Onyx, Mono amplifiers ref1.800, Mono subwoofer – MB QUART REF4.50 User Manual
Page 7: Designated mono output from head unit

Mono Amplifiers
REF1.800
6
FEATURES:
- 1 Set of RCA inputs
- LEVEL: Variable sensitivity from 0.2V to 5V
- BASS EQ: Adjustable 45Hz bass boost from 0dB to 12dB
- SUBSONIC: Variable from 15Hz to 55Hz
- LOW PASS: Variable from 40Hz to 150Hz
- MASTER OUT: Mono RCA signal to Slave amplifier when linking.
- SLAVE IN: Mono RCA signal in from Master amplifier when linking.
- MODE: Selectable Slave In and Master Out selection when linking amplifiers.
- REMOTE: Connection for dash mount level control.
Interconnect cable checklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA cables.
Control checklist:
Refer to the section “Settings for Best Performance”
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
simplifying the hookup of multiple speakers. These amps are mono, 1 channel, amplifiers
Minimum final loudspeaker impedance: 1-Ohm.
which have multiple positive and negative connections for ease of wiring. The 2 positives
are the same internally and the 2 negatives are the same internally.
ONYX
P
O
W
E
R
IN
P
U
T
G
N
D
R
E
M
B
A
T
T
+
12
V
S
P
E
A
K
E
R
O
U
T
P
U
T
-
-
+
+
F
U
S
E
MONO
SUBWOOFER
REMOTE TURN-ON
CHASSIS GROUND
TO BATTERY + 12 Volts
VIA FUSE
P
O
W
E
R
P
R
O
T
E
C
T
INPUT
R
Master
Slave
Out
In
L
5V 0.2V
LEVEL
15Hz 55Hz
SUBSONIC
REMOTE
40Hz 150Hz
LOW PASS
0dB 12dB
BASS
BOOST
MODE
Slave
In
Master
Out
DESIGNATED
MONO OUTPUT
FROM HEAD UNIT
IN
P
U
T
R
M
as
te
r
S
la
ve
O
u
t
In
L
5
V
0
.2
V
LE
V
EL
1
5
H
z
5
5
H
z
SU
B
SO
N
IC
R
EM
O
TE
4
0
H
z
1
5
0
H
z
LO
W
P
A
SS
0
d
B
1
2
d
B
B
A
SS
B
O
O
ST
M
O
D
E
S
la
ve
In
M
as
te
r
O
u
t
MBQR-2
MIN MAXX