TWH32 audio internal schematic diagram

This is the internal schematic diagram of IWH32 .
    The TWH32 module is composed of a quad operational amplifier and
some resistor-capacitor components. The filter composed of fCl-a in Figure D
has a turning frequency of about 250Hz. For 250Hz.
The following frequencies are greatly improved, but
there is almost no amplification capability for mid- and high-frequency signals. The amplifier composed of ICl-b
further amplifies the signal, and its gain is adjusted by an external potentiometer
.
    Since the TWH32 subwoofer module has only one stage filter
and a relatively simple circuit , its actual use effect is
slightly worse than the circuits introduced previously.
    Above we have introduced the circuits of several subwoofer systems
. We can choose the circuit and speakers according to the actual situation , and then connect them to the sound system and reasonably adjust the cutoff frequency
so that the subwoofer system can better match the lower limit frequency of the original sound system. At the same time, pay attention to the appropriate volume of the subwoofer
. Not too much