Ok, further on the project: I found an old enclosure which can accommodate the amp board, heat sink, power transformer rectifier and filter capacitors… the trafo is a 32-0-32 250VA... searches seem to suggest this is the absolute upper limit for TDA7293 setup. The heat sink I have, also...

Have a look at these populated boards.               Cheers!

Just received the double sided, 1.6 mm thick prototype PCBs... looking nice, very few components to sort out and to populate the board, maybe in less than 20 minutes           Cheers!

Hi all,   As part of my home theater build, have decided to go for 3 way actives for front LCR… so, need to build 9 power amps for fronts and 8 amps for surrounds… to pair up with my Sherbourn PT-7020A pre/pro.   I needed something as easy, but more powerful. This is when I and my friend...

Hi all,   I have a couple of 32-0-32 volts @ 4 Amp trafos lying around at home.   So I thought of building an amp which can use them. Any schematics for something like this? I haven't searched on the net, maybe there are some amps out there. In terms of audio quality, the most important...

Actually 40mv dc offset isn’t that bad. I traced it to a slightly leaky cap. Replaced it and now it reads 1.5mv on right channel and 2.8mv on left channel, in 200mv range of multi meter. My Dc offset is excellent and will not damage the speakers, but many say as high as 50mv is still OK. I...

Hi friends, Sorry for the long gap in my post as I was preoccupied with other commitments. In continuation to my earlier posts, here is progress in amp build. Checking the DC rail voltages: Left channel, Right channel, both channels IMG_4645 by hydrovac, on Flickr IMG_4646 by...

300 watt Hi-fi power amp project. Hi all DIYers, Building a 300 watt Hi-fi power amp, which we designed and prototyped few years ago. Please follow the links for details. http://www.diyaudio.com/forums/solid-state/10387-310w-power-amplifier.html...