Bedienungsanleitung DLS ra20 (Seite 9 von 12) (Englisch)

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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.

RA20 & RA40

Two fullrange speakers connected in bridge

mode to RA40

Left speaker Right speaker

Filter settings channel 1, 2, 3 & 4

With the HP-filter in OUT position

the amplifier allows the speakers

to play fullrange. If you for some

reason want to limit the low bass

reproduction switch on the HP-

filter. The typical setting is then

around 60 – 80 Hz. The LP-filter

should be in OUT-position.

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DLS ra20 Seite 9

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