VARIABLE BASS BOOST
LINE IN
LOW LEVEL INPUT
ON
By using the BOOST controller [ 11 ] you are able to increase the bass enhancement from 0 to 12 dB. ATTEN-
OFF
TION: Use the BASS BOOST wisely!
L
L
R
PHASE SHIFT SWITCH
R
–
The PHASE SHIFT switch [ 12 ] allows to switch the phase from 0° to 180° to match the output signal with the
vehicle's interior acoustic.
LEVEL
VARIABLE LPF FILTER
AUTO TURN ON
Set the desired crossover frequency by using the controller LPF [ 13 ]. Thus to that only the frequencies below
ON
the chosen crossover frequency will be amplified and the subwoofer plays more precisely and efficient.
OFF
MIN
MAX
ZRX220A
ACTIVE SUBWOOFER SYSTEM
L
+
R
+
BASS LEVEL REMOTE CONTROLLER
HI LEVEL INPUT
With the included bass level cable remote controller [ 15 ] allows to adjust the bass level e.g. out of the driver's
seat. Connect the remote controller and the BASS LEVEL CONTROLLER terminal [ 14 ] with the enclosed
cable.
LPF
BOOST
14
40Hz
150Hz
0dB
+12dB
PHASE
PROTECTION CIRCUIT
BOOST
The PROTECT LED [ 16 ] lights up red, when the amplifier is overheated, or a short circuit occurs respective
a too low impedance load is connected to the speaker outputs. If this events, the internal built-in protection
circuit shuts down the amplifier automatically. The amplifier should work again properly after you have solved
the problems.
0dB
+12dB
The POWER LED [ 17 ] lights up green, if the amplifier is in operation.
BASS LEVEL
CONTROLLER
10
LEVEL
LPF
11
MIN
MAX
40Hz
ZRX220A
ACTIVE SUBWOOFER SYSTEM
12
LPF
BOOST
LINE IN
LOW LEVEL INPUT
40Hz
150Hz
0dB
L
LEVEL
13
L
MIN
R
R
–
PHASE
POWER INPUTS
0°
180°
BASS LEVEL
POWER INPUTS
0°
CONTROLLER
180°
16
BOOST
150Hz
0dB
+12dB
PHASE
0°
180°
+12dB
LPF
BASS LEVEL
CONTROLLER
MAX
40Hz
150Hz
ZRX220A
ACTIVE SUBWOOFER SYSTEM
GND
REM
+12V
PROTECT POWER
FUSE
GND
REM
+12V
PROTECT POWER
PHASE
POWER INPUTS
0°
180°
BASS LEVEL
CONTROLLER
POWER INPUTS
PHASE
0°
180°
BOOST
0dB
+12dB
BASS LEVEL
CONTROLLER
FUSE
BASS LEVEL
MIN
MAX
17
FUSE
GND
REM
+12V
PROTECT POWER
FUSE
GND
REM
POWER INPUTS
+12V
PROTECT POWER
15
FUSE
GND
REM
+12V
PROTECT POW