Spector NS-95 onboard bass preamp and wirinigs comparison

I used selected potentiometers for frequencies (100k /- 2% both). Real balance potentiometer which I used with twb-2 is about 20 kOhm not “25k“ like wrote on it. I think that 100k balance could be good too: something between wirings: 25k BAL 500k VOL and 500k BAL 500k VOL. So you can use any your own wiring and get your own sound with the same preamp!