Rocktron HUSH Ultra - Manual (Page 9)

9
HUSH THRESHOLD CONTROL
The front panel HUSH Threshold control determines the minimum input level at which the HUSH filter and
downward expander will begin to operate. Setting this control too high will result in a loss of sustain, as
notes will tend to die out much faster than they should. Conversely, when set too low, the expander will close
too late (if at all) and the noise floor will remain audible
GATE THRESHOLD CONTROL
The other half of the HUSH Ultra consists of a noise gate. A noise gate completely shuts off the output signal when the input
signal level drops below a prescribed threshold level (volume). On the HUSH Ultra, this threshold is determined by the Gate
Threshold control on the front panel. This control should be set so that it doesn't cut notes off (i.e., set too high), yet doesn't
activate long after a note ends (allowing the noise floor to remain audible).
This circuit is combined with the Variable Integrated Release (V.I.R.) circuit to provide an internal variable release to the
downward expander. With the V.I.R. circuit, if the guitar signal decays slowly, the downward expander will engage slowly.
If the guitar signal stops quickly, the downward expander will engage quickly. The LED indicates when downward expan-
sion is active.
HUSH & GATE THRESHOLD