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SHURE SCM268E MIXER Four microphone inputs, transformer balanced

Stock code
93-547
Brand
Shure
Model number
  • SCM268E
SHURE SCM268E MIXER Four microphone inputs, transformer balanced

SCM268 4-Channel Microphone Mixer

Six Reasons the SCM268 Is The Right Choice:

Transformer. Transformer. Transformer. Transformer. Transformer. Transformer.

Another Reason: The Great Value

When you see the price attached to the SCM268 microphone mixer, you'd never guess that there are six transformers inside: four transformer balanced XLR microphone-level inputs, one transformer balanced XLR mic/line output, and one internal low stray field, toroidal power transformer.

Nor would you expect that the six transformers are just the start of what makes the SCM268 such a great value.

But, then again, it's a Shure. So you've come to expect this kind of commitment to affordable quality.

So Many Benefits. So Little Space

All those audio transformers provide protection from RF interference, prevent ground loops, and make the SCM268 exceptionally quiet. The internal toroidal power transformer means you no longer have to deal with that annoying "wall wart."

Add to this a rugged half-rack chassis -- with exceptionally solid rack mounting hardware -- and the SCM268 will easily fit into the widest range of smaller applications, such as:

Meeting rooms

Houses of worship

Broadcast

Educational paging and public address

Sound system rental

Part of Shure's Growing Line Of Quality "SCM" Mixers

For over a generation, Shure mixers, as well as a host of other Shure products, have been chosen for installed sound applications with unparalleled peace-of-mind. The SCM268 continues this tradition of quality performance at a great value. If you want half a dozen transformers in a half-rack space, choose the SCM268. You will be wholly satisfied.

The SCM268 fits into a half-rack space and includes all the necessary rack mounting hardware.

Features

  • Five unbalanced aux level inputs (Phono connectors)
  • LED peak output meter
  • One unbalanced aux level output (Phono connector)
  • IEC power cord connector
  • 12V phantom power for condenser microphones
  • Built-in low cut filters on mic inputs
  • Meeting rooms
  • Houses of worship
  • Broadcast
  • Educational paging and public address
  • Sound system rental

Specifications

Specification Sheet (pdf)

Measurement Conditions (unless otherwise specified):
Line voltage 120 Vac, 60 Hz (SCM268) or 230 Vac, 50 Hz (SCM268E); full gain; 1 kHz, one channel activated; source impedances: Mic 150 ohms, Aux Level 150 ohms; terminations: Line 600 ohms, Mic 600 ohms Aux Out 10 kilohms 12 V phantom power off.
Frequency Response (Ref 1 kHz, controls centered)
Microphone Inputs: 150 Hz to 20 Khz +/- 2 dB (built-in 80Hz low-cut)
Auxiliary Inputs: 20 Hz to 20 kHz +/- 2 dB
Low-Cut Filter (Microphone inputs only)
3dB down at 80 Hz, 6 dB/octave
Gain (typical, controls full clockwise)
  Output
Input Mic Line Aux Out
Low-impedance mic
150 ohms
38 dB 76 dB 65 dB
Aux Level 3 dB 40 dB 29 dB
Inputs
  Impedance  
Input Designed
for use with
Actual(Typical) Input
Clipping Level
Mic 19-600 ohms 1.2 kilohms -5 dBV
Aux Level ≤2 kilohms 21 kilohms >28 dBV
Outputs
  Impedance  
Output Designed
for use with
Actual
(Typical)
Output
Clipping Level
Mic low-Z inputs 0.2 ohms -21 dBV
Line >600 ohms 72 ohms +18 dBV
Aux Out >2 kilohms 870 ohms +7 dBV
Total Harmonic Distortion
<0.25% at +4 dBu output level (through 22 Hz-22 kHz filter; Input 1 and Master centered, all other controls full counter-clockwise)
Equivalent Input Hum and Noise(150 ohm source; through 22 Hz-22 kHz filter)
124 dBV
Output Hum and Noise (through 22 Hz-22 kHz filter; channel controls full counterclockwise)
Master full counterclockwise: -92 dBV
Master full clockwise: -70 dBV
Common Mode Rejection
>80 dB at 1 kHz
Polarity
All inputs to all outputs are non-inverting
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no damage. Microphone inputs are not damaged by signals up to +10 dBV; Auxiliary inputs by signals up to +36 dBV
Phantom Power
12 Vdc open-circuit through 340 ohm series resistance
Operating Voltage
SCM268: 100-120 Vac rated nominal, 50/60 Hz, 60 mA
SCM268E: 220-240 Vac rated nominal, 50/60 Hz, 30 mA
Temperature Range
Operating: -7 degrees to 49 degrees C (20 degrees to 120 degrees F)
Storage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)
Overall Dimensions
44 mm H x 218 mm W x 162 mm D (1.72 x 8.60 x 6.37 inches)
Net Weight
1.20 Kg (2 lbs, 10 oz)

User Guides

SHURE MIXERS AND PROCESSING

Shure mixers and digital signal processors can 'help your sound achieve a level of audio nirvana you never thought possible'. Their versatility and power makes them 'ideal for sound reinforcement, audio recording and broadcast'.

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