Filter
Top Products
Example 3: System with front speaker system, rear fill speakers and one
or more subwoofers
21
Filter settings:
Front: HP-filter 80 Hz or fullrange
Rear: HP-filter 125 Hz
LP-filter IN. Setting 6 kHz with
x10 switch in position x10
Sub: LP-filter 70-80 Hz
Use one, two or three RCA-cables for
signal from head unit to amplifier.
See page 5 for detailed instructions
Button inButton in
Highpass filter 125 Hz
Lowpass filter setting 6 kHz
Switch settings in this example
HP: x1
LP: x10
ULTIMATE A7
Rear fill speakers 125 Hz to 6 kHz
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
Two-way front system
WIRING EXAMPLES A7
DC - FEED DLS A7
For DC-feed, see page 4
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
Highpass filter 80 Hz
Filter
box
+
-
+
-
-
+
-
+
Filter
box
Lowpass 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.