Russound R275HC User Manual
R-Series
R275HC
2-Channel
Power Amplifier
User’s Manual
2
“WARNING” “ TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.”
“CAUTION” “ TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
COVER. NO USER - SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an equilateral
triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the products enclosure that
may be of sufficient magnitude to constitute a risk of electric
shock to persons.
The exclamation point within an equilateral triangle is intended
to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the appliance.
SAFETY INSTRUCTIONS
1. Read Instructions - All the safety and operating instructions should be read
before the appliance is operated.
2. Retain Instructions - The safety and operating instructions should be retained
for future reference.
3. Heed Warnings - All warnings on the appliance in the operating instructions
should be adhered to.
4. Follow Instructions - All operating and user instructions should be followed.
5. Water and Moisture - Do not use this appliance near water, for example, near
a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a
swimming pool. Do not expose the appliance to dripping or splashing, and
do not place on the appliance objects filled with liquids such as vases. Do not
touch the amplifier with wet hands. Do not handle the amplifier or power cord
when your hands are wet or damp. If water or any other liquid enters the
amplifier cabinet, take the amplifier to qualified service personnel for inspection.
6. Cleaning - The appliance should be cleaned only as recommended by the
manufacturer. From time to time you should wipe off the front and side panels and the cabinet with a soft cloth. Do not use rough material, thinners,
alcohol or other chemical solvents or cloths since this may damage the finish
or remove the panel lettering.
7. Ventilation - The appliance should be situated so that its location or position
does not interfere with its proper ventilation. For example, the appliance
should not be situated on a bed, sofa, rug, or similar surface that may block
the ventilation openings or, placed in a built - in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. Place the unit in a well-ventilated location, leaving at least 2 inches (5
cm) of clearance on all sides, top and rear of unit for air flow. If ventilation is
blocked, the unit may overheat and malfunction.
8. Heat - The appliance should be situated away from heat sources such as radiators, 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 should be routed so that they
are not likely to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs, receptacles, and the point
where they exit from the appliance.
11.Power Sources - The appliance should be connected to a power supply only
of the type described in the operating instructions or as marked on the appliance.
12.Main Power Disconnect - The power switch is a single-pole switch. When the
switch is in the “Off” position, the appliance is not completely disconnected
from the main power. The main power plug is used as the disconnect device
and shall remain readily operable. When installing the product, ensure that the
plug is easily accessible.
13.Non-use Periods - The power cord of the appliance should be unplugged from
the outlet when left unused for a long period of time.
14.Attachments - Only use attachments/accessories specified by the manufacturer.
15.Carts and Stands - The appliance should be used only with
a cart or stand that is recommended by the manufacturer.
An appliance and cart combination should be moved with
care. Quick stops, excessive force and uneven surfaces
may cause the appliance and cart combination to overturn.
16.Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.
17.Location of the Amplifier - Do not mount this unit under a kitchen cabinet. Do
not expose the amplifier to direct sun light or heating units as the amplifier
internal components’ temperature may rise and shorten the life of the components. Avoid damp and dusty places.
18.Object and Liquid Entry - Care should be taken so that objects do not fall and
liquids are not spilled into the enclosure through the openings.
19.Servicing - The user should not attempt to service the appliance beyond that
described in the operating instructions. All other servicing should be referred
to qualified service personnel.
20.Damage Requiring Service - The appliance should be serviced by qualified
service personnel when:
A. The power - supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally; or
E. The appliance has been dropped or the enclosure is damaged.
IMPORTANT SAFEGUARDS
3
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 specific 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 powered 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 protection 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.
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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R275HC Side View
Rack Ear
Screw Holes
+
+
Rack Ear
Front View
Rack Ear
Side View
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