Potentiometers for DIY SSL 4000 EQ

[Evillamp]

Hello,
this is my first post here.
so i am about to aquire a set of SSL 4000 eq pcbs (the ones made by Casey RS-82E02-Q)
the only problem i have is finding the tripple potentiometers( the 47k 47k 22k ones in the HF area of the circuit).
my question would be ,is there a way to substitute those with something more commonly found or are there any workarounds.
thanks in advance for any answers
greetings from germany

 

[HerbertR]

Hi, most people do it like this... they split frequency and gain potentiometers. Look at the wires in the picture that go from the "third gang" soldering pads on the board to the 22k center detent "gain" potentiometer (20K or 25K will work too). The frequency potentiometer needs to be a 47K ohm (or 50k ohm) "dual gang" potentiometer soldered to the first two soldering pad rows of potentiometers on the board. That's all. You can find the cheap potentiometers on Aliex or pretty good and cheap "Alpha" potentiometers at Taydae Electronics in Thailand - if they have stock.
Regards Herbert

 

[Evillamp]

Hi, most people do it like this... they split frequency and gain potentiometers. Look at the wires in the picture that go from the "third gang" soldering pads on the board to the 22k center detent "gain" potentiometer (20K or 25K will work too). The frequency potentiometer needs to be a 47K ohm (or 50k ohm) "dual gang" potentiometer soldered to the first two soldering pad rows of potentiometers on the board. That's all. You can find the cheap potentiometers on Aliex or pretty good and cheap "Alpha" potentiometers at Taydae Electronics in Thailand - if they have stock.
Regards Herbert

thank you so much much thats exactly what i needed