hi gents , I've Got a problem with "baustain A" , it is the first stagage after the imput Amp.
It works, but wen I switch it on the signal gain from -3 dbU to +5dbU, so 8db between input/output are wrong.
My layout is correct ( checK it a lots of time ) values are all ok, My conclusion is that the schamatics in the manual wrong or at least incomplete;
CA7, for example, It is in serie with the coupling cap of the previous stage, it cause a roll off around 170Hz, the same is for CA9, so to macke it working I've to remove those both.
the feedback arrangment between, V1 Katodhe PA2 followed by RA11 seams to me not right, trimming PA2 when switch on 12db slope , there's no differance. what the metter here ?
before to take apart My original unit to check it out. I ned to know if here there's someone that has
experience with this beast. or at least is able to do a correct analysis
http://img535.imageshack.us/img535/2866/baustaina.jpg
Uploaded with ImageShack.us
It works, but wen I switch it on the signal gain from -3 dbU to +5dbU, so 8db between input/output are wrong.
My layout is correct ( checK it a lots of time ) values are all ok, My conclusion is that the schamatics in the manual wrong or at least incomplete;
CA7, for example, It is in serie with the coupling cap of the previous stage, it cause a roll off around 170Hz, the same is for CA9, so to macke it working I've to remove those both.
the feedback arrangment between, V1 Katodhe PA2 followed by RA11 seams to me not right, trimming PA2 when switch on 12db slope , there's no differance. what the metter here ?
before to take apart My original unit to check it out. I ned to know if here there's someone that has
experience with this beast. or at least is able to do a correct analysis
http://img535.imageshack.us/img535/2866/baustaina.jpg
Uploaded with ImageShack.us