Rack Mounting; Thermal Protection; Protection Circuitry; Product Overview - Russound R1250MC Installation Manual

Introduction
The Russound R1250MC is a 12-channel power amplifier and is ideal for use
as the main amplifier in home theater and distributed audio systems. The 12
channels are arranged in pairs to provide amplification for six stereo zones. The
R1250MC provides an array of useful features such as bridge mode operation,
independent zone triggering, bus inputs and multiple speaker outputs per
zone to meet a wide variety of applications and configurations.
The R1250MC is rated at 50 watts per channel into 8 ohms and 80 watts
per channel into 4 ohms. With the Stereo/Bridge Mono switch in the Bridged
Mono position, both channels in the zone are combined for a higher powered
mono output. In bridged mode, the R1250MC is rated at 140 watts of power
into a single 8 ohm load. All this power is backed by three high output torodial
transformers. Each amplifier output channel incorporates robust protection
circuitry for safety and reliability under extreme circumstances.

Thermal Protection

All Russound amplifiers are designed with special circuitry to safeguard the
amplifier under a thermal overload condition. Thermal protection mode can
only engage when the unit has been run at high volume for extended periods
of time without adequate ventilation and/or when speaker impedances are
below the minimum levels for the amplifier. If this fault occurs, turn off the
amplifier, and check that the speaker impedance rating is above the minimum
rating. Also check for adequate ventilation around the amplifier and make
adjustments if necessary.
Once the unit has cooled to safe operating temperatures, the amplifier may
be powered back on.

Protection Circuitry

All Russound amplifiers are designed with special circuitry to safeguard the
amplifier under a short-circuit condition. A faulty speaker can also cause a short
circuit condition. The front panel LED illuminates orange when the amplifier is
in short circuit protection. If this fault condition occurs, turn off the amplifier
and check speakers for short circuit conditions when appropriate.
Rev. 3

Rack Mounting

The R1250MC amplifier can be rack mounted using the included rack-mount
ears and hardware to attach the ears to the amplifier. The amplifier will take
three rack spaces with the feet removed.
R1250MC Side View
Russound R1250MC Installation Manual

PROdUCT OVERVIEW

Rack Ear
Screw Holes
Rack Ear
Rack Ear
Front View Side View
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