X-PROGRAM X-D50 User manual

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 X-program 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 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.
Contents
Features…………………………….. 2
Installation…………………….……. 2
Tools and materials needed………. 3
Amplifier installation kit………….... 3
Routing Wires…………………….... 3
Wiring
Power and Outputs……………..…. 4
Inputs and controls………………... 5
High and low level inputs............... 5
Input level control........................... 6
Phase control, Crossovers, etc....... 6
X-D50 speaker wiring:
Four speakers and subwoofers....... 7
Two speakers bridged + subwoofer 8
Testing……………………………….. 9
Troubleshooting……………………... 9
Professional tips…………………….. 10
Specifications………………………... 11


 Technical Assistance
For technical assistance ask the shop where the
product was sold or the distributor in your very coun-
try. Information can also be found on our WEB-site
www.xprogram.com
We follow a policy of continuous advancement in
development. For this reason all or part of
specifications & designs may be changed without
prior notice.
DLS Svenska AB
P.O. Box 13029 - SE-40251 Göteborg - Sweden
Tel: [phone] - Fax: [phone]
E-mail: [email protected]
www.xprogram.com
X-program products are produced in Taiwan
X-program is designed, engineered and distributed by:
This product must be returned to the
separate collection system for electronic
products. Do not dispose this product
together with general household waste.
DECLARATION OF CONFORMITY
X-program amplifiers for vehicles are manufactured
in accordance with the EU directive EEC 95/54 (72/
245/EEC) and are marked with the approval number.
They are also marked in accordance with the WEEE-
directive 2002/96/EC.
The products are also produced in accordance with
the EU RoHS directive 2002/95/EC.
How to install and
operate the
X-D50
digital 5-channel
amplifier
Approval of electromagnetic compatability according
to the EEC Directive 72/245/EEC and 2006/96/EC
E 13 Approval No: 03 6367

This model include
- Digital class D technique
- High efficiency
- Low profile design
- RCA line inputs
- Parallel input switch
- High level input with Auto start
- Phase shift control on mono channel
- Powerful cable terminals
- Built-in active crossovers
Installation
Before you begin installation
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.
Amplifier location
Important
Allow air circulation around the amplifier.
2
Disconnect Battery
Before starting the instal-
lation, always disconnect
the negative terminal of
the battery.
The X-program series of amplifiers have a compact
design that allows great flexibility in mounting. You
can mount it under a seat or in the trunk.
When you select a location, do remember that the
amplifier generates a lot of heat.
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 in an inverted or upside
down position.
Check all locations and placements carefully before
making any cuts, drilling any holes or making any
connections.
X-logo on amplifier cooling flange
The X-logo on the amplifier top is attached with
two 1 mm hex. screws. The logo can be removed
and twisted 90 or 180 degrees, and then screwed
back in wanted position. The logo can be mounted
in four different ways to match your installation.
Mounting
Fasten the amplifier to the surface using the four
separate brackets coming with the amplifier. The
brackets are attached to the amplifier with screws
and can be directed in two ways, see figure:
Mount the flanges this way, or this way.
Bottom plate of amplifier

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 oxidation
Material:
Speaker wire: minimum
12 AWG = 4 mm2for subwoofers
13 – 16 AWG = 1,5-2,5 mm2 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,
minimum AWG 5 = 16 mm2 or heavier
1 pc of fuseholder to install close to the
car battery + fuse 50 Ampere.
20 feet of AWG 15 = 1,5 mm2wire for
remote turn on / off cable from radio.
RCA-cable for input from radio.
- 20 feet or 5 meter for trunk installations
-12 feet or 2 – 3 meter for under seat
installations.
Four to eight splicers to connect speaker
cables to high level input cable, if high level
input is used.
Wire ties
Insulating grommet or insulating tube
Stereo
head unit
3
Professional Tip:
If amplifier installation kits are available with
different 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.
The amplifier power terminals accept AWG 4
cables directly, so If possible buy AWG 4 = 21
mm2cable for best performance.
Both the positive wire and the ground wire must
have the same size. To avoid cable fire, be sure
not to oversize the main fuse value for the power
wires.
THE DC-FEED
Maximum main fuse values for different cable
sizes.
6 mm2(9 AWG) :25 A 10 mm2 (7AWG) :40 A
16 mm2 (5AWG) :60 A 21 mm2(4AWG) :100 A
33 mm2(2AWG) :150 A 42 mm2 (1AWG) :200 A
Routing wires

Wiring
Power and Outputs
Ground Terminal ( GND )
Remote terminal ( REM )
Use only 30 ampere ATC
blade type fuses when
replacing a blown fuse.
4
Power terminal ( +12V)
Connect the fuse holder as close to the vehicle
battery + as possible, using AWG 4 = 21 mm2
power cable. Use a ring crimp terminal cable to
connect to battery +. Apply silicon grease to the
fuse to prevent corrosion. The AWG4 cable can
use an 80 Amp fuse, if the cable is smaller, the
fuse value must be lower (see table on previous
page).
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
(Green)
Protect
(Red)
Power Light / Protect light
The power light (green ) comes on when
the amplifier is turned on.
The protect light ( red ) comes on
when the amplifier shuts down from
overheating, or a short circuit ( spea-
ker failure)
Fuses
For RCA cable signal input:
Connect the radio power antenna lead = remote
turn on/off from the car stereo 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.
For High Level input:
We recommend you to connect the remote wire as
described above. The amplifier will produce soft on
/ soft off operation this way.
In the case that there is no remote voltage available
from the car stereo or you want to simplify the in-
stallation, the amplifier can be turned on/ turned off
by the high level input voltage. This is done
automatically when the head unit is turned on. There
is a small disadvantage that this function gives soft
turn on operation but some pop sound when
switching off.
GND REM +12V Fuse
A cable up to AWG 4 fits directly in the amplifier +
12 V terminal, tighten with the hex screw.
Be sure to use a rubber grommet or a plastic
insulating tube where the cable passes the firewall
or other places where it can be easily jammed.
Use wire ties to secure to existing cables in the
engine compartment.
DLS
DLS FH1
fuse holder
Battery
+ pole
GND REM +12V Fuse
GND REM +12V Fuse
To head unit Power
Antenna lead

Important
Use either the low level or 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. 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. Connect to in-
put socket R/L.
X-D50 have three inputs, Front R/L, Rear R/L and
one for the mono sub channel.
Depending on your chosen configuration you can
use either three separate RCA cables, or two RCA
cables using the Parallel input switch to connect
rear and sub inputs in parallel.
Input and controls
Low level Input Wiring
Inputs may be low level from the RCA output of the car
stereo or high level from the car stereo speaker out-
put. Low level = RCA is to prefer for the best sound
quality.
Connect left and right speaker wires coming from
the car stereo to the high level input as shown. You
must connect both plus and minus as the inputs are
balanced, connecting plus only gives lower level and
bad sound quality. By changing the polarity of plus
and minus, you can change the phase.
X-D50
On X-D50 the high level signal is fed internally to
channel SUB when using high level input.
5
Hi level input plug on amp for CH L/R.
High Input
(Rear) Violet: L ch.+
Violet/Black: L ch.-
Green/Black: R ch.-
Green: R ch.+
Hi level input plug on amp for CH L/R.
High Input
(Front) White: L ch.+
White/Black: L ch.-
Grey/Black: R ch.-
Grey: R ch.+
High level input socket
Automatic turn on when using high level input.
The amplifier turns on automatically when using high
level input, you dont need to connect a separate
remote wire from your head unit.
For a soft turn ON /OFF operation we recommend
you to use a remote wire, if this is available.
High Level Input wiring
Parallel input on X-D50
If you don’t have dual line cables to
rear and sub input you can use a
single line cable. Connect to the rear
stereo input sockets and set the
Parallel input swich to position ”P-
sub” and the signal is fed to the Sub
input socket automatically.
Parallel
input
Off P Sub

Input Level control
The input level control, 6V – 0,3 V,
matches the output of your radio to
the input of the amplifier. After instal-
lation is complete, make sure the in-
put of the amplifier is turned down all
the way ( counter-clockwise at 6V ).
The high pass filter
blocks very low
frequencies from reaching
the speakers. It is mostly
used at say 60 Hz to
protect small speakers (
like 6 inch and smaller )
from deep bass.
High Pass filter on rear / front channels
6
The X-D50 is a 5-channel amplifier for use with a
front and rear system and a subwoofer.
The amplifier has the following filters / features:
Stereo sections (front & rear channel pairs):
High pass filter adjustable from 15 to 250 Hz.
Level control adjustable from 0,3 to 6 Volt.
Mono section:
Lowpass filter adjustable between 30 and 150 Hz.
Subsonic / highpass filter fixed to 25 Hz.
Phase control adjustable from 0 to 180 degrees.
Play a 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.
The phase control can be set
continuously from 0 - 180 degrees.
This function is used together with
subwoofers. 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 don’t get
the result you want, also try to phase
reverse the subwoofer connections and
make a new adjustment.
Phase control on mono sub channel
Level
6V 0,3V
Phase
0 180o
Set the filter to 15 Hz position if you want to run the
amplifier in full range mode (almost).
The filter can not be switched off.
Features / crossovers
Low Pass filter on mono sub channel
The low pass filter is mostly
used for subwoofers. It will
allow low frequencies only
and blocks higher frequencies.
A typical setting is 50 – 70
Hz.
The filter can not be switched
off.
Crossover
15 Hz 250 Hz
50 Hz 100 Hz
Crossovers and other features
Crossover
15 Hz 250 Hz
50 Hz 100 Hz

X-D50
For power wiring, see page 4
For High or low level input wiring, see page 5
7
Filter settings Sub channel
Speaker wiring X-D50
+ -
Filter settings Front & rear channels
The low pass filter is used for
subwoofers. It will allow low
frequencies only and blocks
higher frequencies.
A typical setting is 50 – 70 Hz.
LPF
30 Hz 150 Hz
60 Hz 100 Hz
The phase control can be set
continuously from 0 - 180
degrees.
This function is used together
with subwoofers. 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 don’t get the result
you want, also try to phase
reverse the subwoofer
connections and make a new
adjustment.
Phase
0 180o
2. One or two subwoofers to mono sub channel,
Each speaker min 4 ohm.
The high pass filter
blocks very low
frequencies from reaching
the speakers. It is mostly
used at say 60 Hz to
protect small speakers (
like 6 inch and smaller )
from deep bass.
Set the filter to 15 Hz po-
sition if you want to run the
amplifier in full range
mode (almost).
The filter can not be
switched off.
Crossover
15 Hz 250 Hz
50 Hz 100 Hz
- Front Speaker - - Rear Speaker -
1. Two or four fullrange speakers to the front
and rear speaker channels
+ L- + R-
+ L- + R-

8
2. One or two subwoofers to mono sub
channel, Each speaker min 4 ohm.
Speaker wiring in bridge mode X-D50
Front speakers connected in bridge mode
Filter settings Front channels
Filter settings Rear channels
The high pass filter
blocks very low
frequencies from reaching
the speakers. It is mostly
used at say 60 Hz to
protect small speakers (
like 6 inch and smaller )
from deep bass.
Set the filter to 15 Hz po-
sition if you want to run the
amplifier in full range
mode (almost).
The filter can not be
switched off.
DC
X-D50
For power wiring, see page 4
For High or low level input wiring, see page 5
+ L- + R-
+ L- + R- + -
Filter settings Sub channel
The low pass filter is used for
subwoofers. It will allow low
frequencies only and blocks
higher frequencies.
A typical setting is 50 – 70 Hz.
LPF
30 Hz 150 Hz
60 Hz 100 Hz
The phase control can be set
continuously from 0 - 180
degrees.
This function is used together
with subwoofers. 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 don’t get the result
you want, also try to phase
reverse the subwoofer
connections and make a new
adjustment.
Phase
0 180o
1. Two fullrange speakers to X-D50,
connected in bridge mode to front & rear
channel pairs.
Crossover
15 Hz 250 Hz
50 Hz 100 Hz

9
Testing
Before you finish the installation, you should do the
following tests to make sure the wiring is correct and
everything is operating properly.
Reconnect Battery
When wiring is complete,
reconnect the battery
negative terminal.
If problems occour during the installation, or later,
this guide might help you to find out whats´s wrong.
THE AMPLIFIER IS DEAD:
1. Check power lead, ground and remote
connections at the amplifier using a multi meter.
2. Check the battery terminal connections.
3. Check the power lead fuse or circuit breaker. If
fuse damage continues, inspect the power lead
for short circuits.
4. Check the amplifier protection fuses. Are these
broken change to new ones with the same value.
If short circuiting continues, contact your local
DLS dealer. A fault may exist in the amplifier.
5. To start the amplifier requires a remote voltage of
9-15 volt. Check the voltage with a multi meter.
AMPLIFIER PROTECTION FUSE BLOWS AT LOW
VOLUME :
1. One or more speaker cables are shorted. Make an
insulation test with a multi meter. The cables must not
have a connection to earth.
THE AMPLIFIER TURNS OFF AFTER 10 - 30 MINU-
TES.
The amplifier is overheating due to inadequate venti-
lation. Check mounting position is free from obstruction.
Do this:
1. Move the amplifier to a place with better ventil-
ation.
2. Install one or two fans to cool down the heat-
sink.
3. Overheating can also be caused by an
impedance load below the level permitted.
NO OUTPUT FROM ONE OR MORE SPEAKERS:
Check the following:
1. Balance control position.
2. Fader control position.
3. Speaker cable connections to both amplifier and
drivers.
4. Signal lead plugs and cables.
5. Change left and right signal lead plugs in the
amplifier to see if the problem moves to a diffe-
rent speaker, the lead has a fault.
If the problem remains, the speaker or amplifier
are at fault.
Troubleshooting
Test speaker connections
Make sure the speakers are connected right. Use
the balance control on the head unit to make sure
right channel is on right speaker etc. If speakers
don´t play at all, one or both speaker wires may
be disconnected.
Test power wiring
1. Turn on the head unit but do not turn up the
volume. The amplifier power light should
come on. If not, check the remote and +12
volt wires. Also check the ground
connection.
2. Turn up the head units volume slightly. All
speakers should operate. if not, check wiring
connections at amplifier and speakers.

NOISE PROBLEMS
WHINING NOISE VARYING WITH ENGINE
REVOLUTIONS:
Do this:
1. Rewire the power supply (12 V) to source
unit direct from battery.
2. Rewire ground wire from source unit to
clean position on chassis.
3. Check all power connections to ensure that
they are clean and tight.
4. Check quality of system ground connection.
5. Install a Power Cap capacitor. This can be
helpful against most noise problems.
CONSTANT WHINING NOISE:
Do this:
1. Ensure that all equipment has a common
ground point.
2. Check quality of earth strap connection from
battery negative terminal to chassis.
3. Disconnect signal cables from amplifier to
see if noise disappears. If so the leads are
picking up noise. Test this by laying a new
cable over the seats and reconnecting to the
amplifier. If the noise does not return, re-
route original cable away from source of
interference.
If noise remains regardless of cable position,
try to use so called Quasi-balanced signal
cables. DLS PRO-cables are
Quasibalanced.
SPEAKER POLARITY CHECK.
All speakers in a car audio system should be
connected in phase (the same polarity). All spea-
ker cones must move in the same direction. Out of
phase speakers will cause a lack of bass, and a
poor stereo soundstage.
Checking polarity:
Hold the - connection of the speaker wire to the -
terminal of a 1,5 Volt flashlight battery. Tap the +
wire on to the + terminal of the battery, and observe
the movement of the cone. The cone should move
outwards when the wire touches the battery, and
inwards when the battery is removed. If it is the
other way around, the speaker has been connected
backwards and it must be removed and connected
correctly.
If your system also has a subwoofer connected
through a passive 6 or 12 dB crossover, try to
connect this with various polarity and judge what
sounds best. The phase shift in passive crossovers
sometimes makes it necessary to change polarity.
+
-
+
-
Battery
1,5 Volt
NOTE! Tweeters can not be tested this way, double
check the connections instead.
Professional Tip:Professional Tip:
Professional Tip: Professional Tip:
Installing in trunk
When installing the amplifier in the trunk, run the
power wires along the same path as the other
vehicle wiring. Many cars have insulated channels
for wiring. you will have to remove the door sill trim
and the carpet.
Securing wires
Use wire ties to bundle together when possible.
(But never bundle speaker wires or signal cables
together with power wires.
Professional Tip:
Professional Tip:
Speaker and power wires
Do not run speaker and power wires next to each
other. Power wires can generate a ”siren” sound in
the speakers. Run speaker and power wires on
opposite sides of the car.
Crimp connections
Purchase crimp connectors and crimping tool.
Connectors are color coded.
1. Strip 1/4 inch (6 mm) of insulation from the wire.
2. Insert into connector
3. Crimp tightly
10

Specifications
We follow a policy of continuous advancement in
development.
For this reason all or part of specifications & designs
may be changed without prior notice.
11
X-program X-D50
Number of channels 5
Power output, 4 ohm (0,1% THD) 4 x 80 W
Power output, 2 ohm (0,2% THD) 4 x 130 W
Power output, 4 ohm bridged 2 x 225 W
Power out mono sub ch. 4 ohm 1 x 270 W
Power out mono sub ch. 2 ohm 1 x 310 W
Signal to noise ratio, A-weighted >100 dB
Damping factor >100
Frequency response 10 Hz - 35 kHz
Input impedance, low level 33 kohm
Input impedance, high level 1 kohm
High level input with auto start Yes
Input sensitivity 0,3 - 6V
Variable phase shift control 0-180 degrees (mono sub channel)
Filter high pass front/rear channels 15 - 250 Hz / 12 dB slope
Filter low pass, mono sub channel 30 - 150 Hz / 18 dB slope
Subsonic filter, all channels Fixed 25 Hz / 18 dB slope
Power consumption, idle 2 A
Max current draw 60 A
Fuse 2 x 30 A
Dimensions HxWxD(mm) 50 x 399 x 250
Dimensions (inch) 2 x 15,7 x 10
Weight 4,7 kg / 10,4 lbs
All above output power
ratings at 13,8 VDC
DECLARATION OF CONFORMITY
X-program amplifiers for vehicles are manufactured
in accordance with the EU directive EEC 95/54 (72/
245/EEC) and are marked with the approval number.
They are also marked in accordance with the WEEE-
directive 2002/96/EC.
The products are also produced in accordance with
the EU RoHS directive 2002/95/EC.

DLS Svenska AB
P.O. Box 13029
SE-40251 Göteborg, Sweden
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
www.dls.se
www.xprogram.com