Manual_A-amp_08_eng DLS.pdf

Contents

How to install and

operate the

DLS ULTIMATE

A-series amplifiers

A2, A3, A4, A5, A6,

and A7

Caution………………………..…….. 2

Installation…………………….……. 2

Tools and materials needed………. 3

Amplifier installation kit…………....

Routing Wires……………………....

Wiring

Power terminals.....……………..…. 4

Inputs and controls…….…………... 5

Input wiring................................... 5

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

Phase control................................ 5

Remote bass level......................... 5

Protection circuits.......................... 5

Input & controls A7…………........... 6

Crossovers / filters………………..... 7

Crossovers / filters A7....................

Professional tips............................

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.

Wiring examples:

DLS A2.........................................

10-11

DLS A3.........................................

12-13

DLS A4.........................................

14-16

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.

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.

DLS A5.........................................

DLS A6.........................................

DLS A7.........................................

19-22

Testing……………………………….. 23

Trouble-shooting…………………….. 23

Specifications………………………... 24-25

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.

Approval of electromagnetic compatability

according to the EEC Directive 95/54/EC for

DLS A2, A3, A4, A5, A6, A7.

E 11 Approval No: 10R-020962

Technical Assistance

For technical assistance ask the shop where the

product was sold, or the distributor in your 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

ULTIMATE A-series

Congratulations, you have just purchased the finest mobile audio amplifier that today´s technology can

offer. DLS offers a series of high quality car audio products for real music lovers, and we are sure that you

will enjoy a high class car sound for many years.

CAUTION!

Some of our amplifiers are capable of producing a sound pressure level that can cause permanent

damage to your hearing system. High sound pressure levels combined with long time listening can give

permanent damage to your hearing system. Choose a listening level that is comfortable for your ears.

To establish a safe level:

Start your volume control at a low setting. Slowly increase the volume until you can hear the music

comfortly and clearly, without any distortion. Sudden sound shocks are dangerous.

The following noises can be dangerous with constant exposure:

90 dB

Subway, motorcycle, lawn mover

4 hours max

100 dB

Chain saw

2 hours max

120 dB

Rock band live concert

30 minutes max

140 dB

Gunshot blast, jet plane

0 minutes

Installation

Before you begin to install

Disconnect Battery

Before you begin you need to read the manual, to have

some tools, cables and other material available. There

is one such list of material on the following page.

Before starting the instal-

lation, always disconnect

the negative terminal of

the battery.

Amplifier location

Important

Allow air circulation around the amplifier.

Professional Tip:

The DLS ULTIMATE amplifiers have a great

flexibility in mounting but the best is to mount it

somewhere in the trunk.

When you select a location, do remember that the

amplifier generates a lot of heat.

If amplifier installation kits are available with diffe-

rent size of power cable, chose the most heavy power

cable to improve sound quality and to allow more

amplifiers to be installed now or later.

These are the minimum sizes of power cables we

recommend for the different models:

Cable length:< 1,5 m 1,5 - 4 m

Choose a location where air can circulate freely

around the amplifier. Do not cover the amplifier with

carpets or hide behind trim panels.

Do NOT mount the amplifier upside down under

the hat rack.

In the amplifier case there are four mounting holes.

If the surface where you intend to mount the

amplifier isn´t big enough you can mount it on a

separate fibre board or similar. This will also isolate

the amplifier chassies from ground.

>4 m

10 mm 2

16 mm 2

21 mm 2

A3 / A4 / A5 16 mm 2

21 mm 2

33 mm 2

21 mm 2

33 mm 2

50 mm 2

16 mm 2

21 mm 2

33 mm 2

10 mm 2

16 mm 2

21 mm 2

The ground cable must have the same size.

WARNING!

Check all locations and placements carefully before

making any cuts, drilling any holes or making any

connections.

Max fuse values for different cable sizes:

6 mm 2 (9 AWG) :25 A 10 mm 2 (7AWG) :40 A

16 mm 2 (5AWG) :60 A 21 mm 2 (4AWG) :100 A

33 mm 2 (2AWG) :150 A 42 mm 2 (1AWG) :200 A

ULTIMATE A-series

Tools and material needed

Routing wires

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 oxidation

Stereo

head unit

Material:

Speaker wire: minimum

12 AWG = 4 mm 2 for subwoofers

13 – 16 AWG = 1,5-2,5 mm 2 for other

speakers

Sheet metal screws for mounting the

amplifier to the amplifier board and the

amplifier board to the car + some extra

for fuse holder, amplifier ground etc.

Electrical insulation tape

½ inch thick plywood or particle board for

the amplifier to be mounted upon.

Amplifier installation kit:

If available,buy an amplifier installation kit. It

contains normally all you need. This is what you

have to buy if you buy the items separately

20- 25 feet = 6- 7.5 meter power cable,

preferably AWG 5 = 16 mm 2 or heavier. See

the table on previous page to find out what

cable size you need.

1 pc of fuseholder to install close to the

car battery + fuse 80 Ampere, or other value

depending on what cable and amplifier you

use. See the table on page 2.

20 feet of AWG 15 = 1,5 mm 2 wire for

remote turn on / off cable from head unit.

RCA-cable for input from head unit.

- 20 feet or 5 meter for trunk installations

You can connect all inputs together and use

only one RCA-cable, or use separate wires

to each input.

Professional Tip:

Gauge (ga) is an American measure for cable size,

also called AWG (American Wire Gauge).

Two min. 5 gauge ring crimp terminals –one

for connection to the battery plus and one

for the amplifier ground connection.

CONVERSION GAUGE - mm 2

0 AWG = 50 mm 2

1 AWG = 42 mm 2

9 AWG = 6,8 mm 2

2 AWG = 33 mm 2

10 AWG = 5,3 mm 2

Wire ties

3 AWG = 27 mm 2

11 AWG = 4,2 mm 2

4 AWG = 21 mm 2

12 AWG = 3 mm 2

Insulating grommet or insulating tube

5 AWG = 16 mm 2

13 AWG = 2,7 mm 2

6 AWG = 13 mm 2

14 AWG = 2 mm 2

7 AWG = 10 mm 2

15 AWG = 1,65 mm 2

8 AWG = 8 mm 2

16 AWG = 1,3 mm 2

ULTIMATE A-series

Remote terminal ( REM )

Wiring

For RCA cable signal input:

Connect the radio power antenna lead = remote

turn on/off from the head unit to the amplifier remote

connection. This turns on the amplifier whenever

the car stereo is turned on.

You can either use the built in remote cable in the

RCA cable itself, or use a separate cable.

Sometimes a small disturbance may enter the

amplifier coming from the remote voltage, through

the built in remote wire and into the RCA cable.

Thus we recommend to use a separate remote wire

and run the RCA lead separate from remote wire,

power cables and speaker cables.

You can insert the cable directly into the amplifier

terminal. If there is no remote voltage available from

the stereo, you must connect to the ignition key,

through the radio, or any accessories fuse.

Power, remote and fan terminals

Power terminal for A2, A5, A7

Connect the fuse holder as close to the vehicle battery

+ as possible, using AWG 5 = 16 mm 2 or heavier cable

(see table on page 2). Use ring crimp terminal cable

to connect to battery +. Apply silicon grease to the

fuse to prevent corrosion.

POWER IN

BATT+ REMOTE GND

DLS

POWER IN

BATT+ REMOTE GND

Battery 12V

DLS FH1B or

FH2B

fuse holder

FM 1 107,3

Connect the battery cable to the +12 Volt terminal

on the amplifier. Model A2, A5 and A7 accepts AWG

4 = 21 mm 2 direct into the terminal. Be sure to use a

rubber grommet or a plastic insulating tube where

the cable passes the firewall or other places where

it can easily be jammed.

Use wire ties to secure to existing cables in the

engine compartment.

Ground Terminal ( GND )

Connect to a good chassis ground. The ground

connection should be clean, unpainted metal to prov-

ide a good electrical connection. Use a wire brush,

a scraper or a piece of an abrasive sheet to clean

the metal. Use a lock washer or two to secure

contact. Protect with silicon grease or by paint

applied afterwards.

POWER IN

BATT+ REMOTE GND

Power terminal for A3, A4 & A6

POWER IN

BAT+ REM GND

POWER IN /POWER CAP

GND FAN OUT POS+

POWER

PROTECT

Fan terminal

DLS A3, A4, A5, A6 and A7 has a fan

output terminal. On A3, A4 and A6

the terminal is combined with the

extra DC-terminal. The output is

electronically controlled and starts if

the amplifiers is overheated. The ter-

minal is marked "FAN”.

Use a 12 volt DC fan.The speed of

the fan increases when the tempera-

ture rises. Direct the fan towards the

amplifier cooling ribs. Full speed is

obtained at 70 degrees C. NOTE!

Maximum load on the FAN terminal

is 0,5 Amp.

FAN

- +

Fuse

150 A

To remote

on head unit

Battery

12 volt

Fan12 V

Power

capacitor

These models have double DC inputs. The termin-

als are internally connected so it´s enough to

connect just one of them. If you want to reduce the

voltage drop to the amplifier, use both inputs. The

extra DC input can also be used for the connection

of a Power Capacitor or an extra battery. See the

example above. These amplifiers requires a

powerful fuse holder like the FH2B with an ANL 150

Amp fuse (when using 2AWG / 33 mm 2 power

cable).

Fan 12 V

Fuses

Use only ATC blade type

fuses. Make sure to replace

with the same value. The

value is printed above the

fuse holders. DLS A4 has no

internal fuses, use an

external fuse instead.

ULTIMATE A-series

Phase control on A5, A6 and A7

Input and controls

The phase control on can be set

continuously from 0 - 180

degrees. This is very useful when

you want to adjust the bass sound

for best front stage image. Start

at 0 and turn the control slowly

clockwise until you experience

that the bass sound is coming

from the front. If you dont get the

result you want, also try to phase

reverse the subwoofer

connections and make a new

adjustment. On A5 you find this

control on the amplifiers left side.

Input Wiring

Inputs are low level from the RCA output of the head

unit.

Low level input

Use a pair of shielded stereo audio cables with RCA

type jack. Most trunk-mount amplifiers need a 20

feet RCA cable ( appr 5 – 6 meters). Most under

the seat installations require 12 feet ( 2 – 3 meters)

RCA cables. Avoid placing the RCA cable close to

speaker cables, power cables and remote control

cable.

DLS A2 and A3 uses a single

pair of RCA inputs while

three and four channels

amplifiers like A4 & A5 uses

dual pairs of RCA inputs

A7 is a multi channel

amplifier with three separate

inputs. On next page you can

see how to connect the RCA inputs of A7.

Use high quality interconnects like the DLS SL5

PRO or SL5 Ultimate that has an effective shielding.

When you run the signal cables remember to keep

them well spaced from the wiring loom and the

power feed to the amplifier to avoid picking up

interference. Lay the power cables and signal

cables separated on each side of the car. Any extra

cable must be laid in zig-zag style and definitely

not coiled.

PHASE

0 180

DEGREE

Remote bass level and phase shift

control on A5, A6 and A7

A remote level and phase

shift control is included with

A5, A6 and A7 amplifiers.

You can adjust the bass

level and phase from the

front seat of your vehicle.

Connect it to the socket

marked Remote Bass

Level. When using a

remote level control you

must activate it by pushing

the switch besides the

socket, to IN-position.

Remote Bass

Level

OUT

Phase

Level

Input Level control

Remote Bass Level &

phase shift control

LEVEL

0,5V

Power / Protect light

The input level control, 7V – 0,2 V, matches the

output of your head unit to the input of the amplifier.

After installation is complete, make sure the input

of the amplifier is turned down all the way ( counter-

clockwise at 7V ). Play a tape or CD, make sure all

bass or treble settings or equalizer are flat, and

turn the volume of the radio up until you just start

to hear distortion. Turn the volume control down

just a bit. On the amplifier increase the input level

control ( clockwise or to the right ) until you just

start to hear distortion, then back the level control

just a bit. Now your radio and amplifier levels are

matched.

On three/ four channel amplifiers like the A4, A5 or

A7 it´s necessary to adjust the levels indiviually to

achieve a good sound balance between the diffe-

rent speakers, different speakers have different

sensitivity. When using two of the channels for

subwoofer operation, start the level adjustment on

these channels. After having adjusted the bass level

for good performance, adjust the level to the front

system for a good sound balance.

Power

(Blue)

The power light (blue) is turned on when

the amplifier is turned on.

Protect

(Red)

The protect light ( red ) is turned on

when the amplifier shuts down from

overheating, or a short circuit (speaker

failure)

The amplifiers have an internal high current

protection circuit shutting down the amplifier if the

current draw is too high. It is indicated with a LED

marked ”PROTECT”. The protection circuits will

reset by turning the head unit off and on again.

The amplifiers also have a thermal protection that

turns off the amplifier if getting to hot. It will resume

operation after cooling down. If necessary install

an external cooling fan.

There are one or two fuses on the front. Disconnect

the main fuse before replacing any of these. Always

replace with the same type and value.

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