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Crunch GPX 1000.4 Manual

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11
ENG
POWER SUPPLY AND TURN ON CONNECTION (FIG. 2)
(1) GND terminal for the ground
(2) REMOTE terminal for the turn on connection
(3) +12 V terminal for the positive-connection of the battery
(4) Vehicle’s battery
(5) In-Line Fuse (not included in the scope of delivery)
(6) Turn on wire from the headunit or the electrical antenna
4-CHANNEL OPERATION (FIG. 3)
If you want to run the amplifier with the 4 line output channels from the headunit to drive 4 loudspeakers,
connect the following setup:
(1) To the headunit, line output front left
(2) To the headunit, line output front right
(3) To the headunit, line output rear left
(4) To the headunit, line output rear right
(5) Loudspeaker front left
(6) Loudspeaker front right
(7) Loudspeaker rear left
(8) Loudspeaker rear right
FIGURES (P. 28-30)
The Operation-LED (POWER, fig. 1, 12) lits up, if the amplifier is in operation.
The protection LED (PROTECTION, fig. 1, 12) lits up, when the amplifier is overheated, or a short
circuit occurs resp. a too low impedance load is connected to the speaker outputs. If this events, the
internal built-in protection circuit shuts down the amplifier automatically. The amplifier should work again
properly after you have solved the problems.
PROTECTION CIRCUIT
CONNECTIONS AND CONTROLLERS (FIG. 1)
(1) Highpass filter controller for the rear channels
(2) Selector FULL / LPF (Lowpass) / HPF (Highpass) for the rear channels
(3) Lowpass filter controller for the rear channels
(4) Selector for the stage-to-stage enhancement of the bass level for the rear channels
(5) Gain level controller for the rear channels
(6) Audio signal inputs for the rear channels
(7) Audio signal outputs to run additional amplifiers
(8) Audio signal inputs for the front channels
(9) Gain level controller for the front channels
(10) Selector FULL / HPF (Highpass) for the front channels
(11) Highpass filter controller for the front channels
(12) Protection-LED and Power-LED
… 11 …


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