Controls – elysia xpressor 500 User Manual

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Threshold (Thresh): The operating point of the compres-

sor. If the input level exceeds the value set with this controller,

the compression process will start.

Attack: The transient response of the compressor. It deter-

mines the time the xpressor 500 needs to reach 10 dB of gain


Release: The return phase of the compressor. It controls

the period of time between the input signal falling below the

threshold and the xpressor 500’s return to unity gain.

Ratio: The relation between the input level and the output

level. As a specialty of the xpressor 500, even negative ratios

can be set here. (p. 10)