The subwoofer filter circuit allows the addition of subwoofers to an existing full-range system, offering adjustable low-pass filtering with optional R6 and R8 boost and mono-summing.
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Rangkaian 11-90 hz Subwoofer Filter Using TL072 Op-Amp
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Skema Rangkaian 11-90 hz  Subwoofer Filter
Using TL072 Op-Amp
Using TL072 Op-Amp
The
 Subwoofer filter circuit to remove for separate pre amplifier to drive 
the low frequency sound a lot. In tone, call tone, normal Can not be 
done … is a fine deep low bass sounds like a bass drum, or at a movie 
complex in a low voice if we can be heard with But to add cabinets and 
amps. The subwoofer circuit is pass low frequency with in 11-90 Hz. 
Switching power supply 12V cut out if they need to use +-15V. I had 
change the Capacitor to cut out vocals per the red circle mark. 
 

 




 
 
 
 
 
 
