I have a Sandberg bass factory-fitted with an onboard 2-band pre-amp. I have noticed that the treble control does not give the same amount of cut as on a passive P-bass, regardless of whether the Sandy's controls are set to active or passive. I am guessing this is some sort of compromise to make the control effecrive in both modes.
I am therefore wondering about increasing the cap value on the treble control, although I realise this may screw with its performance in other (unpredictable) ways. If I can identify the right cap, I can just experiment by solder-tacking a succession of different caps in parallel with it, until I get the result I want. However, I would prefer to know what I am doing from the start!
So... Does anyone have a schematic for the Glockenklang 2-band? Anyone tried this or other mods? Any other words of wisdom (other than 'don't do it, you'll break it')?