Ground Zero GZUA 2.250SQ-PLUS, Руководство пользователя

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4
Controls & Features GZUA SQ-PLUS series amplifiers
1 INPUT sockets
Input sockets to connect RCA wires - to avoid any malfunction, it is recommended to use
only high quality RCA cables
Cable recommendation: GZCC X-TP series (available lengths 0.57 / 1.14 / 3.14 / 5.49 m)
2 LEVEL control Controller to adjust the input sensitivity of the according pair of channels
3
Crossover activation switch* Push the switch to the ON position to activate the high pass filter
Crossover multiplication switch
Push the switch to the X10 position to multiply the selected frequency by the factor of 10
The crossover frequency range will change from 20 – 400 Hz to 200 – 4000 Hz
HIGH PASS filter controller*
Adjust the required crossover point using the controller. Frequencies below the selected
crossover point will be filtered (20 to 400 Hz / 200 to 4000 Hz).
4
Crossover activation switch* Push the switch to the ON position to activate the low pass filter
Crossover multiplication switch
Push the switch to the X10 position to multiply the selected frequency by the factor of 10
The crossover frequency range will change from 20 – 400 Hz to 200 – 4000 Hz
LOW PASS filter control*
Adjust the required crossover point using the controller. Frequencies above the selected
crossover point will be filtered (20 to 400 Hz / 200 to 4000 Hz)
* BANDPASS feature
Bandpass filter is activated as soon as high and low pass switches are in the ON position
Depending on the multiplication switch the bandpass filter range varies from 20 to 4000 Hz
5 SPEAKER terminal To connect the speaker wires in stereo or bridged mode
6 Status LED
POWER -> white -> ok (correct operation)
PROTECT -> red -> error / protection
7 Fuses Replace defective fuses always using fuses with identical value
8
POWER supply
terminal
BATT +
Connect to a positive power wire from the battery terminal (12 Volt)
REMOTE
Connect to the remote output wire of the head unit or DSP/pre-amplifier
GND
Connect to a wire from the ground terminal of the battery or to chassis ground
Additional Controls & Features GZUA 2.250SQ-PLUS
9 PHASE control Activating switch and controller (0 to 180˚)
10 BASS BOOST control Controller to adjust the bass boost level ( from 0 to +12 dB @ 45 Hz)
11 BASS REMOTE socket Connect the wire of the bass remote control
Additional Controls & Features GZUA 6.200SQ-PLUS
9
10
INPUT MODE 2 switch
INPUT MODE 4 switch
INPUT MODE 2 “OFF” and INPUT MODE 4 ”OFF”
Each input channel provides signal to the according channel
INPUT MODE 2 “ON” and INPUT MODE 4 ”OFF”
Input CH1 provides signal to CH1 & CH3 & CH5
Input CH2 provides signal to CH2 & CH5 & CH6
INPUT MODE 2 “OFF” and INPUT MODE 4 ”ON”
Input CH1 provides signal to CH1
Input CH2 provides signal to CH2
Input CH3 provides signal to CH3 and CH5
Input CH5 provides signal to CH5 and CH6
BIAS setting
The BIAS setting affects the operation mode of the amplifier.
It is continuously adjustable from <MIN> (actual Class A/B mode) to <MAX> (close to Class A mode).
An amplifier in Class A mode sounds warm and creates a pleasant atmosphere. Compared to that, the
Class A/B mode of an amplifier sounds more direct and dynamic. Depending on the BIAS setting, the
current consumption of the amplifier is growing the closer the operation comes to the Class A mode
leading to an increased temperature. The power rating however, remains identical. The BIAS can be set
using the control on the bottom of the amplifier for each pair of channels, independently.