M367 Six Input Portable Mixer

NOTE: This product has been discontinued.

(Discontinued) Six-input, portable microphone mixer/remote amplifier designed for professional applications in electronic news gathering (ENG), electronic field production (EFP) and general audio mixing.

The Shure Model M367 is a six-input, portable microphone mixer/remote amplifier specifically designed for professional applications in electronic news gathering (ENG), electronic field production (EFP) and general audio mixing. Exceptional low-noise design makes the M367 ideal for use with digital transmission links and digital video/audio recording media, including ISDN and DAT. Compact and rugged, the M367 is built to withstand the most demanding field production conditions. In addition, its excellent performance, versatility and features make it an ideal choice for studio, remote, or sound reinforcement use, and as an add-on mixer for expanding existing facilities.

Each M367 handles up to six microphones or line-level signals. Any high-quality, low-impedance, balanced microphone using a dynamic or condenser* transducer (including wireless and shotgun types) can be used. Additional M367 or other Shure mixers can be linked using the rear-panel mix bus jacks.

*Self-powered or operable on 12 or 48 Vdc phantom power.

• Six balanced mic/line inputs
• Two XLR outputs
• Adjustable limiter threshold
• Power On, input clipping and output peak/limiter LEDs
• 12- and 48-volt phantom power
• 1 kHz tone oscillator switch (mutes all inputs, level control on master)
• Mic/line switches on each input and output
• Low-cut filter switches
• Headphone monitor circuit
• Two position Mix Bus
• VU metering
• Easy-access side battery compartment, with battery check function
• Power via battery two standard 9-volt alkaline or 120/230V ac (detachable power cord supplied)
• Rack mountable with available A367R accessory

Specification Sheet (pdf)

CAD file (dxf)

 

Frequency Response

20 to 20,000 Hz +/- 2.0 dB (channel controls centered)

Total Harmonic Distortion

0.25% THD at +4 dBm output, 55 to 20,000 Hz

Equivalent Input Noise

< -127 dBV with 150 ohm source, 400 to 20,000 Hz

Output Noise

Master level full CCW: -100 dBV, 400 to 20,000 Hz

Master level full CW: -80 dBV, 400 to 20,000 Hz

Hum and Noise

Equivalent Input: <125 dBV, 20 to 20,000 Hz

Output: -95 dBV (Master CCW), -75 dBV; (Master CW), 20 to 20,000 Hz

Common Mode Rejection Ratio

65 dB at 100 Hz, -20 dBV input

Polarity

Mic/Line In to Mic/Line Out: Non-Inverting

Mic/Line In to Phones: Non-Inverting

Mic/Line In to Mix Bus (tip): Inverting

Monitor to Phones: Non-Inverting

Mix Bus to Mic/Line Out: Inverting

Overload and Shorting

Shorted outputs, even for prolonged periods, cause no damage. Microphone inputs of up to 3 Vrms cause no damage. Line and monitor can withstand signals of up to 30 Vrms.

 

Input Peak Indicators

6 dB below clipping level

Output Peak Indicator

Lights red at 6 dB below clipping level

Output Clipping Level

< +18 dBm at line output into 600 ohms

Low-Cut Filters

7 dB down at 150 Hz; 6 dB/octave slope (3 dB down at 260 Hz)

Tone Oscillator

1 kHz +/- 20%

Limiter

Threshold: Switchable: 0, +4, +8, +16 dBm

Attack Time: 1 ms +/- 0.5 ms

Release Time Constant: 100 ms +/- 30 ms

Indicator: Green when limiting by 1 dB or more

 

Phantom Power

12 V Phantom: 12 V through 340 ohms

48 V Phantom : 48 V through 3.4 kilohms

 

AC Power

M367: 100 - 120 Vac, 50/60 Hz, 100 mA

M367E: 220 - 240 Vac, 50/60 Hz, 50 mA; no-signal current drain 25 mA

 

DC Power

18 Vdc nominal at 40 mA typical no-signal, 45 mA typical at +4 dBm output; 13.5 Vdc minimum

Batteries

Two 9 V alkaline batteries

Battery Life

Up to 8 hours at +4 dBm output in continuous use.

 

Temperature Range

Operating: -18 degrees to 57 degrees C (0 degrees to 135 degrees F)

Storage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)

Overall Dimensions (H x W x D)

71.9 mm x 308 mm x 233 mm (2 13/16 in. x 12 5/32 in. x 9 5/32 in.) including feet.

Weight (without batteries)

3 kg (6.6 lb)

 

Measurement conditions (unless otherwise specified):

 

Operating voltage 120 Vac, 60 Hz (18 +/- 1 Vdc for dc test); operating temperature 22 degreesC (72 degrees F); input signal 1 kHz; internal DIP switches 1­7 open; Power switch on; Mic/Line switches to Line; low-cut switches to flat; Limiter out; Phantom power off; Mix Bus to M367; channel 1 gain full CW; channel 2 through 6 full CCW; Master full CW; Phones level full CCW; Line output terminations 600 ohms (pins 2 and 3); Mic output terminations 150 ohms (pins 2 and 3); Phones (1/4"-ring) 300 ohms to ground; Phones (1/4"-tip) 300 ohms to ground; Phones (3.5 mm) unloaded; Mix Bus 930 ohms (M367 position) or 3.5 kilohms (M267 position), not connected unless specified; 1 kHz input signal.

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