Outputs

 

IMPEDANCE

 

 

 

 

 

 

Designed for

Actual

Output

Output

Use With

(Internal)

Clipping Level

 

 

 

 

Microphone

Any low imped-

0.5

±34 dB

 

ance microphone

 

(20 mV)

 

input

 

 

 

 

 

 

Mix Bus

3.5 kΩ

3.5 kΩ

±8 dBV

 

 

 

(400 mV)

 

 

 

 

Head-

8 - 2000 Ω

400 Ω to

+10 dBV

phones

200 Ω

3 kΩ∗∗

(3.3 V)

 

recommended

 

 

 

 

 

 

Line

600Ω

150Ω

+18 dBm

 

 

 

(6.2 V)

 

 

 

 

∗∗Depending on level control setting

 

Noise

 

 

 

Equivalent Input Hum and Noise: ±126 dBV (low im- pedance microphone, 150 Ω - 20-20,000 Hz) into a 600 Ω load at full gain

Output Noise: ±75 dBV (master control fully counter- clockwise), ±53 dBV (master fully clockwise), (input con- trols down, 300-20,000 Hz)

Output Hum and Noise: ±70 dBV (master control down), ±51 dBV (master control up) (input controls down, 20-20,000 Hz)

Distortion

0.35% or less THD from 30 to 20,000 Hz at +15 dBm output; 0.5% or less IM distortion up to +15 dBm output level

Common Mode Rejection

65 dB minimum with input of ±20 dBV at 100 Hz

Headphone Output Clipping Level

3.16V (+10 dBV) into 200 Ω

Tone Oscillator

1,000 Hz, 1.5% or less THD

Phantom Power

30 Vdc open-circuit, 3.3 kΩ series resistance, input switches in MIC position only

Operating Voltage

Ac Operation: 120 or 240 volts ±10%, 50/60 Hz, 9.5W, internally switchable[

Dc Operation: 27 volts nominal at 15 mA typical no- signal, 18 mA typical at 0 VU (+4 dBm) output with headphone load; 21.5 volts minimum

Battery life: approximately 20 hours with alkaline bat- teries at +4 dBm output in continuous use; three 9-volt batteries, type NEDA 1604A (Duracell MN1604 rec- ommended)

[Supplied wired for 120 Vac operation (See Service section for 240 Vac operation)

Temperature Range

Operating: ±18o to 57o C (0o to 135o F)

Storage: ±29o to 71oC (±20o to 160o F)

Dimensions

Control Interaction

Less than 1 dB with any control combination

Overload and Shorting Protection

Shorting the outputs, even for prolonged periods, will cause no damage; microphone inputs will not be dam- aged by signals up to 3 volts

See Figure 1

309 mm

(12 5/32 in.)

229 mm

(9 in.)

68.8mm

(2 23/32 in.)

6.3 mm (1/4 in. )

Lo-Cut Filters

6 dB/octave rolloff at 150 Hz

Limiter

Threshold: +15 dBm (line output level; adjustable from ±4 to +18 dBm)

Attack Time: 3 msec typical

Recovery Time: 500 msec typical

Peak Indicator

Lights 6 dB below clipping or at onset of limiter action

FIGURE 1

Weight

Net:

2.3 kg (5 lb 2 oz)

Packaged: 3.2 kg (7 lb 2 oz)

Certifications

Listed by Underwriters' Laboratories, Inc., and listed by Canadian Standards Association as Certified

2

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Shure M267 Outputs, Distortion, Common Mode Rejection, Headphone Output Clipping Level, Tone Oscillator, Phantom Power
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M267 specifications

The Shure M267 is a versatile and robust audio mixer designed primarily for professional audio environments. Known for its high-quality sound and reliable performance, this mixer has been a staple in both live and studio applications. One of the standout features of the M267 is its four-channel configuration, which allows for multiple audio sources to be mixed simultaneously. This makes the mixer ideal for a variety of settings, including live events, broadcast, and recording sessions.

The M267 employs a range of advanced technologies to ensure optimal sound quality and user experience. One of the key technologies within the M267 is its low-noise preamps, which are designed to deliver clear and precise audio with minimal background noise. This is particularly important in professional environments where clarity is paramount. The mixer also includes a built-in limiter, which provides additional control over audio dynamics, preventing distortion during loud peaks and ensuring a clean signal.

The M267 features a simple and intuitive user interface that makes it easy for users of all skill levels to operate. Each channel is equipped with individual level controls, EQ settings, and PFL (Pre-Fader Listen) capabilities. With these controls, operators can tailor the audio signal to their specific requirements, whether they are balancing microphones, musical instruments, or playback devices.

Another significant characteristic of the M267 is its rugged construction. Designed to withstand the rigors of frequent transport and use in demanding environments, the mixer is built with high-quality components that ensure durability and longevity. Its compact size also makes it an excellent choice for mobile setups, allowing audio professionals to transport it easily from one location to another.

Furthermore, the Shure M267 incorporates flexibility in its connectivity options. It provides various input and output configurations, allowing seamless integration with other audio equipment. This versatility makes it a suitable choice for both permanent installations and portable setups.

In summary, the Shure M267 is a highly regarded mixer that combines professional-grade sound quality with practical features tailored for audio professionals. Its low-noise preamps, intuitive controls, rugged build, and flexible connectivity position it as an excellent choice for anyone seeking a dependable and effective audio mixing solution in both live and recorded scenarios. Whether in the studio or on stage, the M267 consistently delivers the performance that audio professionals demand.
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