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Knowledge Base > Discontinued Products > 610 Broadcast Audio Delay

Why do I hear distortion when the 610 Broadcast Audio Delay is activated?

A level increase of this magnitude will increase the amount of compression applied by the limiter by 6 dB. This change will be noticed by anyone sensitive to the station’s sound. Distortion will become evident if the input circuit of the limiter runs out of headroom and clips. Clipping may also occur in other devices downstream from the audio processor in your audio chain (distribution amps, STL transmitters).

On-air talent will invariably accuse the 610 for any degradation in audio quality because the problem will make itself evident when they push the START button on the 610 and begin building delay.

One solution is to convert the input of the device plugged into the 610’s output to a bridging (high impedance) input. If this is done, the console output will switch between two bridging inputs when the 610 cycles between bypass and operate. There will be no significant change in loading to the console output.

Most modern equipment is built with electronically balanced inputs. Transformer inputs are virtually never used anymore. If an input presents a 600-ohm load, it is most likely created by the addition of a 620-ohm resistor across the input circuit. Removal of this resistor may be all that is required to convert the input to a bridging input. Consult the manual, or call the manufacturer of your audio processor, for assistance.

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