I have a good friend who had the JL-1 monos. Like many Audio Research amps, it's not possible to bias individual push-pull pairs - you can only bias an entire bank of tubes, which requires owners to purchase very carefully matched octets. I'm not criticizing the sound of the amp - the CAT amps are spectacularly good and have no equal in their ability to drive virtually any speaker, but they can be a real pain to tube and I suspect you're going to hear this from owners here.
Convergent Audio CAT JL3 tube biasing/manual
I have just purchased a used pair of CAT JL3 Sig Mark 2 mono blocks and they came without a manual or instructions on tube biasing.
I would be very grateful to anyone who could offer advice on tube biasing and push-pull balance or even better if they had an electronic version of the manual.
Razvan
razvanstoita2000@yahoo.com.au
I would be very grateful to anyone who could offer advice on tube biasing and push-pull balance or even better if they had an electronic version of the manual.
Razvan
razvanstoita2000@yahoo.com.au