User manual

GTX2200
21
FUNCTIONS AND OPERATIONAL CONTROLS
1
POWER/PROTECT
If the POWER LED lights up, the amplifier is ready for operation.
If the PROTECT LED lights up, a malfunction is indicated. Attend in this case the chapter TROUBLE SHOOTING.
2
4
The CH1/2 X-OVER switch selects the required operation mode of the amplifier.
Position LP: Lowpass mode (the higher frequencies will be eliminated. Adjustable by the lowpass controller.)
Position HP: Highpass mode (the higher frequencies will be eliminate. Adjustable by the highpass controller.)
Position FULL: Fullrange mode (the whole frequencies will be amplified).
5
The LOW PASS controller adjusts the cut-off point of the frequency range to above. The cut-off frequency is continuously
adjustable from 40 Hz to 150 Hz.
6
7
The HIGH PASS controller adjusts the cut-off point of the frequency range to below. The cut-off frequency is continuously
adjustable from 60 Hz to 1200 Hz (1.2 kHz).
8
The LEVEL INPUT controller adjusts the input sensitivity of the amplifier to align the audio signal from the head unit.
The input sensitivity is adjustable from 4 to 0.2 Volts.
The LINE INPUT RCA jacks must be connected with the RCA output jacks of the headunit.
9
The LINE OUT RCA jacks provide a linear fullrange audiosignal to supply an additional amplifier.
3
The BASS BOOST controller adjusts the bass boost enhancement continuously from 0dB to +12dB at 45 Hz.
The High Level Input is suitable to connect the amplifier inputs with speaker wires, if your headunit is not equipped with pre-
amplifier RCA outputs. Never use the High Level Input and the RCA inputs at the same time. This may damage the amplifier
seriously. Attend therefor the descriptions on page 28.
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