Depressing the tone defeat button again to "OFF" brings the equalizer into operation. 3. FADER CONTROL A) DUAL AMPLIFIER 4-SPEAKER SYSTEM Rotating the knob to the FRONT side brings up the level of the FRONT speakers. Rotating to the REAR side brings up the level of the REAR speakers. At mid position, both sets of speakers are at maximum level. B) 2-SPEAKER SYSTEM The fader control knob should be turned to the end position which provides the loudest sound for using both sets of speakers. 4