Loss of bass output, low level compared to mid and treble input test signals. Altering bass pot makes little difference in output level with bass test signal and marginal max is near the centre. I've not traced the bass pot back to a DSP area yet. Bass and other pots are not broken/worn and solder seems ok . This is PbF/RoHS and Korg era. Anyone know how much circuitry is common to the Korg/Vox AD100VT schematic ? or a schematic perhaps for the VT100 . Same o/p STK404-130S and "valvetronix" low-voltage LED-lit valve fudge (whats the point of DSP if you don't emulate valve function?) but different op-amps types at least. This is a DSP amp with dedented pots for rotary function switch action so expect future problems there.
- posted
10 years ago