Bypassing an op-amp low pass/high pass filter

Discussion in 'General Electronics Chat' started by A.J, Jan 30, 2014.

  1. A.J

    Thread Starter New Member

    Jan 30, 2014
    1
    0
    Hi all, new user here, question:

    I have an old Sony Sub-Woofer unit, uses STK 404, I want to bypass the op-amps in charge of the low pass/high pass filtering, uses 4558, schematics are at http://diagramas.diagramasde.com/audio/SA-GN1 sm.pdf
    I just want to bypass IC-602, is there any way to easily bypass this unit without too much modification? Any help would be appreciated.
     
  2. Brevor

    Active Member

    Apr 9, 2011
    279
    54
    Remove C605, C608 and R611. Run a wire from the empty hole from where you removed C605 that connects to Pin 1 of IC601, run it to the empty hole from where you removed C608 that connects to pin 3 of IC602.
     
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