I have this old PCB, and I can draw pcb again, it's smal and simple pcb anyway. This amp was replaced with new http://www.diyaudio.com/forums/solid-state/162494-amplifier-motherboard.html post #4, but this is very good sounding amp.apex,
i follow all your model
specialy darlington output
regards
Regards
Last edited:
NPN in TO126 case... MJE340...apex,
bd139
any replacement
Heatsink is to smal, but use extra fan and will work. BD139 must be on heatsink with TIPs,miles,
is my heat sink small or this is fine for my a100 with darlington output
Regards
Valuable of this amplifier is that you can get high performance amplifier with available parts. Heatsink is OK for full power, what is rail voltage on your amp? There is no fancy look, but high-end sounding amp for sure.apex,
another good sounding amp
tnx to apex,
see bigger heat sink
Regards
Last edited:
I can't see is there zobel network on output?apex,
another good sounding amp
tnx to apex,
see bigger heat sink
I can't see is there zobel network on output?
what values can you suggest?
R?
C?
is R=100R
C=.47uf
is this fine?
Attachments
Valuable of this amplifier is that you can get high performance amplifier with available parts. Heatsink is OK for full power, what is rail voltage on your amp? There is no fancy look, but high-end sounding amp for sure.
Regards
40-0-40ac available transformer for testing darlington kelvin a100
Use 10R/2W and 0,1uF/250Vwhat values can you suggest?
R?
C?
is R=100R
C=.47uf
is this fine?
Use 30-0-30ac for TIPs, 40-0-40ac is for BDWs or 2SB/2SD or use AX14 from post #1 with 2SA/2SC.40-0-40ac available transformer for testing darlington kelvin a100
Last edited:
Subwoofer x-over?apex,
this kelvin is waiting for your active x-over
tnx
D1 on D14 schematic reverted polarity! This is right polarity.apex,
another good sounding amp
tnx to apex,
see bigger heat sink
Attachments
Last edited:
D1 on D14 schematic reverted polarity! This is right polarity.
thanks,i will reverse this diode
i copy that not cerrected ladscape
X-over for subwoofer will be post in thread:apex,
this kelvin is waiting for your active x-over
tnx
http://www.diyaudio.com/forums/solid-state/167363-mic-line-eq-preamps.html
Regards
- Home
- Amplifiers
- Solid State
- 100W Ultimate Fidelity Amplifier