Ground Zero PLUTONIUM SERIES User Manual

6
Controls and functions GZPA 2SQ
BIAS adjustment
Adjusting the BIAS setting influences the operation mode and sound of the amplifier. Increasing the BIAS
setting clockwise leads to a warm sound experience with wide stereoscopic sound comparable to the
performance of a Class A amplifier with increased current consumption und heat generation. Reducing the
BIAS setting counterclockwise results in direct and clear music reproduction. Depending on the speaker´s
characteristics and the mounting positions, the adjustment is up to the listener´s taste of music reproduction.
The BIAS setting however, does not influence the general output power of the amplifier
LED illumination
Optionally, the LED illumination of the Ground Zero logo can be switched off. For this purpose, the jumper
positioned on the back side of the top aluminum cover needs to be removed from the illumination pc board.
1
Power terminal
GROUND Vehicle ground connection
REMOTE Remote connection (turn-on voltage)
BATT+ 12 Volt (Battery)
2
Speaker terminal
Speaker wire connection
3
Signal input
RCA wire connection
4
Input sensitivity
Control for correct input sensitivity adjustment
5
High pass switch
Switch to activate the high pass filter
6
High pass multiplier
Switch to multiply (x10) the high pass filter frequency range
7
High pass frequency
Control to adjust the correct high pass filter frequency
8
Low pass switch
Switch to activate the low pass filter
9
Low pass multiplier
Switch to multiply (x10) the low pass filter frequency range
10
Low pass frequency
Control to adjust the correct low pass filter frequency
11
Bypass function
Switch to deactivate both crossover filters (Direct signal path)
12
Phase switch
Switch to activate the phase adjustment control
13
Phase adjustment
Control to adjust the correct phase
14
BIAS adjustment
Control to adjust the BIAS setting (check the BIAS adjustment info below)
15
Status indication
POWER (white) indicates the correct operation mode
PROTECT (red) indicates a defect / activated protection mode

Ground Zero PLUTONIUM SERIES Specifications

General

Brand	Ground Zero
Model	PLUTONIUM SERIES
Category	Amplifier
Language	English