Be aware also, before you go twiddling pots about willy-nilly - that some Perreaux amps don't have DC offset pots ie 1850B and similar. They have bias pots and distortion nulling pots and DC offset is set only by matching the input pair. The distortion pot is set at the factory so unless you have a nice way to observe harmonic distortion it might be best not to twiddle that one. 8)
Hi there,
I'm not sure if this threading is still open. My PMF-1150B needs to be worked on. I wanna replace all the caps. I don't have any schematic and been looking for one even at the factory with no luck. My pmf 1150B looks a little different in the circuit. This one doesn’t have a transistor number in it and I only have 1 trimpot on each side. If there is a way I can get any info, that will be great. Below are the pics.
https://i.postimg.cc/gc3zdPV4/SAM-2077.jpg
https://i.postimg.cc/Kj7x5nGC/SAM-2079.jpg
https://i.postimg.cc/tTxXYKLq/SAM-2081.jpg
v\:* {behavior:url(#default#VML);}o\:* {behavior:url(#default#VML);}w\:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);}Thanks,
I'm not sure if this threading is still open. My PMF-1150B needs to be worked on. I wanna replace all the caps. I don't have any schematic and been looking for one even at the factory with no luck. My pmf 1150B looks a little different in the circuit. This one doesn’t have a transistor number in it and I only have 1 trimpot on each side. If there is a way I can get any info, that will be great. Below are the pics.
https://i.postimg.cc/gc3zdPV4/SAM-2077.jpg
https://i.postimg.cc/Kj7x5nGC/SAM-2079.jpg
https://i.postimg.cc/tTxXYKLq/SAM-2081.jpg
v\:* {behavior:url(#default#VML);}o\:* {behavior:url(#default#VML);}w\:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);}Thanks,
Last edited:
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