Aleph 3/30

macka

Member
2001-12-15 3:07 am
Australia
Tomasz,

The hexfets need matching, see the passdiy.com site (A75 article), its atcually quite easy and the fun part of the project.

Your transformer should be fine for a stereo pair.

For the heatsink aim for heatsinks with 0.33 degrees C per watt or lower for a 30 degree C rise above ambient (assuming 100 watts disipation per channel). ie 1 per channel

If you can't get this low try for (2) 0.6 degrees C per channel.

Look luck with your project, the results are very worth while!

regards

macka
 

macka

Member
2001-12-15 3:07 am
Australia
Tomasz,

The hexfets need matching, see the passdiy.com site (A75 article), its atcually quite easy and the fun part of the project.

Your transformer should be fine for a stereo pair.

For the heatsink aim for heatsinks with 0.33 degrees C per watt or lower for a 30 degree C rise above ambient (assuming 100 watts disipation per channel). ie 1 per channel

If you can't get this low try for (2) 0.6 degrees C per channel.

Good luck with your project, the results are very worth while!

regards

macka
 
I finished the A3O ( Volksamp modification). It sounds terribly.So I changed the values to A3. It is somenthing different, much, much better. Doing experiments I removed couplig capacitor ( to current source), turning this amp to SE. I think it is the best I have heared form this amp. Except bass tones. Hi.