Crunch DRA1050.4, User Manual, Page: 5 / 10

DRIVE
DRIVE
REMOTE TURN-ON
CHASSIS GROUND
TO B 12 volts VIA FUSE
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R
ID
G
ED
+
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EF
T
-
+
R
IG
H
T
-
G
N
D
R
EM
+
12
V
FULL RANGE
SPEAKERS
FULL RANGE
STEREO LINE INPUT
F
U
L
L
L
P
F
M
O
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-O
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E
R
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B
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.2
k
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0
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z
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T
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R
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O
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L R
L
IN
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O
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IN
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IN
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REMOTE TURN-ON
CHASSIS GROUND
TO B 12 volts VIA FUSE
B
R
ID
G
ED
+
L
EF
T
-
+
R
IG
H
T
-
G
N
D
R
EM
+
12
V
F
U
L
L
L
P
F
M
O
D
E
X
-O
V
E
R
B
A
S
S
E
Q
0
d
B
1
2
d
B
H
P
F
L
P
F
H
P
F
6
0
H
z
1
.2
k
H
z
3
0
H
z
2
5
0
H
z
S
T
E
R
E
O
M
O
N
O
L R
L R
L
IN
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O
U
T
L
IN
E
IN
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U
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L
A
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.2
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DRA850.2 / DRA1150.2 / DRA4050.2 2-CHANNEL AMPLIFIER APPLICATIONS
Stereo high pass with mono low-pass in a 2 way active, or bi-amplified system
Crossover frequency control checklist: In this application we will use a 2 channel amplifier for the high frequencies, and a second
Highs amplifier: one for the low frequencies, or mono sub bass. Please consult the speaker specifications
- HI PASS: 100 Hz to determine maximum amplifier power requirements.
- LOW PASS: N/A
Interconnect cable checklist:
Connect the inputs of the HIGHS amplifier to a Radio/CD with good quality RCA cables.
Lows amplifier:
Connect the LINE OUT of the HIGHS amplifier to the inputs of the BASS amplifier with a - HI PASS (Subsonic filter): 10 Hz to 40 Hz
stereo RCA to RCA cable.
- LOW PASS: 80 Hz
Mono bass woofer wiring:
Please note that these frequency points are suggestions only. Refer to the loudspeaker
Connect the mono speaker positive terminal to the LEFT +, and its negative terminal to manufacturer specifications and the section “Setting up systems after installation for best
RIGHT -.
performance”
Switch setting checklist:
Level control checklist:
- Highs amplifier: X-OVER switch in the HPF position. - Refer to the section “Setting up systems after installation for best performance”
MODE switch in the STEREO position.
Minimum final loudspeaker impedances:
- Lows amplifier: X-OVER switch in the LPF position.
- 2-Ohms per channel stereo. MODE switch in the MONO position.
- 4-Ohms mono bridged.
STEREO
INTERCONNECT
RCA CABLE
MONO BASS
SPEAKER