Hey TB effects list,
I have bought a used EBS multi comp pedal (mint condition, newest version, virtually unused).
I operate the pedal on battery power (brand new alkaline type thing).
Signal path: passive bass into pedal in, pedal out directly into amp (GK MB500). The pedal is set for passive instrument.
Instrument: 1972 Fender Jazz Bass, stock. Pickup coils have been rewound by instrument specialist a few months ago. I use roundwound strings. They probably have around 100 hours of playing on them.
The bass knobs are all at max (max output from both PUPs, and filter set to brightest possible tone.
Problem: last night, when trying the pedal for the first time I quickly noticed some distortion when running with even moderate compression levels. The distortion was in the high frequencies. Very noticeable when slapping and also for fingering when e.g. sliding into a note.
Problem fix: I had to dial back the HI potentiometer inside the pedal to around 10 o'clock (default factory setting 12 o'clock on both pots) in order to get rid of the distortion.
My question: why would an old passive bass cause a modern compressor pedal to clip in the high frequency band?
At
Compressor Reviews there is a review of the pedal (EBS multi comp). The review mentions risk of clipping when using the pedal with some active basses, and the fix is supposed to be to dial the potentiometers CLOCKWISE, e.g. to set pots at say 2 o'clock, but I had to dial back to 10 o'clock.
Is what I experienced credible given your experiences/knowledge, or have I purchased a (slightly) mal-functioning pedal that needs to go to a repair shop?
Thanks