Specifications

ManualsBrandsDLS ManualsAutomotiveCAT31

How to install and

operate the

DLS CAT31

24 V amplifier

Welcome!

This owners manual is written in easy english and

uses a lot of drawings to simply the installation and

use of the above amplifier.

Your DLS amplifier must be installed correctly in or-

der 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 installation

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.

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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

Contents

Specifications.............................. 1

Features…………………………….. 2

Installation…………………….……. 2

Trouble shooting…………………… 2

Tools and materials needed………. 3

Amplifier installation kit………….... 3

Routing Wires…………………….... 3

Wiring

Power and Outputs……………..…. 4

Inputs and controls………………... 5

Input level control.......................... 5

Crossovers…………...................... 5-6

Phase control.....………………...… 5

Speaker wiring:

Front stereo speakers................... 6

Subwoofers.................................. 6

Test............................................. 6

Connecting a center channel speaker 7-8

Professional tips…………...…….... 9

Approval of electromagnetic compatability according

to the EEC Directive 95/54/EC

DLS Svenska AB - 2007-01-10

Summary of content (12 pages)

PAGE 1
How to install and operate the DLS CAT31 24 V amplifier Welcome! Contents This owners manual is written in easy english and uses a lot of drawings to simply the installation and use of the above amplifier. Your DLS amplifier 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.
PAGE 2
CAT31 CAT31 -24 Volts - features RCA stereo channels input High level input with auto start Mono channel: RCA input or input from stereo channels Continuous variable low pass crossover Continuous variable high pass crossover Subsonic filter 25 Hz fixed ON-OFF Phase control cont. variable 0-180 degrees Electronic protection circuitry against short-circuit, DC offset and thermal overload.
PAGE 3
CAT31 Tools and material needed Tools: Flat and Phillips screwdrivers Wire cutter Wire stripper Electric drill with drills Crimping tool Digital multimeter or test lamp Wire brush, scraper or a piece of an abrasive sheet to remove paint for a good ground connection Grease to protect the ground connection from corrosion Routing wires Stereo head unit Material: Speaker wire: minimum 12 AWG = 4 mm2 for subwoofers Sheet metal screws for mounting the amplifier to the amplifier board and the amplifier board t
PAGE 4
CAT31 Remote terminal ( REM ) Wiring Power and Outputs Power terminal ( +24V) Connect the fuse holder as close to the vehicle battery + as possible, using AWG7 = 10 mm2 or heavier cable. Use ring crimp terminal cable to connect to battery +. Apply silicon grease to the fuse to prevent corrosion. The fuse value depends on the +24V +12V REM REM GND GND size of the power cable. A 16 mm2 cable can have a 60A fuse. DLS DLS FH 1B fuse holder Connect the battery cable to the +24 Volt terminal on the amplifier.
PAGE 5
CAT31 Input and controls Input Wiring Input Level control ch. A/B/C (Level) Inputs may be low level from the RCA output of the car stereo or high level from the car stereo speaker output.Low level = RCA is to prefer for the best sound quality. Important Use either the low level or the high level input, do not use both at same time. Low level input Use a pair of shielded stereo audio cables with RCA type jack. The cable length varies depending on type of vehicle.
PAGE 6
CAT31 + 24V Connection of front speakers Parallel input Parallel Input Off PC In position PC the signal is internally connected from input A/B to the input for channel C. A single RCA cable is enough to feed all channels. In OFFposition you must use dual signal cables or Y-splits. High pass filter ch. A/B (HPF) HPF 50Hz 220Hz 15Hz 500Hz Off On With the HPF-filter in OFF position the amplifier allows the speakers to play fullrange.
PAGE 7
Truck installations / Center channel speakers The main differences between a sedan car for personal use and a truck are: - 1 the wideness of the car and - 2 the high noise level in a truck in motion. This makes it hard for the driver to listen to the right speaker ( if the steering wheel is on the left ) and for the passenger to hear the speaker on the drivers side. You can also use one speaker only, but connect it to the CAT31 amplifier in the bridge mode way.
PAGE 8
Center channel from car stereo head unit If you don´t have any attenuators or bandpass filters available, there is a simple connection using the built in power of a 2 x 20 Watt or 4 x 20 Watt head unit. Although most headunits are refered to as 2 x 35 Watts or more, the true RMS power is normally 2 x 14 Watt in a four ohm load. The reason you buy an amplifier is to raise the available power to 2 x 75 Watt, roughly 5 times more.
PAGE 9
CAT31 Professional Tip: Professional Tip: NOISE PROBLEMS SPEAKER POLARITY CHECK. WHINING NOISE VARYING WITH ENGINE REVOLUTIONS: All speakers in a car audio system should be connected in phase (the same polarity). All speaker cones must move in the same direction. Out of phase speakers will cause a lack of bass, and a poor stereo soundstage. Do this: 1. Rewire the power supply (24 V) to source unit direct from battery. 2. Rewire ground wire from source unit to clean position on chassis. 3.
PAGE 10
Specifications DLS Performance CAT31 - 24 Volt Number of channels Stereo Channels: RMS power out in 4 ohm ( 0,1% THD) RMS power out in 2 ohm ( 0,1% THD) RMS power out in 1 ohm ( 0,5% THD) RMS power out in 4 ohm bridged mode Filters high pass 3 Ch A & B 2 x 75 Watt 2 x 145 Watt 2 x 210 Watt 1 x 280 Watt 50 – 150 Hz Mono Channel: RMS power out in 4 ohm RMS power out in 2 ohm Filter subsonic Ch C 1 x 170 Watt 1 x 280 Watt 24 dB slope 25 Hz fixed* * can be switched in or out 24dB slope 50 – 120 Hz continuous
PAGE 11
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DLS Svenska AB P.O Box 13029 SE-40251 Göteborg Tel: +46 31 840060 Fax: +46 31 844021 E-mail: info@dls.se www.dls.