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How to install andoperate theDLS CA12500 Watts

mono amplifierWelcome!This owners manual is written in easy english anduses a lot of drawings to simply the installation anduse of the above amplifier.

Your DLS amplifier must be installed correctly in or-der to work well. This manual will show you how toinstall the amplifier like a pro. Please read the entiremanual before beginning the installation.Install the amplifier yourself if you feel confident withour instructions and if you have the proper tools.However if you feel unsure, turn over the installationjob to someone better suited to it.

Warranty ServiceThis amplifier is covered by warranty, depending onthe conditions in the country where it is sold. If theamplifier is returned for service, please include theoriginal dated receipt with the product.

Technical Assistance

For technical assistance ask the shop where theproduct was sold or the distributor in your very coun-try.You can always phone the DLS Helpdesk in Sweden+ 46 31 84 00 60 or send an e-mail to [email protected] can also be found on our WEB-sitewww.dls.se

Contents

Specifications................................ 1Features…………………………….. 2Installation…………………….……. 2Trouble-shooting…………………… 2Tools and materials needed………. 3Amplifier installation kit………….... 3Routing Wires…………………….... 3WiringPower and Outputs……………..…. 4Inputs and controls………………... 5Input level control.......................... 5Crossovers…………...................... 5Phase control.....………………...… 6Speaker wiring.............………….…. 6Testing.......................................... 6Professional tips…………………….. 7

SpecificationsDLS Performance CA12

Number of channels 1Power output:Power output in 4 ohm (0,1% THD) 1 x 220 WPower output in 2 ohm (0,4% THD) 1 x 400 WPower output in 1 ohm (0,5% THD) 1 x 500 WAll above output power ratings at 13,8 VoltSignal to noise ratio, A-weighted >100 dBDamping factor >100Frequency response 10 Hz - 35 kHzInput impedance, low level 10 kohmInput impedance, high level 100 ohmInput sensitivity 0,25 - 5VRCA output yesPhase control 0-180 degrees variable yesFilter subsonic 15 - 150 HzFilter lowpass 12/24 dB slope 50 - 500 HzPower consumption, idle 0,8 AMaximum current draw 80 ABuilt-in fan cooling in bottom plate yesFuse 2 x 30ADimensions (mm) 67x295x250Dimensions (inch) 2,63x11,6x9,84Weight 3,8 kg (8,4 lb)

We follow a policy of continuous advancement indevelopment. For this reason all or part of specifications& designs may be changed without prior notice.

DLS Svenska ABP.O. Box 13029

S-40251 Göteborg, SwedenTel: +46 31 840060Fax: +46 31 844021E-mail: [email protected]

www.dls.se

Approval of electromagnetic compatability accordingto the EEC Directive 95/54/EC

E 13 Approval No: 022495

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CA12 include

RCA input and outputHigh level input with auto startContinuous variable low pass crossoverContinuous variable subsonic crossoverPhase control cont. variable 0-180 degreesElectronic protection circuitry againstshort-circuit, DC offset and thermal overload.

InstallationBefore you begin the install

Before you begin you need to read the manual, to havesome tools, cables and other material available. Thereis 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 disconnectthe negative terminal ofthe battery.

The DLS Performance series of amplifiers have acompact design that allows great flexibility inmounting. You can mount it under a seat or in thetrunk.When you select a location, do remember that theamplifier generates a lot of heat.

Choose a location where air can circulate freelyaround the amplifier. Do not cover the amplifier withcarpets or hide behind trim panels.Do not mount the amplifier in an inverted or upsidedown position.Check all locations and placements carefully beforemaking any cuts, drilling any holes or making anyconnections.This is the best direction tomount the amplifier to getthe best cooling.

CA12

DLS logo on amplifier cooling flange

The DLS logo on top of the amplifier is attachedwith two hex. screws. The logo can be removedand twisted 90 or 180 degrees, and then screwedback in wanted position. The logo can be mountedin four different ways to match your installation.

If problems occur 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 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 lowvolume:One or more speaker cables are shorted. Make aninsulation test with a multi meter. The cables mustnot 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 fromobstruction.

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 the speakers:

Check the following:1. Speaker cable connections to both amplifier and subwoofers.2. Signal lead plugs and cables.

Troubleshooting

Removal of side flangesIn order to fasten the amplifier to the surface andconnect speaker and power cables, the flanges onthe sides must be removed. This is done byloosening the hex screws on top of the amplifier.Use a 3 mm hex key.

Remove thesescrews using a 3mm hex. key forremoval of sideflange. Remountafter fastening theamplifier andconnection of thespeaker and powercables.

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Tools and material needed

Tools:Flat and Phillips screwdriversWire cutterWire stripperElectric drill with drillsCrimping toolDigital multimeter or test lampWire brush, scraper or a pieceof an abrasive sheet to removepaint for a good ground connectionGrease to protect the groundconnection from corrosion

Material:Speaker wire: minimum12 AWG = 4 mm2 for subwoofers

Sheet metal screws for mounting theamplifier to the amplifier board and theamplifier board to the car + some extrafor fuse holder, amplifier ground etc.

Electrical insulation tape

½ inch thick plywood or particle board forthe amplifier to be mounted upon.

Amplifier installation kit:If available,buy an amplifier installation kit. Itcontains normally all you need. This is what youhave 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 thecar battery + fuse 60 Ampere.20 feet of AWG 15 = 1,5 mm2 wire forremote 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 seatinstallationsTwo ring crimp terminals –onefor connection to the battery plus and onefor the amplifier ground connection.Two heavy fork crimp terminals to connect+ and – to amplifer – but you do only needthem if you use heavy cable or to make theinstallation look nicer.Four to eight fork crimp terminals toconnect the speaker cables – but you doonly need them if you use heavy cables orwant the installation to look nicer.One fork crimp terminal to connect theremote wire to the amplifier, but you need itonly to make it look nicer.Four to eight splicers to connect speakercables to high level input cable, if high levelinput is used.Wire tiesInsulating grommet or insulating tube

Routing wires

Stereohead unit

3

Professional Tip:

If amplifier installation kits are available with diffe-rent size of power cable, chose the most heavypower cable to improve sound quality and to allowmore amplifiers to be installed now or later.

If possible buy AWG 4 = PL 21 mm2 (or heavier)cable for best performance.

High current drawThe CA12 is a mono amplifier with high power output.The current draw is also high so you must make surethat your vehicles power system (battery and alternator)can provide all the power you need. If you have a badbattery or alternator in can result in a poor sound oreven worse, a broken battery or alternator.

CA12

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WiringPower and Outputs

CA12

Power terminal ( +12V)

+12V REM GND

Remote terminal ( REM )

For RCA cable signal input:Connect the radio power antenna lead = remoteturn on/off from the car stereo to the amplifierremote connection. This turns on the amplifierwhenever the car stereo is turned on.You can either use the built in remote cable in theRCA cable itself or use a separate cable.Sometimes a small disturbance may enter theamplifier coming from the remote voltage , throughthe built in remote wire and into the RCA cable.Thus we recommend to use a separate remote wireand run the RCA lead separate from remote wire,power cables and speaker cables.You can either use a crimp fork terminal or insertthe cable directly into the amplifier terminal. If thereis no remote voltage available from the stereo, youmust connect to the ignition key through the radioor any accessories fuse.

4

DLS

DLS FH 1Bfuse holder

Connect to a good chassis ground. The groundconnection should be clean, unpainted metal to prov-ide a good electrical connection. Use a wire brush, ascraper or a piece of an abrasive sheet to clean themetal. Use a lock washer or two to secure contact.Protect with silicon grease or by paint appliedafterwards.

+12V REM GND

+12V REM GND

Power Light / Protect lightThe power light (green ) comes on whenthe amplifier is turned on.

The protect light ( red ) comes on whenthe amplifier shuts down fromoverheating or short circuit.

Fuses

Use only 30 ampereATC blade type fuses.CA12 uses two 30ampere fuses.

30A

For High Level input:We recommend you to connect the remote wire asdescribed above.The amplifier will be turned on/ turned off by thehigh level input voltage. This is done when the Hilevel/Low level switch is set to Hi level position.There is a small disadvantage that this functiongives soft turn on operation but some plop soundwhen switching off.You do not have to connect any remote voltagewhen using Hi level input.

Connect the fuse holder as close to the vehiclebattery + as possible, using AWG5 = 16 mm2 orheavier cable. Use ring crimp terminal cable toconnect to battery +. Apply silicon grease to thefuse to prevent corrosion.Use a fuse holder for AGU fuseslike the DLS FH1B. Fuse value60 A if you use a AWG5 cable.

Connect the battery cable to the +12 Volt on theamplifier. If you want to improve the power capacityyou can add a Power capacitor of 1 Farad in parallelwith the DC input.Be sure to use a rubber grommet or a plasticinsulating tube where the cable passes the firewallor other places where it can easily be jammed.Use wire ties to secure to existing cables in the engineroom.Max. fuse value 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

Protect(Red)

Power(Green)

Ground Terminal ( GND )

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ImportantUse either the low level or the high level input, donot use both at same time.Low level inputUse a pair of shielded stereo audio cables with RCAtype jack. Most trunk-mount amplifiers need a 20feet RCA cable ( appr 5 – 6 meters). Most under theseat installations require 12feet ( 2 – 3 meters) RCAcables. Avoid placing the RCAcable close to speaker cables,power cables and remotecontrol cable. Connect to in-put socket A & B.

High Level InputConnect left and right speaker wires coming fromthe car stereo to the high level input as shown. Youmust connect both plus and minus as the inputs arebalanced, connecting plus only gives lower level andbad sound quality. By changing the polarity of plusand minus, you can change the phase.

Hi level input plug on amp.

Automatic turn on when using high level input.With the Hi/Low input swich set to Hi, the amplifier turnson automatically on high input. You dont need to connecta separate remote wire from your head unit.When using High Level input:Set the switch to position ”Hi / Level”When using Low level input:Set the switch to position ”Low / Level”If the switch is set to wrongposition, the amplifier stillworks, but the risk fordisturbances or distortionincreases.

Input and controls

5

Input Level control

Subsonic filter

The Subsonic filter blocksthe very deepest frequenciesfrom reaching the subwoofers.It has a variable frequencyfrom 15 to 50 Hz. A typical set-ting is 25-30 Hz when usedwith subwoofers.The filter canbe switched IN-OUT.

Low Pass Filter

High Input White : A ch.+White/Black : A ch.-Grey/Black : B ch.-Grey : Bch.+

Input WiringInputs may be low level from the RCA output of thecar stereo or high level from the car stereo speakeroutput.Low level = RCA is to prefer for the best soundquality.

The input level control, 5V – 0,25V, matches the output of your ra-dio to the input of the amplifier. Afterinstallation is complete, make surethe input of the amplifier is turneddown all the way ( counter-clockwise at 5V ). Play a tape orCD, make sure all bass or treblesettings or equalizer are flat, andturn the volume of the radio up untilyou just start to hear distortion.Turn the volume control down justa bit. On the amplifier increase theinput level control ( clockwise or tothe right ) until you just start to heardistortion, then back the levelcontrol just a bit. Now your radioand amplifier levels are matched.

Level

5 V 0,25 V

Hi levelLow level

Subsonic

Off On

40Hz 100Hz

15Hz 150Hz

LPF

Off 24 dB

80Hz 200Hz

50Hz 500Hz

12dB

The LPF ( low pass filter )mostly used for subwoofers. Itwill allow low frequencies onlyand blocks higher frequencies.A typical setting is 50 – 80 Hz.The filter can be switched inand out and you can selectbetween two different slopes,12 dB/ octave or 24 dB/ octave.Choose the slope and the set-ting that sounds best in yourcar.

CA12

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CA12

Speaker and powerconnection

TestingBefore you finish the installation, you should do thefollowing tests to make sure the wiring is correctand everything is operating properly.

Test power wiring 1. Turn on the head unit but do not turn up the

volume. The amplifier power light shouldcome on. If not, check the remote and +12volt wires. Also check the groundconnection.

2. Turn up the head units volume slightly. Allspeakers should operate. if not, checkwiring connections at amplifier andspeakers.

Reconnect BatteryWhen wiring is complete,reconnect the batterynegative terminal.

NOTE!Minimum speaker load is one (1) ohm. You canconnect up to four 4 ohm subwoofers or two 2 ohmsubwoofers to the amplifier. Loads or speakerimpedances less than 1 ohm could result in poorsound quality and/or damage to amplifier.

The drawing shows how to connect four 4 ohmsubwoofers to the speaker terminal.

6

RCA Output

Use RCA Outputs toconnect additionalamplifiers.

Input Output

A A

B B

Phase control

The phase control can be setcontinuously from 0 - 180 degrees. Thisis very useful when you want to adjustthe bass sound for best front stage image.Start on 0 and turn the control slowlyclockwise until you experience the basssound coming from the front.

You may have to change the polarity ofthe speaker connection to get the bestresult.

Phase

0o 180o

4 Ω

4 Ω

4 Ω

4 Ω-

-

-

- +

+

+

+

Battery

Fuse

Distribu-tion block

Power Cap

To Remote onhead unit

The speakerterminals aredoubled foreasier connectionof moreof two orm o r esubwoofers. The+ respective -terminasls arei n t e r n a l l yconnected toeach other. It isnot possible toconnect CA12 inbridge mode.

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NOISE PROBLEMS

WHINING NOISE VARYING WITH ENGINEREVOLUTIONS:

Do this:1. Rewire the power supply (12 V) to source

unit direct from battery.2. Rewire ground wire from source unit toclean 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 arepicking up noise. Test this by laying a newcable over the seats and reconnecting to theamplifier. If the noise does not return, re-route original cable away from source ofinterference.If noise remains regardless of cable position,try to use so called Quasi-balanced signalcables. DLS PRO or ULTIMATE cables arequasibalanced.

SPEAKER POLARITY CHECK.

All speakers in a car audio system should beconnected in phase (the same polarity). All spea-ker cones must move in the same direction. Out ofphase speakers will cause a lack of bass, and apoor 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 observethe movement of the cone. The cone should moveoutwards when the wire touches the battery, andinwards when the battery is removed. If it is theother way around, the speaker has been connectedbackwards and it must be removed and connectedcorrectly.If your system also has a subwoofer connectedthrough a passive 6 or 12 dB crossover, try toconnect this with various polarity and judge whatsounds best. The phase shift in passive crossoverssometimes makes it necessary to change polarity.

+

-

+

-

Battery1,5 Volt

Professional Tip:Professional Tip:

Professional Tip: Professional Tip:

Installing in trunkWhen installing the amplifier in the trunk, run thepower wires along the same path as the othervehicle wiring. Many cars have insulated channelsfor wiring. you will have to remove the door sill trimand the carpet.

Securing wiresUse wire ties to bundle together when possible.(But never bundle speaker wires or signal cablestogether with power wires.

Professional Tip:

Professional Tip:

Speaker and power wiresDo not run speaker and power wires next to eachother. Power wires can generate a ”siren” sound inthe speakers. Runs speaker and power wires onopposite sides of the car.

Crimp connectionsPurchase crimp connectors and crimping tool.Connectors are color coded.

1. Strip 1/4 inch (6 mm) of insulation from the wire.2. Insert into connector3. Crimp tightly

7

CA12

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DLS Svenska ABP.O. Box 13029

SE-40251 Göteborg, SwedenTel: +46 31 840060Fax: +46 31 844021E-mail: [email protected]

www.dls.se

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