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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.
The amplifier has separate
input sockets for front, rear
and sub channel.
There are two switches
located under the amplifier bottom plate. With these
switches you can choose different ways to connect
the RCA input sockets internally. You can use either
one, two or three separate RCA cables for the feed.
Use any of the following:
1. One RCA cable feed to all amplifier inputs.
If you want to use only one RCA cable to feed all
inputs set the switches like in the example below:
Input and controls A7
Input Wiring
DLS A7 has a more sofisticated input configuration and
can be connected in different ways which are described
here. Inputs are low level from the RCA output of the
car stereo head unit.
6
ULTIMATE A7
FRONT SPEAKERS
+LEFT- +RIGHT-
REAR SPEAKERS
+LEFT- +RIGHT-
SIGNAL INPUTS
FRONT REAR
LEFT RIGHT LEFT RIGHT
3,5V
7V 0,2V
3,5V
7V 0,2V
LEVEL
x20 change
by bottom switch
240
80 400
Hz
OUT
IN
HP-filter
240
80 400
Hz
OUT
IN
HP-filter
2
0,3 4
kHz
OUT
IN
LP-filter
LEVEL
x10 change
by bottom switch
Amplifier front
x 20
x 1
HP
x 1
x 10
LP
Input
Front Rear
Input
Sub
Front
input to
rear & sub
Rear
input to
sub
Sub input
from rear
Sub input
separate
A singhle RCA feeds all channels
2. Two RCA cables. One to front input and the
other to rear and sub inputs.
If you want to use a separate RCA cable to the front
channels and another RCA cable to rear and sub
channels connect the cables and set the switches
like in the example below:
Separate input cables to front and rear. Then
internally connected to the sub channel.
Amplifier front
x 1
HP
x 1
x 10
LP
Input
Front Rear
Input
Sub
Front
nput to
rear & sub
Rear
input to
sub
Sub input
from rear
Sub input
separate
x 20
3. Three RCA cables. One to front input, one to
rear input, and the third to sub input.
If you want to use separate RCA cables to all inputs,
set the switches like in the example below:
Amplifier front
x 20
x 1
HP
x 1
x 10
LP
Input
Front Rear
Input
Sub
Front
input to
rear & sub
Rear
input to
sub
Sub input
from rear
Sub input
separate
Separate input cables to all channels.
6


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