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3. Connecting a 3-way
system using active crossover
between woofer and midrange.
You can use all 3-way speaker
systems in this example. You can also use
any 2-way system in combination with a
separate mid bass speaker.
Speaker impedance must be 4 ohm.
If the head unit has only one pre out a
Y-cable must be used.
For power cable, speaker cable and fuse
size selection see page 4.
FM1 107,3
+
+
-
-
Pre out
front
DC-FEED DLS A4
HP-filter HP-filter HP-filter LP-filter LP-filter LEVEL
OUT
IN
90
50 125
1X
3X
3,5V
7,0V 0,2V
100
20 200
OUT
IN
FRONT SPEAKERS
+LEFT- +RIGHT-
FRONT INPUTS
LEFT RIGHT
REAR SPEAKERS
+LEFT- +RIGHT-
REAR INPUTS
LEFT RIGHT
OUT
IN
OUT
IN
100
20 200
3,5V
7V 0,2V
100
20 200
LEVEL LP-filter LP-filter LP-filter HP-filter HP-filter
1X
2X
Button in Button out
Button in
HP-filter setting: 400 Hz
LP-filter not in use
Button in
If you use both DC-inputs for the DC feed,
connect a Fuse block with two 70 Amp fuses, one
for each input.
+
+
-
-
Tweeters
Passive crossover boxes
for tweeters and midrange
Button out
Button in
HP-filter not in use
LP-filter setting: 400 Hz
+
+-
-
Midrange
drivers
Bass/midbass
drivers
If you have problems
with the mid bass dri-
ver ”reaching the bot-
tom” (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.
Use a 2 mm hexagon key to speaker terminals.
Use a 2,5 mm hexagon key to DC input terminals on A1
Use a 4 mm hexagon key to DC input terminals on A2, A3, A4
Fuse
150 A
Power
capacitor
Fan 12 V
RIGHT FUSES
25 A x 2
25
25
25
25
LEFT FUSES
25 A x 2
+
Battery
12 volt
To remote
on stereo / CD
POWER IN
BAT+ REM GND
POWER IN /POWER CAP
GND FAN OUT POS+
PROTECT
POWER
ULTIMATE A4
16