Mackie M800 Owner's Manual - Page 25

M•800 BLOCK DIAGRAM 25 CH 1 BALANCED LINE INPUT (XLR-F) THRU (XLR-M) CH 1 BALANCED LINE INPUT (TRS) CH 2 BALANCED LINE INPUT (XLR-F) THRU (XLR-M) CH 2 BALANCED LINE INPUT (TRS) FREQ FREQ LOW CUT FILTER CD EQ ON OFF FREQ FREQ LOW CUT FILTER CD EQ ON OFF POWER FUSE SWITCH TOROIDAL POWER TRANSFORMER LAMP STEREO MONO BRIDGE CH 1 GAIN INVERTING UNITY GAIN AMPLIFIER +74VDC LIMITER +64VDC DETECTION LIMITER OFF ON LIMITER SWITCH AMP MUTE DC OFFSET PROTECT -64VDC -74VDC STEREO MONO BRIDGE STEREO MONO BRIDGE TEMP SENSOR (ON HEATSINK) + 64 VDC - OFF ON +74VDC +64VDC CH 2 GAIN LIMITER MUTE AMP LIMITER DETECTION -64VDC DC OFFSET PROTECT 60ºC -74VDC DETECTOR CH 1 AMP OUT CH 2 AMP OUT PROGRAM DETECT HOT LED 80ºC MUTE 55ºC UNMUTE NORM LED AND FAN SPEED CONTROL OR HI DCV MUTE CONTROL LO DCV MUTE 4 SEC DELAY (TURN-ON) + 74 VDC - OL -3 METER -6 DRIVE -9 -20 CH 1 SPEAKER OUT OL -3 METER -6 DRIVE -9 -20 CH 2 SPEAKER OUT TO HUSKY STADIUM FAN MUTE THERMAL PROTECT