Bedienungsanleitung DLS RA 40 (Seite 5 von 12) (Englisch)

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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 RCA input

sockets.

Set the input selector switch

to position ”Low level”.

High Level Input for ch 1 & 2 on RA20 and RA40

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.

High level input socket for CH 1 & 2

Hi level input

socket on amp.

Automatic turn on when using high level input.

With the ”Input selector switch” set to High level

and the ”High level Auto Start” switch set to IN,

the amplifier turns on automatically on high input.

You don´t need to connect a separate remote wire

from your head unit.

If you want to use high level

input but use a remote start

wire, just set the ”High level

Auto Start” switch to OUT.

Input and controls

Input Wiring

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.

RA40 high level input for ch 3 & 4.

The RA40 four channel amplifier is connected

likewise, however we have four channels.

You can feed all four channels using high level in-

put, or feed two channels from RCA and two

channels using high level input from rear speaker

cables.

RA20 & RA40

CH2 CH1

CH4 CH3

Hi level input plug.

Hi level input

socket on

amp.

Hi level input plug.

Green: Left +

Black: Left -

Black: Right -

Grey: Right +

Green: Left +

Black: Left -

Black: Right -

Grey: Right +

To ensure best possible performance from the

amplifiers a switch is installed to select between

Hi and Low input.

When using High Level input:

Push in the button to position

”High Level”

When using Low level input:

Push out the button to position

”Low Level”

To ensure best possible performance from the

amplifiers when used with high level input a switch

is installed to select between Automatic amplifier

start and remote wire start.

When using High Level input with

automatic start:

Push the button to position IN

When using High level input with

remote wire start:

Push out the button to position OUT

NOTE!

Some head units use BTL output IC:s that have a

constant 12 Volt + on the speaker terminal, also

when shut off (the Power LED indicator lights

constantly even when the head unit is off). In this

case you have to use a separate remote wire

connected to the REMOTE-terminal instead.

High / Low level input switch

Hi level auto start switch

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DLS RA 40 Seite 5

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