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Knowledge Base > Discontinued Products > 460 Presentation Audio Mixer

What do I do if I'm experiencing an intermittent input on the 460 Presentation Audio Mixer?

Check inward downward expander (gate). The threshold setting may be too high.

Why do the outputs of the 460 Presentation Audio Mixer sometimes mute between program changes?

It may be that in the case of the transitions that don’t mute, certain parameters of the presets are not far apart and in the case of the ones that do mute there are some fairly diverse settings between the two presets. The muting is by design with the intention of avoiding nasty pops or clicks that might otherwise result.

What do I do if I have a buzz or hum in the output of the 460 Presentation Audio Mixer?

1. Check input connector wiring.
2. Check output connector wiring.
3. If the hum or buzz is present in inputs 3 or 4, try connecting the chassis of the source equipment to the chassis of the 460. 4. Check for a ground loop problem. Inspect related systems equipment grounding to see that all system components are on the same AC ground.

Where can I find AutoCAD files for the 460 Presentation Audio Mixer?

What do I do if I'm experiencing noise (hiss) from the 460 Presentation Audio Mixer?

1. Check input signal levels and level control settings.
2. Check to see if the source signal is noisy.
3. Check if there is too much noise downstream by using the output level controls of the 460 at Mute.

What do I do if I'm experiencing distortion on the mic inputs of the 460 Presentation Audio Mixer?

Lower the gain settings for inputs 1 & 2 using the DIP switches. (Applicable only to inputs 1 & 2).

Are Crestron modules available for the 460 Presentation Audio Mixer?

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460 Crestron Modules

What do I do if the remote volume control on the 460 Presentation Audio Mixer is not working?

1. Check CTL Destination setting in Main menu.

2. Check CTL Offset and Mult in Serial Control Setup and Options menu.

Where can I find a Data Sheet for the 460 Presentation Audio Mixer?

What do I do if the output from the 460 Presentation Audio Mixer isn't hot enough?

1. Check settings on output Compressor or Limiter.

2. Check OUTPUT LEDs for illuminated COMP LED.

3. Check ratio settings; they may be set too high.

4. Check settings for Compression Makeup Gain; it may be too low.

5. Check if Compress Threshold is set too low.

What do I do if the output of the 460 Presentation Audio Mixer is stripped of dynamics?

1. Check settings on output Compressor or Limiter.

2. Check OUTPUT LEDs for illuminated COMP LED.

3. Check ratio settings; they may be set too high.

4. Check settings for Compression Makeup Gain; it may be too low.

5. Check if Compress Threshold is set too low.

What do I do if there is no output signal from the 460 Presentation Audio Mixer?

Check cables and connections to see if:

1. Outputs are driving inputs and inputs are fed from outputs.

2. Signal from the source(s) is getting to the 460.

3. The signal chain after the 460 is functioning.

4. Check if the LCD display is illuminated.

5. If signal is present, and the downstream system is operative, check the level settings at inputs and outputs to ensure that they are not muted or attenuated sufficiently to make the 460 appear to not be functioning.