Russound Stereo Amplifier DPA 12 User Guide

DPA-1.2  
Instruction Manual  
2 Channel Amplifier  
with Auto A/B Selector  
Conforms to  
UL 6500  
Certified to  
CSA C22.2 No1-94  
NEWDMAPRAKE-T,1N.2H USA  
68835  
Russound  
DPA-1.2  
Tested to Comply  
with FCC Standards  
FOR HOME OR OFFICE USE  
POWER  
NEWMARKET  
, NH USA  
DP  
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SERIAL #  
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68835  
Russound  
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DP  
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ith FCC Standards  
T
ested to Comply  
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FOR  
H
OM  
PO  
E
OR  
O
FFICE USE  
W
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VIDEO  
INPUT  
SENSING  
GAIN  
D
E
LINE INPUT  
SENSING  
12V  
TRIG  
S
IG  
N
E
D
L
R
IN  
T
H
E
DELAY  
U
S
A
INPUT  
5
1
SE  
R
IA  
L
#
L
4
2
3
12VTRIG  
WARNING : SHOCK  
HAZARD – DO NOT OPEN  
OUT 100mA  
MADE IN  
R
T
A
IW  
AN  
AVIS : RISQUE DE CHOC  
ELECTRIQUE – NES PAS  
OUVRIR.  
SPEAKER AOUT  
AMPLIFIED INPUT  
* FOR BRIDGED OPERATION  
SEE MANUAL  
SENSING  
AC  
120V  
60Hz  
1.5A~  
DEFAULT  
SPEAKER BOUT  
AMPLIFIED INPUT  
 
14. Non-use Periods - The power cord of  
the appliance should be unplugged  
from the outlet when left unused for a  
long period of time.  
15. 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.  
Precautions  
1. Do Not Touch The DPA-1.2 With Wet  
Hands. Do not handle the DPA-1.2 or  
power cord when your hands are wet  
or damp. If water or any other liquid  
enters the DPA-1.2 cabinet, take the  
DPA-1.2 to qualified service personal  
for inspection.  
16. Damage Requiring Service - The appli-  
ance should be serviced by qualified  
service personnel when:  
2. Location of the DPA-1.2 - Do not  
expose the DPA-1.2 to direct sun light  
or heating units as the DPA-1.2 inter-  
nal components temperature may rise  
and shorten the life of the compo-  
nents. Avoid damp and dusty places.  
3. Care – 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.  
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.  
17. Servicing - The user should not  
attempt to service the appliance  
beyond that described in the operat-  
ing instructions. All other servicing  
should be referred to qualified service  
personnel.  
Conforms to  
UL 6500  
Certified to CSA  
C22.2 Nol-94  
18. Avoid using a telephone (other than  
cordless type) during an electrical  
storm. There may be a remote risk of  
electric shock from lightning.  
Russound  
DPA-1.2  
19. Do not use the telephone to report a  
gas leak near the leak.  
Tested to Comply  
with FCC Standards  
FOR HOME OR OFFICE USE  
Contents  
1. Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
3. Possible System Configuration . . . . . . . . . . . . . . . . . . . 4  
4. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
5. Back Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . 6  
6. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
7. Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
3
 
2. INTRODUCTION  
Congratulations on your recent purchase of the Russound DPA-1.2  
two-channel amplifier. The DPA-1.2 is a high-current, high-quality  
amplifier, which includes automatic A/B switching. The DPA-1.2  
two-channel amplifier will amplify a source at the sensing line  
input or the sensing speaker level input. Switching between a  
default audio source and a local source, the DPA-1.2 is ideally suit-  
ed for those applications that require automatic switching and  
amplification. The DPA-1.2 power output per channel is 35 watts  
per channel into 8-Ohms, and 45 watts into 6-Ohms. Bridged out-  
put provides 70 watts of power into 8-Ohms. Each amplifier output  
channel incorporates thermal, and short circuit protection and  
Russounds unique Dynamic Clipping Sensor that allows for better  
headroom and volume without clipping or distortion.  
The Russound DPA-1.2 amplifier is built with pride. Fidelity,  
Reliability and Quality are the primary objective. Russound prod-  
ucts are guaranteed to provide years of enjoyment.  
3. POSSIBLE SYSTEM CONFIGURATIONS  
The DPA-1.2 can be used as a single-source two-channel zone  
amplifier, or as a local-source amplifier that automatically switches  
between a default source (such as a whole-house audio distribution  
system) and a local source (such as a television set).  
4
 
LINE OUTPUTS  
VIDEO  
LEFT  
AMPLIFIED  
OUTPUT  
RIGHT  
TO ROOM  
SPEAKERS  
VIDEO  
INPUT  
SENSING  
GAIN  
LINE INPUT  
12
TRIG  
L
R
SENSING  
DELAY  
INPUT  
5
1
L
4
2
3
12VTRIG  
WARNING : SHOCK  
HAZARD DO NOT OPEN  
OUT 100mA  
R
AVIS : RISQUE DE CHOC  
ELECTRIQUE NES PAS  
OUVRIR.  
SPEAKER AOUT  
AMPLIFIED INPUT  
* FOR BRIDGED OPERATION  
SEE MANUAL  
SENSING  
AC  
120V  
60Hz  
1.5A~  
DEFAULT  
SPEAKER BOUT  
AMPLIFIED INPUT  
AMPLIFIED INPUT  
FROM AUDIO  
DISTRIBUTION SYSTEM  
5
 
4. FRONT PANEL  
Power Switch: Turns on the main power for the ampli-  
fier. When the power is on, the LED will be illuminated.  
POWER  
5. BACK PANEL CONNECTIONS  
LINE INPUT  
SENSING  
Line Input: This line input is a sensing  
input that will activate the DPA-1.2  
L
when an audio signal is present. When  
there is no audio, the amplifier will go  
into standby or default back to the  
R
whole-house amplified signal if playing.  
AMPLIFIED INPUT  
Speaker Level Input: The speaker level input is a  
sensing input that will automatically switch the DPA-  
1.2 from the default input to the speaker level input.  
This input would be used in place of the line audio  
input. An amplified signal from a smaller amplifier or  
television can be amplified by the DPA-1.2 for a  
cleaner, more dynamic sound.  
SENSING  
DEFAULT  
Gain Controls: Left and Right gain con-  
AMPLIFIED INPUT  
trols independently adjust the sound  
GAIN  
L
R
level for each channel. When in the  
bridge mode, only the right control  
is used.  
Stereo / Mono Switch: The Stereo /  
Mono switch selects stereo or mono for the speaker  
outputs. In the Mono position, each Left and Right  
output is Mono. The Mono portion is also used for  
bridged operation.  
STEREO  
BRGD *  
MONO  
Video Input: The Video Input is a sensing input that  
will activate the DPA-1.2 when a video  
signal is present. When there is no  
video, the amplifier will go into standby  
or default back to the whole-house  
amplified signal if playing.  
VIDEO  
INPUT  
SENSING  
6
 
Speaker Outputs: The A and B speaker outputs are in parallel to the  
amplifier output. When connected to the A or B output, either 6-  
ohm or 8-Ohm speakers could be used. When using both A and B  
speaker outputs, only speakers with impedance higher than 8  
Ohms can be connected. For Bridge amplifier operation, connect  
the + of the speaker to the R+ and - of the speaker to the L+ of the  
amplifier.  
Mono Bridged Operation  
FIRST DPA-1.2 AMPLIFIER  
SECOND DPA-1.2 AMPLIFIER  
LEFT SPEAKER  
8 OHM  
RIGHT SPEAKER  
8 OHM  
LINE INPUT  
LINE INPUT  
SENSING  
SENSING  
L
L
R
R
SPEAKER AOUT  
SPEAKER AOUT  
INPUT FROM  
LEFT LINE  
LEVEL OUTPUT  
INPUT FROM  
RIGHT LINE  
LEVEL OUTPUT  
SPEAKER BOUT  
SPEAKER BOUT  
Stereo Operation  
6 OHM SPEAKERS  
8 OHM SPEAKERS  
8 OHM SPEAKERS  
SPEAKER AOUT  
SPEAKER AOUT  
SPEAKER BOUT  
SPEAKER BOUT  
7
 
12-Volt Trigger In and Out: The Trigger  
output is 12 volts at a maximum of  
100mA. This can be used to drive a  
relay- operated AC outlet or other 12-volt  
triggered devices. The 12-volt trigger  
12V  
TRIG  
12VTRIG  
OUT 100mA  
INPUT  
input is used to activate the DPA-1.2 independently from the auto  
turn on sensing circuit, in which case the delay, video and audio  
sensing are bypassed.  
Delay Time: The delay timecan be adjusted from about  
DELAY  
5
1
0.3 minutes to 8 minutes. The DPA-1.2 amplifier will  
automatically switch to the default input signal after the  
delay setting. (When set between 4 and 5, defeats delay  
setting). When the audio or video source is no longer  
4
2
3
playing, the DPA-1.2 will switch back to the default input after the  
set delay time.  
AC  
Power: The DPA-1.2 is set at the factory  
for operation of either 120 VAC 60Hz or  
120V  
60Hz  
2A~  
230 VAC 50Hz. Please reference the  
voltage rating on the back panel.  
Includes detachable 2 terminal power cord.  
8
 
6. SPECIFICATIONS  
Audio power output: Continuous 35W @ 8 Ohms,  
45W @ 6 Ohms.  
Frequency response: 20HZ to 20KHZ -0.3dB.  
Total harmonic distortion: 0.05% 8 Ohm .075% 6 Ohm  
Input sensitivity: 400mV line  
Input impedance: 22k Line Input  
Signal to noise ratio: 85dB  
Input trigger: 12VDC 10k  
Output trigger: 12VDC 100mA  
Auto off delay time: 2 to 10 minutes  
Primary fuse: T2.0A /250V  
Power requirements: Factory set for 120 VAC 60Hz or  
230 VAC 50Hz.  
2 terminal detachable power cord  
For 230VAC operation, use a power  
cord (not supplied) rated for 240VAC  
2A or higher.  
Weight: 9 lbs.  
Dimensions: 6W x 10D x 3.5H  
9
 
7. WARRANTY  
The Russound DPA-1.2 is fully guaranteed for two (2) years from  
the date of purchase against all defects in materials and workman-  
ship. During this period Russound will replace any defective parts  
and correct any defect in workmanship without charge for either  
parts or labor. 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 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 per-  
formed by an agency or person not specifically authorized in writ-  
ing by Russound. Damage to or destruction of components due to  
improper use voids the warranty. In these cases the repair will be  
made at the owners expense. To return for repairs, the unit must be  
shipped to Russound at the owners expense, along with a note  
explaining the nature of the service required. Be sure to pack in a  
corrugated container with at least 3 inches of resilient material to  
protect the unit from damage in transit.  
10  
 
NOTES  
11  
 
5 Forbes Rd. Newmarket, NH 03857, USA  
603.659.5170 Fax 603.659.5388  
Come visit us at:  
 

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