Features
Front Panel
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1. Power Switch: Press this switch to power DN-280 on or off. Make sure the Master knob is all
the way down before powering on. The power LED will turn on when DN-280 is powered on.
2. Master: Turn this knob to control the volume level of the audio signal sent to
DN-280's Speaker Output.
3. Signal/Clip/Protection LEDs: These lights show the signal status of the Channel Input:
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Signal LED (SIG): The Signal LED will be lit green when the signal coming from the Channel
Input is at an optimal volume level.
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Clip LED (CLIP): When the Clip LED is lit red, the Channel Input's signal is "peaking" (higher
than 0 dB). To prevent the "clipping" (distortion) that can result from a loud input signal, turn the
Master knob counter-clockwise or reduce the volume on the device plugged into the Channel
Input.
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Protection LED (PROT): If the Protection LED turns red, DN-280 is in heat protection mode
and will not output sound. To restore sound output, reduce DN-280's temperature by making
sure there is good ventilation and/or decreasing the volume.
4. Speaker Bass: Turn this knob to control the level of the low (bass) frequencies sent from DN-
280's Speaker Output.
5. Speaker Treble: Turn this knob to control the level of the high (treble) frequencies sent from DN-
280's Speaker Output.
6. Aux Input: Connect an audio device to this input using a standard 1/8" (3.5 mm) stereo/TRS
cable.
Note: The Aux Input and rear panel Channel Input cannot be used at the same time. The
Channel Input will be disabled when a device is plugged into the Aux Input.
7. Mic Gain: Turn this knob to control the volume level of the Mic/Line Input.
8. Mic/Line Input: Connect a microphone or line-level device to this input using a standard XLR or
1/4" (6.35 mm) TRS cable. Turn the Mic Gain knob to control the volume level of this input.
Note: This input includes a ducking feature, which automatically reduces the gain of the Aux
Input and Channel Input by 20 dB when the microphone is in use at the same time (such as
when paging). After 2.5 seconds without input from the microphone, the Aux Input and Channel
Input gain will return to their set levels.
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