4AS60-112TPANEL LAYOUTControl Panelq INPUT Jack (INPUT)w Volume Control (VOLUME)e Equalizer Switch (EQ ON/OFF)r Equalizer Controls (TREBLE, MIDDLE, BASS)t Expansion Output Jack (LINE OUT)y Power Switch & Lamp (POWER)BLOCK DIAGRAMMAININPUTJK13 1IC1 1/2IC1 1/2, IC2VR4 VR3 VR1VR1SW2BASS MID TREBLEEQ OFF-ONVOLUMEMUTETR1, 2, 3LINEOUTJK2SW1CN1CN4POWER AMP SPEAKER (WOOFER)SPEAKER (TWEETER)POWERSWITCHAC INPUTPOWER SUPPLY CIRCUITACTIVE TYPETONE CONTROLq w e r t yqwerty