Owner's Manual

GROUND ZERO GZRA 2HD
RADIOACTIVE SERIES
Controls & Features
1
Power terminal
+12V To be connected to the positive terminal of the battery
REM To be connected to the remote output of the head unit*
(*not required in high-level input mode)
GND To be connected to the vehicle´s ground
(or directly to the negative terminal of the battery)
2
Fuse(s)
If necessary to replace a defective fuse, it´s strongly recommended to
use a fuse with identical value
3
Speaker terminal
To connect the speaker wires
min. 2 ohms load in stereo mode
min. 4 ohms load in bridged mode
4
Bass boost control
To increase the bass level at 45 Hz up to 12 dB
5
Line input (RCA)
Input sockets to connect RCA wires
Important note: High-level and RCA inputs should
never
be used
simultaneously! This may cause serious damage to the amplifier
6
High-level input
Head units without RCA pre-amplifier output signal can be connected
using the high-level input to connect the speaker output of the head
unit directly.
If used, the amplifier turns on automatically (auto-on feature)
The remote input of the power supply terminal remains unused
Important note: High-level and RCA inputs should
never
be used
simultaneously! This may cause serious damage to the amplifier
7
Sensitivity control
Controller to adjust the input sensitivity
8
Low pass filter
To adjust the required crossover point. Frequencies above the selected
crossover point will be filtered (40 Hz to 4000 Hz)
9
High pass filter
To adjust the required crossover point. Frequencies below the selected
crossover point will be filtered (40 Hz to 4000 Hz)
10
Status indication
POWER (green) ok (correct operation)
PROTECT (red) error (protection mode)
11
Remote socket
To connect the wired bass level remote control (available separately)