_Colorz_PDT_11

/ed B in NH

[ashok]

I used to own the Charlize TA2020 amp for a while. http://diyparadise.com/charlize.html. Nice little amp that I operated with a 12V Lead Acid battery. Here is a picture.



The amp is on the left. In the center is the lead acid battery with a DPDT switch to connect the battery to the amp, or to the charger.

To the right is a D/A converter, also powered from the same battery.

Ashok