SM Pro Audio M-Patch 4M: Passive Controller/Switcher with Talkback - Manual (Page 3)

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Foreward
Dear Customer, Thank you very much for expressing your confidence in SM Pro
Audio products by purchasing this unit. The M-Patch 4M was designed to be a com-
prehensive studio monitor controller for home, project and professional studios,
sound equipment rental companies, repair centers, schools and fixed installations—
in short, virtually any and all venues where audio products are used. Drawing on
years of hands-on experience in the audio industry and valuable suggestions from
our customers, our engineers have developed a product that we are certain will more
than meet your expectations. As with all SM Pro Audio equipment, the M-Patch 4M
was designed to provide you with superb performance, excellent technical specifica-
tions, and uncompromising audio quality at an extremely affordable price.
Regards, SM Pro Audio
IMPORTANT: High output volumes may damage your ears, your monitors, and/or your
headphones. Turn down the LEVEL controls before you switch on the M-Patch 4M.
INSTALLATION
Your SM Pro Audio M-Patch 4M was carefully packed at 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 that 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.
PLACEMENT
The SM Pro Audio M-Patch 4M utilizes an electronic circuit. Be sure that there is
enough air space around the unit for cooling. To avoid overheating, please do not
place the unit on high temperature devices, such as power amplifiers, or near other
units, such as wireless devices, that may transmit high frequencies.
Mains voltage
The M-Patch 4M can be used with voltages ranging from 100V AC to 240V AC. Please
make sure that you have selected the correct voltage range on the back of the unit,
and that the required fuse setting is correct, before switching the unit ON. Any damage
occurring as a result of incorrect voltage selection may not be covered under warranty.
M-Patch 4m OVERVIEW
The M-Patch 4M is a multichannel passive analog attenuator designed to provide soni-
cally transparent level control over a variety of stereo audio signals. It allows you to con-
nect multiple input signals, route them to various destinations, and control their levels
via a series of rotary volume attenuators. The Master Attenuator utilizes discrete 0.5%
resisters with a switched mechanism—a design that offers superior accuracy over stand-
ard variable resistor designs, especially at critical low volume levels.