Mackie M1400/M1400i Contactor's Specs (M1400) - Page 4

Block Diagram 4 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) MACKIE DESIGNS M•1200/M•1400 BLOCK DIAGRAM (#011497DF) FREQ FREQ SIG (TO CH 1 METER DRIVE) LOW CUT FILTER CD EQ ON OFF FREQ FREQ FREQ 63 Hz 125 Hz LOW PASS FILTER (SUBWOOFER) LOW CUT FILTER CD EQ ON OFF SIG (TO CH 2 METER DRIVE) INTERNAL POWER FUSE SWITCH TOROIDAL POWER TRANSFORMER LAMP TO CH 1 AND CH 2 MUTE THERMAL PROTECT PD's LEASH + 80 VDC - OUTPUT APPLICATION ON SWITCH OFF SUB TO LIMITER NC NC ON OFF SUB TEMP SENSOR (ON HEATSINK) + 90 VDC - CH 1 GAIN INVERTING UNITY GAIN AMPLIFIER STEREO MONO NC BRIDGE AMP MODE SWITCH LIMITER CH 2 GAIN LIMITER CH 1 PROTECT LED TO CH 1 MUTE FUSE +80VDC CH 1 SHORT LED SHORT DETECT DC OFFSET DETECT MUTE CH 1 MUTE CH 2 PROTECT LED POWER AMPLIFIER FUSE -80VDC TO CH 2 MUTE FUSE +80VDC CH 2 SHORT LED SHORT DETECT DC OFFSET DETECT MUTE POWER AMPLIFIER CH 2 MUTE FUSE -80VDC HOT LED 80ºC MUTE 55ºC UNMUTE COLD LED TO CH 1 AND CH 2 MUTE 60ºC DETECTOR CH 1 MUTE CH 2 MUTE FAN SPEED CONTROL FAN CH 1 AMP OUT CH 2 AMP OUT HI DCV LO DCV 1.25" (3.2cm) 16.25" (41.3cm) CH 1 16 14 8 GAIN/dB 3v 18 20 22 SENSITIVITY 1.23v (+4dBu) 30 1v 24 28 26 2v OL -3 -6 -9 -20 SIG 00 00 OL -3 -6 -9 -20 SIG 16 14 8 OL -3 METER -6 DRIVE -9 -20 SIG CH 1 SIG CH 1 SPEAKER OUT 1/4" TS JACK M•1200 only OL -3 METER -6 DRIVE -9 -20 SIG CH 2 SIG CH 2 SPEAKER 1/4" TS JACK OUT M•1200 only TO HUSKY STADIUM FULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGN GAIN/dB 3v 18 20 22 SENSITIVITY 1.23v (+4dBu) 30 1v 24 28 26 2v CH 2 Built-in subwoofer crossover. The amplifier has a subwoofer mode that allows you to turn on the built-in subwoofer crossover. When activated, the signals appearing at the left and right inputs are summed, directed to a low-pass filter, and routed to both output stages. A switch selects the cutoff frequency of the filter at either 63Hz or 125Hz, and the amplifier can be set to either mono or bridge mode of operation. Built-in constant directivity horn compensation. When a compression driver is attached to a constant directivity (CD) horn, it requires a certain amount of high- 17.25" (43.8cm) M•1200/1400 WEIGHT 36 lbs. (16.3 kg) CH 1 INTERNAL STATUS COLD PROTECT SHORT TEMP STATUS CH 1& 2 CH 2 HOT M•1200/M•1400 DIMENSIONS 19.00" (48.3cm) PROFESSIONAL POWER AMPLIFIER ON OFF POWER 3.50" (8.9cm) 2U 15.25" (38.7cm)