Yours has -
IC1a - input sum/X10 amp
IC1b - rumble HP 2nd order
IC2a - LP 2nd order (X-over freq)
IC2b - phase and output buffer.
This is a cheap car audio filter.
1st post of this thread is a better one
with 24/db octave LP.
U3.1 variable resistor from + input to ground was omitted.
Yours would work ,it would not have as sharp a LP cutoff .
Might hear a little midbass on your sub.
OS
Hi OS,
I give up. Its too difficult. Can you share your x-over PCB via PM?
reg
prasi
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