DLS A1 Specifications download pdf (Page 20)

20

Example 2: Speaker wiring with active crossover to a front speaker system

and one or more subwoofers

Filter settings:

Front: HP-filter 4 kHz with x20-

switch in x20 position

Rear: HP-filter 80 Hz or fullrange

LP-filter IN, setting 4 kHz with

x10 switch in position x1

Sub: LP-filter 70-80 Hz

Use one, two or three RCA-cables

for signal from head unit to amplifier.

See page 6 for detailed instructions

Button in

Button in

Switch settings in this example

HP: x20

LP: x1

ULTIMATE A7

Amplifier front

x 20

x 1

HP

x 1

x 10

LP

Input

Front Rear

Input

Sub

Input to

front, rear

& sub

Input to

rear

& sub

Sub input

common

Sub input

separate

WIRING EXAMPLES 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

FM1 107,3

Pre out

front

Pre out

rear

+

+-

-

Button in

HP-filter setting:

4 kHz

Tweeters with active high-pass

x-over setting at 4 kHz

HP-filter setting: 80 Hz

LP-filter setting: 4 kHz.

Midbass/midrange speakers with

active low-pass x-over setting

at 4 kHz

+

+-

-

DC - FEED DLS A7

For DC-feed, see page 4

LP-filter: 70- 80 Hz

Subwoofer

2 - 4 ohm

Remote Bass Level

& Phase control

Phase

Level

SUB-WOOFER

+ SPEAKERS -

Low-pass LEVEL

3,5V

7,0V 0,2V

90

50 125

O 180

Degree

90

PHASE

FILTER

FM1 107,3

Level

OUT

IN

SIGNAL INPUT

LEFT SUB RIGHT

Remote Bass

If you have problems with the mid

bass driver ”reaching the bottom”

(the voice coil touches the bottom

pole plate) at high volumes, use

the HP-filter to avoid this with a

setting at 50 - 80 Hz or higher.

Make your own tests.

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