It's a surprisingly tricky request. These days chipamps have almost taken over in this power range and for good reason, they are cheap and almost always perform better than a discrete equivalent.
Regarding a discrete, mature, proven design with good support, which is now what you seem to be after, I would suggest the John Linsley Hood 1969 amplifier, but it's Class A and not efficient, so not what you want I imagine.
I'm not sure you're sure what you want, so I'm going to leave it like that for the time being 😀
Regarding a discrete, mature, proven design with good support, which is now what you seem to be after, I would suggest the John Linsley Hood 1969 amplifier, but it's Class A and not efficient, so not what you want I imagine.
I'm not sure you're sure what you want, so I'm going to leave it like that for the time being 😀
Hi Mark,
Great looking PCBs. What's your PS design? One bridge per rail? Does the board have space for snubbers on the diodes? What type/format diodes will be used?
I'm not set on any particular transformer. Less is more... except I do want each compact stereo amp to be capable of say 2x30W into 6 ohms. Easier to re-purpose afterwards...
Currently my subwoofer is directly connected to the amplified speaker binding posts on my integrated amp. In the new arrangement, to serve up bass for both left and right I would have to use the same four wires (L + gnd, R + gnd) to connect to the bass outputs on the two separate amps...? No point connecting to the treble output? Still means the amps would be co-located probably...
Great looking PCBs. What's your PS design? One bridge per rail? Does the board have space for snubbers on the diodes? What type/format diodes will be used?
I'm not set on any particular transformer. Less is more... except I do want each compact stereo amp to be capable of say 2x30W into 6 ohms. Easier to re-purpose afterwards...
Currently my subwoofer is directly connected to the amplified speaker binding posts on my integrated amp. In the new arrangement, to serve up bass for both left and right I would have to use the same four wires (L + gnd, R + gnd) to connect to the bass outputs on the two separate amps...? No point connecting to the treble output? Still means the amps would be co-located probably...
Hi Scott! I want low distortion but Class A is out of the question for me. This time around I want something compact. Cheers - Pops.
The snubbers used on the PSU boards are inspired by the RingNot PSU. The attachment in the first post explains more. I have MUR680 diodes already. The FFPF30UP20 looks good too with 30A max current.
I use 4 diodes per rail because I am convinced that it produces lower noise on the PSU/amp ground than 4 per two rails.
I use 4 diodes per rail because I am convinced that it produces lower noise on the PSU/amp ground than 4 per two rails.
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