SM Pro Audio M-Patch 2.1: Passive Monitor Controller with Subwoofer Connection - Manual (Page 4)

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The M-Patch 2.1 is a multi-channel stereo attenuator using passive circuitry designed
for users wishing to work without outboard mixers or bit-degrading digital volume at-
tenuators. The M-Patch 2.1 provides stereo level control solutions for any monitor or
distributed sound application. Featuring two rotary controls for precise two x stereo
channel level adjustments, and housed in a desktop or rack-mountable sized chas-
sis, the M-Patch 2.1 main volume controller is designed from discrete 0.5% resistors
with a switched mechanism which is far more accurate then the standard variable
resistors which are used in other products especially at lower volumes. It features
the ability to return the signal from the subwoofer back into the M-Patch 2.1 and
control it, along with the left/right monitors, from the master volume attenuator. Plus
A dedicated mute switches make it easy to A/B mixes with or without the subwoofer.
2. THE DESIGN CONCEPT
2.1 High quality components and design
The philosophy behind SM ProAudio products guarantees a no-compromise circuit
design and employs the best choice of components.
2.2 Inputs and outputs
All inputs and outputs are secured firmly to the exterior chassis housing. This en-
sures robust quality and confidence in performance under all conditions.
3. Installation
Your SM Pro Audio M-Patch 2.1 was carefully packed in the factory and the packag-
ing was designed to protect the unit from rough handling. Nevertheless, we recom-
mend that you carefully examine the packaging and its contents for any signs of
physical damage, which may have occurred in transit.
If the unit is damaged, please do not return it to us, but notify your dealer and the
shipping company immediately, otherwise claims for damage or replacement may
not be granted. Shipping claims must be made by the consignee.
3.1 Desktop or Rack-mount installation
The SM Pro Audio M-Patch 2.1 can sit comfortably on your desktop. We also include
a versatile pair of rack mounting ears.
3.2 Audio input Connections
The M-Patch 2.1 features four (4) separate input channels named “Aux” & “Balan-
aced”. The connections are found on the rear panel. (Input section on rear panel of
M-Patch 2.1).