Acustica IVORY5, Manual, Page: 55 / 57

Controls
PRE:
This button activates the preamp stage of the plug-in.
INPUT TRIM: A one-knob internal gain structure control which links the input and output
gain stages with an inverse law. This control sets the input level from -24dB to +24dB, and
it is used to adjust the pre-amp stage’s internal level.
It also allows you to increase the harmonic saturation of the pre-amp.
Note: when the PRE stage is bypassed (led off), the ‘Input Trim’ mode has no effect.
INPUT-OUTPUT METERS: Measure the input and output levels of the plugin.
LF LEVEL: Controls the output level of the wideband/LF limiter. Gain range: from -10 dB
to +10 dB.
HF LEVEL:
Controls the output level of the HF limiter. Gain range: from -10 dB to +10 dB.
When the HF stage is bypassed (‘HF ON’ led is off), the HF limiter is not activated; in this
event, the HF Level control has no effect.
HF ON: Enables a crossover filter set at a 2kHz and activates the HF limiter.
This changes the configuration of the plugin from a traditional wideband brickwall limiter to
two parallel limiters, each working on a different part of the frequency range (LF and HF).
LF THRESHOLD:
Sets the input level and, as a consequence, the operating range of the
first limiter (range: -20 dB to +20 dB).
HF THRESHOLD: Sets the input level and, as a consequence, the operating range of the
second (optional) limiter (range: -20 dB to +20 dB).
SOA Overflow LED (Wideband/LF limiter):
The SOA (‘Safe Operating Area’) Overflow
LED warns about possible clipping and unpredictable behaviour due to excessive input
levels reaching the wideband/LF limiter’s internal envelope follower.
It should never enter the red zone.
SOA Overflow LED (HF limiter):
The SOA (‘Safe Operating Area’) Overflow LED warns
about possible clipping and unpredictable behaviour due to excessive input levels reaching
the HF limiter’s internal envelope follower.
It should never enter the red zone.
GAIN REDUCTION METER (Wideband/LF limiter): This meter displays the Wideband/
LF limiter’s gain reduction.
GAIN REDUCTION METER (HF limiter):
This meter displays the HF limiter’s gain reduc-
tion.
When the HF ON section is bypassed (led off), the HF limiter and relative Gain Reduction
meter are disabled.
OUTPUT LEVEL:
Sets the maximum output level of the processor.
It operates as a ‘ceiling’ control, i.e. the output signal will never exceed the preset level.
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