Ground Zero HYDROGEN SERIES - Input and Level Controls; Crossover Controls; Output and Status Indicators; Amplifier Operation

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Controls and functions
1
Speaker terminals
For connection of the speakers
2
Power terminals
GND -> Ground connection
REM -> Remote antenna terminal
BATT -> +12 Volt
3
Status indication
WHITE – OK
RED – Error
4
RCA inputs
Terminal for connection of the RCA wires.
To avoid failure, please use high quality RCA wires.
5
Input level controller
With this controller you can adjust the input sensitivity.
6
Bass boost controller
For adjusting of the bass boost level in the range from 0 to +12 dB (45 Hz)
(Channel 3/4)
7
Mode switch
Adjust the crossover for the chosen utilization.
LPF – Channel 1/2: Filter fixed @ 80 Hz. Only bass frequencies (below 80 Hz)
will be reproduced.
Channel 3/4: Only bass frequencies (below 30 - 250 Hz) will be reproduced.
At LPF adjustment, also the Highpass (Subsonic) is activated.
This equals a Bandpass filter of 5 – 250 Hz.
FULL – All frequencies will be reproduced.
HPF – Only middle and high frequencies (over 5Hz – 500Hz) will be
reproduced.
8
High pass controller
(Subsonic)
Adjust the variable highpass crossover frequency between 5 and 250 Hz (Ch
3/4) and 40 Hz – 3 kHz (Ch 1/2).
9
RCA output
For connection of additional amplifiers in fullrange operation.
10
Low pass controller
Adjust the variable lowpass frequency between 30 – 250 Hz (Ch 3/4)
80 Hz fix @ channel 1/2.
11
Phase shift controller
This controller allows you to fit the subwoofer channel in-phase to the front
system.
12
Remote control input
For connection of the bass remote control.
Turning on the amplifier
The amplifier automatically turns on a few seconds after you turn on your radio.
Note: Your amplifier temporarily shuts down if it gets too hot, then restarts automatically once it cools
(At about 80° / 176° F).
Adjusting the audio level
1. LEVEL (Min/Max): Turn fully counter- clockwise to MIN position
2. Turn the auto sound system's volume control to about two-third of its full range.
3. Adjust LEVEL to a comfortable listening level.