idle adjustment jumper cables Pioneer SA-508

[Raizor]

Dear all,
In most Pioneer vintage amps the idle adjustment is set by two jumper cables. If it measures too low you're supposed to cut the jumper cables. See picture for an example.


I'd like to replace these jumper cables with a trimmer to precisely adjust it. Which type of trimmer would be suitable? How many Ohms and how to solder in the leads (three leads seem to be the standard)? Thanks in advance for your advice.

 

[vzaichenko]

Hi, resistor is 10 ohm there. You can use 20 ohm pot to have more flexibility.
However, it's not really required, I think.
Did you measure the output stage quiescent current as-is?

Cheers,
Valery

 

[Raizor]

Hi, thanks for your reply. I didn't yet measure.
If I solder in the trimmer as seen on the picture, I need to attach the center lead to one of the outer leads?