R290DS
Dual Source Power Amplifier
Installation Manual
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TABLE OF CONTENTS
Safety Instructions .................................................................................................................. 2
Product Overview .................................................................................................................. 4
Front and Rear Panels ............................................................................................................ 5
System Configuration - Stereo Mode............................................................................... 6
System Diagram - Stereo Mode.......................................................................................... 7
System Configuration - Bridged Mode............................................................................ 8
System Configuration - External Volume Control........................................................ 9
Technical specifications ......................................................................................................10
Warranty ...................................................................................................................................11
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Russound R290DS Installation Manual
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pRODUCT OVERVIEW
Introduction
Protection Circuitry
The Russound R290DS is a 2-channel 90 watt dual source power amplifier with
auto-source switching. It features Primary and Secondary audio line inputs with
a loop out to another zone, receiver, or device from the Primary source. A signal
only available as a speaker input can be connected and assigned as either the
primary or secondary source.
Special circuitry has been designed into the amplifier to safeguard 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.
Thisamplifiercanbeusedforpowerupgradesinspecificzones,forlargespeaker
selector or volume control systems and for long series-parallel speaker runs
(e.g., large outdoor zones).
Rack Mounting
The R290DS is rated at 90 watts per channel into 8 ohms, and 110 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 R290DS is rated at 220 watts of power into a single 8 ohm load. Each
amplifier output channel incorporates robust protection circuitry for safety and
reliability under extreme circumstances.
The R290DS amplifier can be rack mounted using the included rack-mount
ears and hardware to attach the ears to the amplifier. The amplifier will take two
rack spaces with the feet removed.
If mounted in a rack , one open rack space above and below is recommended
to allow for ventilation and heat dissipation.
The 12V Trigger In/Out allows the R290DS to be activated by other electronics
or to activate other electronics via a 3.5 mm mini phone plug cable.
Rack Ear
Screw Holes
Thermal Protection
All Russound amplifiers are designed with special circuitry to safeguard the
amplifier under a thermal overload condition. Thermal protection mode will
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. In thermal protection mode the
amplifier will automatically stop output and the status indicator LED will go OFF.
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.
Rack Ear
Side View
Rack Ear
Front View
Side View
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FRONT AND REAR pANEL
Status Indicator LED
Red - Standby
Green - Active
Orange -Short Circuit Protection
Primary Input/Output
Stereo / Bridge Switch
Secondary Input
Power Switch
Left and Right Channel Controls
12V Trigger In / Out
Delay Time
Speaker Output
Power Inlet & Fuseholder
Voltage Selector
Speaker Level Line Input Switch
Speaker Level Input (Screw Down Connector)
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SYSTEm CONFIGURATION - STEREO mODE
The R290DS has dual source capability. If two sources are used, connect the
source you want to have priority to the Primary input and the other source to
the Secondary input.
Speaker Level Signal
If either of the sources is only available as a speaker level signal, connect it to
the Speaker In terminals, using the screw down terminal block and observing
proper polarity. Only one set of speaker level inputs can be utilized and assigned
by the selector switch.
Whenever the Primary source is active, that signal will take priority over the
distributed audio signal on the Secondary line. The signal is still active on the
Secondary line, and once the Primary audio signal is muted or turned off the
R290DS will automatically switch back to the Secondary audio signal.
Set the switch to Primary or Secondary.
Only one type of input (speaker or line) should be assigned to each line. For
typical connectivity, do not set speaker input switch to Primary and make
connections to the Primary line input.
Stereo Mode
Note: If there are two inputs assigned as Primary (Speaker and Line) the Line
input will take priority.
The R290DS can be configured as a power upgrade for specific zones, for
use with large speaker selectors, and for long parallel speaker runs (outdoor
zones)
1. Unplug the R290DS.
2. Set the Stereo/Bridge switch to Stereo.
Typical Connections
3. Connect the audio line output from a stereo preamplifier or source to
the left and right Primary input jacks of the R290DS. If the output is only
available as speaker level see Speaker Level Signal at right.
Speaker Input
/ Switch Position
Line Input
Audible Output
Primary /
Secondary
Primary if signal present
Secondary if no Primary signal
n/a
4. Connect the audio line output from the secondary source to the Secondary
input jacks in the same manner.
Secondary
/ Secondary
Primary if signal present
Secondary if no Primary signal
Primary
5. Connect your speakers to the terminals, observing proper polarity.
Primary
/ Primary
Primary if signal present
Secondary if no Primary signal
6. Restore power to the amplifier. Both channel levels can be adjusted with
the corresponding channel level adjustments.
Secondary
Connections for Unique Solutions
Dual source connections
Connect the source audio outputs to both Primary and Secondary inputs as
instructed above.
Speaker Input
Line Input
Audible Output
/ Switch Position
Primary Line Input if signal present
Speaker Input if no Primary Line signal
Secondary if no Primary Line or Speaker signal
Primary /
Secondary
Primary
/Primary
Set the delay with the DelayTime knob.The DelayTime adjustment determines
when the switch back to the Secondary signal will occur. Example: If the primary
source is a CD changer, increasing the delay time will prevent a switch back to
the secondary source while the disc is changing.
Primary Line Input if signal present
Secondary Line Input if no Primary signal
Speaker Input if no Line signal
Primary /
Secondary
Secondary
/Secondary
Note: This works with all incoming signals, line level or speaker level.
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SYSTEm DIAGRAm - STEREO mODE
CAA66 Multizone Controller
Line Out
RCA Cable
R290DS Ampliꢀer
Line Out
RCA Cable
Speaker Cables
Source
8 Ohm Speakers
Stereo Mode Configuration with Dual Sources
(CD player signal takes precedence)
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SYSTEm CONFIGURATION - BRIDGED mODE
Bridged Mode
In this mode both the left and right channels are combined for a higher power
mono output. For proper operation, the left channel adjustment should be set
to the center position to start and then adjusted appropriately from there. The
right channel adjustment is not applicable.
1. Unplug the R290DS.
2. Set the Stereo/Bridge switch to Bridge Mono.
3. Connect the line out from a preamplifier or source to the Left Primary input
jack of the R290DS. Do not connect any input to the right side, it will be
ignored.
4. Connect the negative lead (-) of the speaker cable to the R(+) terminal.
Connect the positive lead (+) of the speaker cable to the L(+) terminal. (See
the markings above the terminals on the rear panel). An 8 Ohm minimum
load is recommended.
5. Restore power to the amplifier.
R290DS Amplifier
(-) Negative Speaker Cable
(+) Positive Speaker Cable
Line out from Source
8 Ohm Speaker
Bridged Mode Configuration
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SYSTEm CONFIGURATION - ExTERNAL VOLUmE CONTROL
System Configuration with External Volume Control
The R290DS can be configured for large autoformer-based volume control
systems/speaker selectors.
R290DS Ampliꢀer
Line out from Source
S R E K A E P S
S R E K A E P S
S R E K A E P S
S R E K A E P S
Autoformer-based
Volume Control
8 Ohm Speaker
RUSSOUND
SPEAKERS
SPEAKERS
SPEAKERS
SPEAKERS
EZB-1SC Modular
Connecting Block
Configuration with Autoformer Volume Control
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TECHNICAL SpECIFICATIONS
R290DS Amplifier
Continuous Output Power: 90W per channel at 8 ohms
(<0.1% THD=N) @ 1kHz 110W per channel at 4 ohms
250W at 8 ohms, 2 channels bridged
Distortion THD+N: <0.3% from 20Hz to 20kHz for 90W into 8 ohms
<0.05% from 20Hz to 20kHz for 1W into 8 ohms
Signal-to-Noise Ratio: >110dB A-weighted
Channel Separation: > 70dB @ 1 kHz
Frequency Response: 20Hz to 20kHz +/- 0.3dB
Input Sensitivity: 70mV for 1W at 8 ohms
680mV for 90W at 8 ohms
Input Impedance: 47kohms Line Input
Voltage Gain: 32dB
Power Requirements: North American Model:
120VAC 60Hz 2.5A
IEC 320 type connector with 3 terminal detachable power cord.
Power Requirements: European Model:
230VAC 50Hz 1.2A
IEC 320 type connector with 3 terminal detachable power cord.
Dimensions: 17”W x 14”D x 4.125”H
(43 x 35.5 x 10.5 cm)
Weight: 17.2 lbs. (7.8 kg)
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WARRANTY
Warranty
Before returning a unit for repair, call Russound at (603) 659-5170 for a Return
Authorization number. Write this number on the shipping label and ship to:
The Russound R290DS Power Amplifier is fully guaranteed against all defects
in materials and workmanship for two (2) years from the date of purchase.
During this period, Russound will replace any defective parts and correct any
defect in workmanship without charge for either parts or labor.
Russound
ATTN: Service
5 Forbes Road
Newmarket, NH 03857
For this warranty to apply, the unit must be installed and used according to its
written instructions. If service is necessary, it must be performed by Russound.
The unit must be returned to Russound at the owner’s expense and with
prior written permission. Accidental damage and shipping damage are not
considered defects, nor is damage resulting from abuse or from servicing by an
agency or person not specifically authorized in writing by Russound.
Due to continual efforts to improve product quality as new technology and
techniques become available, Russound/FMP, Inc. reserves the right to revise
system specifications without notice.
This Warranty does not cover:
•
Damage caused by abuse, accident, misuse, negligence, or improper
installation or operation
•
•
•
•
Power surges and lightning strikes
Normal wear and maintenance
Products that have been altered or modified
Any product whose identifying number, decal, serial number, etc. has been
altered, defaced or removed.
Russound sells products only through authorized Dealers and Distributors
to ensure that customers obtain proper support and service. Any Russound
product purchased from an unauthorized dealer or other source, including
retailers, mail order sellers and online sellers will not be honored or serviced
under existing Russound warranty policy. Any sale of products by an
unauthorized source or other manner not authorized by Russound shall void
the warranty on the applicable product.
Damage to or destruction of components due to application of excessive
power voids the warranty on those parts. In these cases, repairs will be made
on the basis of the retail value of the parts and labor. To return for repairs, the
unit must be shipped to Russound at the owner’s expense, along with a note
explaining the nature of service required. Be sure to pack the unit in a corrugated
container with at least three (3) inches of resilient material to protect the unit
from damage in transit.
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R290DS
Dual Source Power Amplifier
Installation Manual
©2008 Russound. All rights reserved.
Russound, Inc.
All trademarks are the property of their respective owners.
Specifications are subject to change without notice.
Russound is not responsible for typographical errors or omissions.
5 Forbes Road, Newmarket, NH 03857
tel 603.659.5170 • fax 603.659.5388
28-1318 07/08/08
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