Hisense RL-32B02, Быстрый старт

Страница: 14 / 60

14
(B) Audio Circuit
The circuit includes one AV2 audio, one PC/YPBPR audio multiplexing, one S video audio and one
AV1 audio multiplexing input. HDMI has its own audio input. All audio frequency signals are input
to U8 of MST9U88L, where the signals are processed with alt, undertone, balance and bass effects;
after that, they go into U16 for SRS WOW processing and then drive the audio amplifier circuit
TDA8932. The exciting signal of last level audio output from the audio amplifier drives the
loudspeaker.
In consideration of the amplifying capacity of TDA8932, the audio signal is pre-amplified before
going into TDA8932. The audio signal, i.e. TV1-L left track signal output from U8 Pin 85 goes into
U16 Pin 38 for SRS WOW processing and then is output from Pin27. It passes through R272, and is
amplified by LM833 and output from R292 as AMP L signal. The AMP R (the right track) output
from U8 Pin 86 goes into U16 Pin 39 for SRS WOW processing and is output from Pin 28. It passes
through R275, TL062 and R293 and is output as AMP R signal. AMP LIN goes via R287 into N12
Pin 2, and the other goes into N12 Pin 15. They are processed in TDA8932 and then output to drive