Subwoofer Class AB plate amp

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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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