24-pos ELMA switch 10k. Convert to 600R use.

[Studio Mollan]

Alright. Is that only when the Dim relay is on?

 

[jsteiger]

I removed the 5k "fine trim" pots from my center section years ago. I did not see a need for them.

 

[Studio Mollan]

I removed the 5k "fine trim" pots from my center section years ago. I did not see a need for them.

I'm actually about to do just that. I'm going to replace with switches for L-R swap and a mute for one of the speakers. Maybe even an alt speaker switch.
The question is if the din pot will load the level switch when not engaged?

 

[jsteiger]

Yes they do. Maybe the dim pot can be changed to a higher value? 100k maybe? 1:10 rule. I'm sure Ian can shine a brighter light on that.

 

[Studio Mollan]

Yes they do. Maybe the dim pot can be changed to a higher value? 100k maybe? 1:10 rule. I'm sure Ian can shine a brighter light on that.

I'll stick with the switch as is. I don't have time for this mod to go crazy. Maybe in a while if things slow down I will get back to it. Thank you both for all your help!!

 

[ruffrecords]

The dim pot is connected all the time so it always loads the pot. If the dim drops the level by about 20dB then I think it would be safe to replace the 5K dim pots with 50K ones. This would significantly lighten the load on the 10K pot and still have a reasonably low source impedance when engaged (about 5K if dim is 20dB). I am not sure is is necessary to trim the dim level. I would be tempted to replace the dim pots with a couple of fixed resistors.

Cheers

Ian