Shure SCM268 4-Channel Microphone Mixer

Enjoy big value in a compact unit with the SCM268 from Shure. This 4-channel microphone mixer delivers awesome performance value and pristine audio quality, boasting low noise and a flat frequency response, and featuring 4 transformer-balanced inputs, 5 -10 dB line-level inputs, 12V phantom power for condenser microphones, and integrated low-cut filters on mic inputs. This and many more benefits make the SCM268 an ideal mixer choice for smaller-scale applications that need affordable mixing solutions, including meeting rooms, houses of worship, live broadcasting, educational paging and PA, as well as sound system rental companies.

Get half a dozen transformers and more in a half-rack space with the SCM268. This mixer boasts 6 built-in transformers, 4 transformer-balanced XLR mic-level inputs, 1 transformer-balanced XLR mic/line output, 1 unbalanced aux level output (Phono connector), 5 unbalanced aux level inputs (Phono connectors), and 1 internal low stray field, toroidal power transformer. The SCM268’s transformers protect your signals from RF interference while preventing ground loops for ultra-quiet mixer operation. Meanwhile, the internal toroidal power transformer dispenses with any need for annoying "wall wart."

Other features of the SCM268 include an LED peak output meter and an included IEC power cord connector. The entire unit is enclosed in rugged housing and features durable rack mounting hardware for permanent installation. It fits into a half-rack space that makes it easy to fit into any size of audio setup.

More about the SCM Series from Shure

Shure mixers are built on over a generation of experience and expertise. They are specifically designed and precision-engineered to provide installed sound applications unparalleled confidence in performance. The SCM Series of mixers continues this Shure standard with an emphasis on combining quality with affordability.

Shure SCM268 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
• Unit fits into a half-rack space and includes all the necessary rack mounting hardware

• SCM268 4-Channel Microphone Mixer1

• Frequency Responseat 1 kHz
• Mic/Line Switch150 Hz to 20 kHz ±2 dB
• Aux Input20 Hz to 20 kHz ±2 dB
• Low-Cut Filter -6 dB/octave below 80 Hz
• Total Harmonic Distortion
  • 1 kHz, +4 dBu out, mix output (MASTER) at +0 dB
  • <0.25%
• Equivalent Input Noise (150Ω balanced source, A-Weighted) -130 dBV
• Output Noise channel (controls full counterclockwise, A-Weighted)
  • Master full counterclockwise -107 dBV
  • Master full clockwise -73 dBV
• Common Mode Rejection >80 dB, at 1 kHz
• PolarityAll 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; Line and Aux inputs by signals up to +28 dBV
• Phantom Power 12 Vdc open-circuit through 680 Ω resistors
• Operating Voltage
  • SCM268 100–200 V AC, 50/60 Hz, 60 mA
  • SCM268E 220–240 V AC, 50/60 Hz, 30 mA
• Temperature Range
  • Operating Temperature 20° –95° F (-7° – 35° C)
  • Storage Temperature -20° –165° F (-29° – 74° C)
• Dimensions1.72 x 8.6 x 6.37 inches (44 x 218 x 162 mm)
• Net Weight2 lbs, 10 oz (1.2 kg)