3
Features
Front Panel
1
2
3
4
5
6
7
8
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
:
•
Signal LED (SIG):
The
Signal LED
will be lit green when the signal coming from the
Channel
Input
is at an optimal volume level.
•
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
.
•
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.
