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manual abstract
Each channel has a pair of switch-selectable inputs, either of which is usable with mic or line level sources. The input channels also have interstage p~tch points (EQ Out/Fader In jacks). Similar insert point, also are provided for the program, echo and oldback busses. The M916 has 11 mixing busses (including a 6 x 4 matrix), and theatrical and broadcast jobs. In large scale concert reinforcement environments, the M916 can be used as an adjunct to the main mixing console or as a stage monitor mixer. The M916 is built of only the finest components such as smooth, quiet faders, and equalizers with center-tapped “flat” position setents, These controls are calibrated accurately, in dB, for precise, repeatable settings that save valuable set-up time. To ensure the M916 holds up under “real world” conditions, it is equipped with a bipolar 25 volt power supply that affords a generous margin of headroom (an easy +24 dBm output). Internally the M916 has the convenience of modular plug-in circuitry, and-outside a solid front panel adds to strength and durability. You’ll appreciate the extra refinements in theM916’s advanced technology, reliability and human engineering. For example, the pick-off points for the switch selectable pre-post echo and foldback sends may be changed by means of simple jumper rewiring. Similarly, 10 dB of gain can be added to the Mixer’s program, echo and/or foldback outputs, and the sentitivity of the effects and matrix auxiliary inputs can be increased 24 dB by simple jumper changes. To take full advantage of your M916 mixer, please read this manual carefully. CONTENTS Page. GENERAL SPECIFICATIONS................... 2 INPUT/OUTPUT SPECIFICATIONS............... 4 OPERATING INSTRUCTIONS-FRONTPANEL INPUT CHANNELS....................... 5 MASTER OUTPUT SECTION/EFFECTS RETURN SECTION............................. 8 MIX MATRIX .......................... 9 HEADPHONE MONITOR SECTION.............10 TALKBACK SECTION.....................11 VU METERS...........................12 INSTALLATION & REAR PANEL FEATURES.........13 OPTIONAL FUNCTIONS......................16 APPLICATIONS SOUND REINFORCEMENT .................17 STAGE MONITOR SYSTEM..................18 RECORDING & MIXING SYSTEM..............19 MAINTENANCE & SERVICE...................20 BLOCK DIAGRAM.........................21 LEVEL DIAGRAM.........................22 WARNING : TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. THERE ARE NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO A QUALIFIED SOUND EQUIPMENT TECHNICIAN. GENERAL SPECIFICATIONS Frequency Responce (+4 dB/600 ohms) Total Harmonie Distortion (THD) Hum 8t Noise** (20 Hz to 20 kHz, input termination of 150 ohms, all output assign switches ON, Input Level switches at "—60") Crosstalk Maximum Voltage Gain (Input level switch at "—60", where applicable) Channel Equalization (± 15 dB Maximum) High Pass Filter Talkback Inputs to Mixer Mixing Busses Mixer Outputs +0, —3 dB, 20 Hz to 20kHz; +0, -0.5 dB, 30 Hz to 15 kHz. Less than 0.6% at +10 dB*output, 20 Hz to 20 kHz; Less than 0.1% at +20 dB*output, 70 Hz to 20 kHz. —127 dB Equivalent Input Noise (EIN) —95 dB* residual output noise ; all Faders down. —78 dB (82dB S/N) PGM OUT ; Master Fader at nominal level and all Input Faders down. —63 dB (67dB S/N) PGM OUT ; Master Fader and one Input Fader at nominal level. —73dB (77dB S/N) MTRX OUT ; Matrix mix and Master level controls at maximum, one Master Fader at nominal level and all Input Faders down. —63 dB (67dB S/N) MTRX OUT ; Matrix mix and Master level controls at maximum, one Master Fader and one Input Fader at nominal level. —73 dB (77dB S/N) FB or ECHO OUT ; Master Fader or level control at nominal level and all FB or ECHO mix controls at minimum level. —63 dB (67dB S/N) FB or ECHO OUT ; Master Fader or level control and one FB or ECHO mix control at nominal level. —60 dB at 1 kHz : adjacent Inputs. —60 dB at 1 kHz : Input to Output. PGM 84 dB MTRX 84 dB FB 94 dB ECHO 94 dB SUB IN 10 dB EFFECTS IN 20 dB : MTRX AUX IN 10 dB CHANNEL IN to PGM OUT. CHANNEL IN to MTRX OUT. CHANNEL IN to FB OUT. CHANNEL IN to ECHO OUT. SUB IN to PGM OUT. EFFECTS IN to PGM OUT. : MTRX AUX IN to MTRX OUT. HIGH 10 kHz Shelving MID 500, 700, 1 k, 1.6 k, 2.5 k, 3.5 kHz Peaking LOW 100, 250 Hz Shelving 18 dB/octave roll-off below 80 Hz. Microphone or Line input XLR, preamp, level control, and push-to-talk switch; to PGM/MTRX busses, FB busses, ECHO busses. 32 x CHANNEL IN (16 M1, 16 M2, both mic/line). 6 x SUB IN (Submixer Input to PGM, FB & ECHO busses). 2 x EFFECT IN (Auxiliary program input and effects return). 2 x MTRX AUX IN (Auxiliary program input and effects return). 1 x TB IN (Mic/Line In). 16 x INTER-STAGE PATCH (FADER IN) 6 x MASTER IN (2 ea. for PGM, FB & ECHO). 2 x Main PGM (L&R); 4 x MTRX; 2 x FB; 2 x ECHO; 1 x CUE (preview). 2 x PGM; 4 x MTRX; 2 x FB; 2 x ECHO; 2 x Headphone (one 2-channel jack...