LD Systems LDDJ Serie Bedienungsanleitung Seite 7

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1 POWER SWITCH
Always turn the volume down to zero on both channels before turning the amplifier on and off (knobs all the
way to the left).
2
VOLUME CONTROLS CHANNEL A AND B
Turning the knob to the right increases and turning it to the left decreases the volume.
In bridge mode (BTL), the volume of the power amplifier is controlled by the volume control for Channel A.
3 POWER LED
Lights up if the speaker system is switched on and properly connected to the power mains.
4 CLIP LED CHANNEL A AND B
Lights up if the power amplifier is operating in the clipping range. This should be avoided by reducing the
input level, because otherwise distortion may result which can both have a negative effect on the resulting
sound and cause damage to the connected speakers.
5 PROTECT LED
Lights up after power-on as long as the power-on delay is active. After the Protect LED goes out, the power
amplifier is ready for operation.
The Protect LED lights up when one of the power amplifier protection circuits is active. To protect the power
amplifiers and the connected speakers, the speaker outputs are deactivated in protect mode. Once the
source of the trouble has been eliminated (e.g., overloading or a short circuit at the speaker output), after a
short time, the power amplifier returns to normal status, the Protect LED goes out, and the speaker outputs
are reactivated.
If the Protect LED does not go out after a short time even if all inputs and outputs have been disconnected,
there is an internal fault. In this case, turn off the power amplifier, disconnect it from the power mains, and
hand it over to an authorised service centre.
FRONT / CONTROLS:
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