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INTRODUCTION

The Russound R275HC is a 2-channel high-current power
amplifier capable of driving low impedance loads and
incorporates selectable volume control protection circuitry. 

This amplifier can be used for power upgrades in specif-
ic zones, for large speaker selector or volume control
systems and for long series-parallel speaker runs 
(e.g., large outdoor zones).

The R275HC is rated at 75 watts per channel into 8
ohms and 100 watts into 4 ohms. With the
Stereo/Bridge Mono switch in the Bridge Mono position,
both amplifier channels are combined for a higher pow-
ered mono output. In Bridge mode the R275HC is rated
at 200 watts of power into a single 8-ohm load. All this
power is backed by a high output toroidal transformer.
Each amplifier output channel incorporates robust pro-
tection circuitry for safety and reliability under extreme
circumstances.   

FRONT PANEL

RACK MOUNTING

The R275HC amplifier can be rack mounted using the included rack-mount ears and hardware to attach the ears to
the amplifier. The amplifier will take 2 rack spaces with the feet removed.

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R275HC Side View

Rack Ear
Front View

Rack Ear
Side View

Rack Ear
Screw Holes

R275HC AMPLIFIER

Tri-color Indicator LED:

The LED will illuminate red when the power is on and the amplifier is in standby,

green when the amplifier is active and orange when in short circuit protection.

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Summary of Contents for R275HC

Page 1: ...R Series R275HC 2 Channel Power Amplifier User s Manual ...

Page 2: ...entilation is blocked the unit may overheat and malfunction 8 Heat The appliance should be situated away from heat sources such as radi ators heat registers stoves or other appliances including amplifiers that produce heat 9 Grounding or Polarization Precautions should be taken so that the grounding or polarization means of an appliance is not defeated 10 Power Cord Protection Power supply cords s...

Page 3: ...no output In Bridge mode the R275HC is rated at 200 watts of power into a single 8 ohm load All this power is backed by a high output toroidal transformer Each amplifier output channel incorporates robust pro tection circuitry for safety and reliability under extreme circumstances FRONT PANEL RACK MOUNTING The R275HC amplifier can be rack mounted using the included rack mount ears and hardware to ...

Page 4: ...gnal to another amplifier in the system Speaker A B Outputs The A and B speaker out puts are in parallel to the amplifier output The mini mum load in stereo mode is 4 ohms This can be used to drive up to 2 pairs of 8 ohm speakers or 1 pair of 4 ohm speakers The minimum load imped ance for bridged mode operation is 8 ohms Speaker B only Stereo Bridge Mono Switch Sets the pair of amplifier channels ...

Page 5: ... ry 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 ...

Page 6: ...ency of the system CAM6 6 RCA Cable Speaker Cable R275HC Amplifier CAM6 6T Controller Speaker Cable 8 ohm Speaker 8 ohm Speaker R275HC AMPLIFIER The R275HC can also be configured as a power upgrade for specific zones for use with large speaker selectors and for long series parallel speaker runs e g outdoor zones INPUT EXPANSIONS SPEAKERS SPEAKERS SPEAKERS SPEAKERS RUSSOUND INPUT EXPANSIONS SPEAKER...

Page 7: ... it must be performed by Russound The unit must be returned to Russound at the owners expense and with prior written permission Accidental damage and shipping damage are not considered defects under the terms of the warranty Russound assumes no responsibility for defects resulting from abuse or servicing performed by an agency or person not specifically authorized in writing by Russound Damage to ...

Page 8: ...5 Forbes Rd Newmarket NH 03857 USA Tel 603 659 5170 Fax 603 659 5388 e mail tech russound com 28 1167 03 22 05 R Series R275HC 2 Channel Power Amplifier User s Manual ...

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