jose

yes, I have the same habit. You never know when we'll need spare parts

2mm OK

I feel that my question will choke you. I was just curious I haven´t intention of setting up a production chain in China.

If you have not noticed, it's been better than I thought. OK, use a 500 Ohm trimpot on 250R place (Rail +) and maybe change 10K resistor on the OPA (- Output to Ground). However, Dr Gilmore is still working on a solution (Thanks Dr. Gilmore for you patience)

Not as elegant as a servo but works

Thanks Pars. I bought both.

Is the knob already assembled?

Could I use those regulators as dc-dc converters? Edit: I need a step down from 20 Vdc to 12Vdc

How do you put the led on the volume knob?

I'm waiting win the lotto

Ufffffff. Paragon is a beautiful speaker. I guess you know the work of "Kenrick Sound" restoring the Paragon ans other JBL models Sorry for offtopic

Yes, yes, I followed the recommendation of that post but now I have changed the volumen, putting it between the unbal/bal and buffers. It is also true that you use an attenuator (relay or digital I´m not sure) and I am using a volume pot.

Nop... Apparently the right place for the Unbal/bal is before the volume pot. I guess it worked better with a stable input voltage. Maybe Dr. Gilmore can explain it to us. Offset is a different problem. We are working on this. Apparently it is easy to solve without changing our pcb's. I just fixed one of mine, but surely there will be an improved PCB. Basically we already know how to fix it. Modifying the 250 Ohm resistors... at least in my case. I need to modify the rest of my buffers to compensate the offset. Let me experiment a little.

I´m working on my KG Preamp unbal/bal. I was setting up my preamp in the following way: Input- Volume-Unbal/Bal-Buffer-output. Dr Gilmore recommended me to change the order and put the volume between the Unbal / Bal and the Buffers, so now is: Input-Unbal/Bal-Volume-Unbal/Bal-output.