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Shure SCM268 4-Channel Microphone Mixer

BH #SHSCM268 • MFR #SCM268
23 reviews
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Shure SCM268 4-Channel Microphone Mixer
Key Features
  • F/ Sound Reinforcement
  • Rack-Mountable
  • Compact Design
  • 4 XLR Mic Inputs
The Shure SCM268 4-Channel Microphone Mixer offers simplicity and routing flexibility in a convenient, compact, and rugged enclosure. The SCM268 features 4 high quality transformer-balanced XLR inputs and mic/line level switchable XLR output. Transformer balanced I/O provides maximum audio gain, minimizing hum and line noise. Two stereo paired (4 mono) RCA inputs except line level signal from consumer audio devices such as CD and cassette players, DVD players, VCR's etc.

Also provided is an additional, independent AUX line level input with level control via a single RCA connector. Six sealed rotary pots provide level control for mic channels 1 through 4, AUX input channel and Master. The SCM268 also provides 12V phantom power for condenser microphones.

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Shure SCM268 Overview

The Shure SCM268 4-Channel Microphone Mixer offers simplicity and routing flexibility in a convenient, compact, and rugged enclosure. The SCM268 features 4 high quality transformer-balanced XLR inputs and mic/line level switchable XLR output. Transformer balanced I/O provides maximum audio gain, minimizing hum and line noise. Two stereo paired (4 mono) RCA inputs except line level signal from consumer audio devices such as CD and cassette players, DVD players, VCR's etc.

Also provided is an additional, independent AUX line level input with level control via a single RCA connector. Six sealed rotary pots provide level control for mic channels 1 through 4, AUX input channel and Master. The SCM268 also provides 12V phantom power for condenser microphones.

Quality Inputs
Features 4 balanced XLR mic preamps resulting in high input gain and low noise floor.
AUX Line Inputs
4 additional line level inputs via RCA connectors are provided. These inputs are perfect for adapting consumer level devices such as CD and cassette players, audio from VCR's etc.
12V Phantom Power
The SCM 268 provides 12V phantom power for condenser microphones.
Compact Rugged Design
The SCM 268's rugged, compact design provides maximum portability without sacrificing the ruggedness.
UPC: 042406054935

Shure SCM268 Specs

Inputs
4 - Balanced XLR Microphone
2 - Stereo (L/R) RCA line inputs
Output
1 - Balanced XLR output (mic/line level)
1 - AUX unbalanced RCA Phono
Link Input/Output
No
Impedance
Input
MIC (XLR): Designed for use with 19-600 ohm load, 1.2k ohms actual, -5dBV clipping level
AUX: Designed for use with - / < 2k ohm load, 21k ohms actual, >28 dBV clipping level
Outputs
MIC: Designed for use with low-Z inputs, 0.2 ohms actual, -21 dBV clipping level
LINE: Designed for use with > 600 ohms, 72 ohms actual, +18 dBV clipping level
AUX: Designed for use with > 2k ohms, 870 ohms actual, +7dBV clipping level
Gain
Low-Impedance Mic Input (150 ohms): MIC 32dB, LINE 72dB, AUX 60dB - Outputs
Line Input: MIC -9dB, LINE 31dB, AUX 19dB - Outputs
Stereo Input: MIC -5dB, LINE 35dB, AUX 23dB - Outputs
Hum & Noise
Equivalent Input Hum and Noise: -124 dBV (150 ohm source; 22Hz to 22kHz)
Output Hum and Noise: (22 Hz to 22kHz; channel controls full counterclockwise)
Master full counterclockwise -92dBV
Master full clockwise -70dBV
Metering
6-segment LED meters
Controls
Sealed Rotary Potentiometers: MIC 1-2, STEREO 1-3 and MASTER gain controls. BASS and TREBLE control.
DIP Switches
Phantom Power
12 Vdc open-circuit through 340 ohm series resistors
Operating Temperature
Operating: -7 to 49 degrees C (20 to 120 degrees F)
Storage: -29 to 74 degrees C (-20 to 165 degrees F)
Power
SCM268: 100 - 120 Vac, 50/60 Hz, 60mA
SCM268E: 220 - 240 Vac, 50/60 Hz, 30mA
Dimensions
1.72 x 8.60 x 6.37 in. (43 x 218 x 162mm)
Weight
2.62 lbs (1.20 kg)
Packaging Info
Package Weight
5.465 lb
Box Dimensions (LxWxH)
13.8 x 10.1 x 3.5"

Shure SCM268 Reviews

Works fine for depositions - not perfect though.

By Antonio
Rated 4 out of 5
Date: 2024-05-09

Yes, it did improve my sound from using a Zoom H6. Meters could be more accurate though I still use the H6 to record the audio, so I get a 2nd reading there by using a XLR cable splitter - one to my camera and one to the Zoom. Having a limiter in this unit would make it almost perfect - I'd pay another $150 for that. Although, the audio doesn't seem to ever clip when set to around 50% for each channel and master with my lavaliers.

Repurchase

By Chuck
Rated 5 out of 5
Date: 2018-12-03

This is great and fool proof . I needed more inputs and with the ablity to piggyback it was perfect. Works very good for interviews and meetings.

See any errors on this page?

Is there a way to hook up a microphone into the ...

Is there a way to hook up a microphone into the auxiliary in? legal deposition video Sometimes you need another input for phone conferencing Will it require a mic amp? Anyone out there making this work?
Asked by: Robert
thank you for your question. In order to add an additional mic into the auxiliary you would need an additional mic preamp.
Answered by: Anthony
Date published: 2019-04-30

Can this Shure SCM262 connected to a ATEM mini ...

Can this Shure SCM262 connected to a ATEM mini for simultaneous video and audio webcasting?
Asked by: Larry
Yes, you can use a cable like BH #KOXRSM015B to go from the XLR Mic/Line output on the Shure SCM268 4-Channel Microphone Mixer into one of the mic inputs on the Blackmagic ATEM Mini. You can use the ATEM Mini controller software to choose whether you want the mixer to come into the ATEM Mini at mic level, or line level.
Answered by: David M
Date published: 2026-02-10

question

Does this include the power cord to the mixer?
Asked by: Anonymous
The Shure SCM268 utilizes a 3 pin IEC power connection with power cord included.
Answered by: Jeff P.
Date published: 2018-08-27

Will this work with four Shure CVB-B/O Boundary ...

Will this work with four Shure CVB-B/O Boundary Condenser Microphones?
Asked by: Alfas
Should work just fine.
Answered by: Jonathan
Date published: 2021-10-19

Has anyone received one of these with the black ...

Has anyone received one of these with the black button for phantom / line / mic not there? Mine has a hole where you insert a pointy object to press to engage. Is this a QC issue or did shure remove to insure it’s not pressed by accident? Thx for your time in advance.
Asked by: Robert
This unit has recessed switches for line/mic level and also for phantom power on/off. Perhaps the rubber covers for those switches are missing on your mixer.
Answered by: Steven M
Date published: 2021-01-18

12V phantom power to the mic doesn't seem to be ...

12V phantom power to the mic doesn't seem to be enough for my Shure condenser mic, do you recommend a 48v phantom power mixer model or a pre-amp addon?
Asked by: Alfas
As most condenser mics require 48V as opposed to 12, yes, there should be a 48V source in front of the Shure SCM268 4-Channel Microphone Mixer to connect a condenser mic. A simple solution would be BH #ROMP222 Rolls MP222 Studio Pro Dual-Channel Microphone Preamplifier.
Answered by: Matt Z
Date published: 2021-11-03

What kit do I need to buy to rack mount two of ...

What kit do I need to buy to rack mount two of these side by side?
Asked by: Brian
This mixer comes with the proper Rack mount hardware to rack two side by side.
Answered by: leticia
Date published: 2021-03-01

What cable can I use with this device to output ...

What cable can I use with this device to output the audio to a PC mic port?
Asked by: Alfas
I believe what you are looking for is the Kopul XRSM 3-Pin XLR Female to 3.5mm RA Stereo Mini-Plug Cable (1.5') Refer to BH #KOXRSM015B MFR #XRSM-015B
Answered by: NK
Date published: 2021-11-22
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