DLS MRA22 - MANUAL 2 Manual

How to install and operate the
DLS Marine Audio amplifiers
MRA22
MRA31
MRA41
Welcome!
This owners manual is written in easy english and
uses a lot of drawings to simply the installation and
use of the above amplifiers.
Your DLS amplifiers must be installed correctly in
order to work well. This manual will show you how
to install the amplifier like a pro. Please read the
entire manual before beginning the installation.
Install the amplifier yourself if you feel confident with
our instructions and if you have the proper tools.
However if you feel unsure, turn over the installa-
tion job to someone better suited to it.
Warranty Service
This amplifier is covered by warranty, depending
on the conditions in the country where it is sold. If
the amplifier is returned for service, please include
the original dated receipt with the product.
Technical Assistance
For technical assistance ask the shop where the
product was sold or the distributor in your very
country.You can always phone the DLS Helpdesk in
Sweden+ 46 31 84 00 60 or send an e-mail to
info@dls.se.Information can also be found on our WEB-
site www.dls.se
DLS Svenska AB
P.O. Box 13029
SE-40251 Göteborg, Sweden
Tel: +46 31 840060
Fax: +46 31 844021
E-mail: info@dls.se
www.dls.se
Contents
Installation................................
Tools and materials needed..........
Amplifier installation kit................
Wiring
Power and Remote.....................
Input and controls
Input wiring Hi & Low level...........
Parallel input..................................
Hi/Low input switch........................
Fuses / Protect light.......................
Input level control...........................
Phase control.................................
Crossovers...................................
MRA 22 speaker wiring:
Front speakers............................
Subwoofer.................................
MRA 31 speaker wiring:
Front speakers............................
Subwoofer.................................
MRA 41 speaker wiring:
Four speakers............................
Two speakers + bridged subwoofer.
Two way front system with
active crossover..........................
Testing......................................
Troubleshooting...........................
Professional tips..........................
Specifications.............................. 12
All models include
RCA inputs
High Level input
Continuos variable low pass and high
pass crossover
Remote turn on / off
Automatic remote turn on/ off on high level
input without connecting any remote wire
Electronic protection circuitry against
short-circuit, DC offset and thermal overload.
Bridgeable design to direct full power to
one or two subwoofers etc.
IMPORTANT!
While these amplifiers are specially designed
for marine applications, they are not
waterproof and should not be mounted where
it is likely to get wet.
The cover is made to resist moisture as well
as the PC-board.
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