Coleman Audio M3PHMKIII - Monitor Controller

Passive Control Room Monitor Selector with 4-input Source Selector, 3 Balanced Outputs, L/R Mute Switches, Mono Button, Polarity Reversal, and 47-position Stepped Attenuator
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Coleman Audio M3PHMKIII - Monitor Controller image 1
Coleman Audio M3PHMKIII - Monitor Controller image 1

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Coleman Audio M3PHMKIII - Monitor Controller
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Passive Monitor Controller for 3 Speaker Pairs

Accurate mixing requires accurate monitoring. And with a 4-gang, 47-position stepped attenuator that's accurate within 0.05dB, the Coleman M3PHMKIII promotes a balanced listening environment for all your sources. This completely passive, uncolored controller lets you switch between three sets of speakers to ensure your mix translates to a wide range of playback systems. L/R mute switches let you isolate stereo material and identify playback issues. And Mono and polarity switches that let you test mono compatibility will have your stereo drums and guitars sounding their best. If you're looking for a complete DAW monitoring solution in a compact 1U chassis, Sweetwater recommends taking the Coleman Audio M3PHMKIII for a spin.

Coleman Audio: studio solutions that don't get in the way

Glenn Coleman's controllers, interfaces, and meters are the result of his 40+ years of technical experience in the audio industry, having worked for the likes of MCI, Atlantic Studios, and Martin Audio. Coleman Audio's dead-simple broadcasting and studio solutions are built with three objectives: to last, to be transparent, and to fill a need for end users. These solutions range from the off-the-line RED48 summing console and MS8A stereo monitor switcher to any number of made-to-order products for customers. If you're looking for quality audio solutions that won't stand in the way of your sound or creativity, think Coleman Audio.

Coleman Audio M3PHMKIII Monitor Controller Features:
  • DAW/hardware control room monitor controller
  • Replicates the master section on a console
  • Completely passive design - won't color your signal path
  • Switches between 3 pairs of speakers for playback translation
  • Accepts stereo inputs from up to 4 sources
  • 47-position, 4-gang stepped master control (+/- 0.05dB) promotes a balanced stereo listening environment
  • Balanced XLR connectors minimize noise and maximize output
  • L/R mute switches let you audition speakers independently
  • Mono switch (L minus R) collapses audio to test for mono compatibility
  • Polarity reversal switch highlights speaker phase issues
  • Mono + polarity nulls mono material to review side content
  • 1U chassis is rack compatible
  • 8-ohm headphone output lets you monitor silently or feed a headphone amp
  • Internal switch makes output #3 fixed to feed VU meters or a cue system
  • 115-volt/230-volt switch on power supply circuit board
Get the most from your monitoring environment with the Coleman Audio M3PHMKIII monitor controller!

Additional Media

Studio Monitor Buying Guide

Tech Specs

Input Channels 8
Output Channels 6
Analog Inputs 8 x XLR (4 stereo inputs)
Analog Outputs 6 x XLR (3 stereo outputs)
Headphones 1 x 1/4"
Form Factor Rackmount
Height 1.75"
Width 19"
Depth 10"
Weight 12 lbs. (Shipping Weight)
Manufacturer Part Number M3PH MKIII

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See also: Monitor Switches, Coleman Audio, Coleman Audio Monitor Management