PCB for Aleph 3/30
Hello everybody !!!
Can anybody send me a project of PCB board for
Aleph 3 or 30.
e-mail: tomasz.rodak@energo-inwest.com.pl
Thanks in advance !
Hello everybody !!!
Can anybody send me a project of PCB board for
Aleph 3 or 30.
e-mail: tomasz.rodak@energo-inwest.com.pl
Thanks in advance !
I have problems with finding resistors 0,47 ohm 3W for Aleph 30.
Can I replace them with 2W metal film or wire wound?
Can I replace them with 2W metal film or wire wound?
The higgher wattage the better. I recomend to use more low power resistor ( not dona in my PCB) - you can easily set suitable resistance ( unless zou can match the mosfets). koy
Hello everybody !!!
I have been building Aleph 30 power amplifier.
Could you tell me wheather I can use unmatched MOSFET's in it
and wheather I can use 500 VA 2x18 V transformer.
What should be heatsinks thermal resistance ?
Tomek
I have been building Aleph 30 power amplifier.
Could you tell me wheather I can use unmatched MOSFET's in it
and wheather I can use 500 VA 2x18 V transformer.
What should be heatsinks thermal resistance ?
Tomek
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
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
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
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.
Thank you Koy for your suggestions.
I think I'll carry out some experiments and choose the
best solution for me. 🙄
Tomek
I think I'll carry out some experiments and choose the
best solution for me. 🙄
Tomek
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