UAD Powered Plug-Ins Manual v5.2 - Just Music

If the LFO Type menu is set to one of the Trem modes, the Rate is linked to the
Trem/Fade module rate. In this scenario the Rate knob value changes to
“Trem”, adjusting the Mod Delay Rate will have no effect, and the modulation
rate is determined by the Trem/Fade module settings (even if the Trem/Fade
module is disabled with the On/Off button).
Depth & Time/
Sweep Knobs
Sweep Knobs
The function and label of the second and third controls in the Mod Delay module
are determined by the Mode pull-down menu. When the Mod Delay
Mode is set to Flanger, the second and third knobs are labeled Sweep Lo and
Sweep Hi respectively. When the Mod Delay Mode is set to Chorus or Vibrato,
the second and third knobs are labeled Depth and Time respectively.
The Sweep knobs determine the frequency range that will be affected by the
Mod Delay. The low and high frequency values can be independently adjusted.
This flexible arrangement allows the Mod Delay to affect a narrow or
broad frequency range, and also enables you to tune the frequency response
characteristic to match the signal if desired.
Note: The Sweep knobs are only visible in Flanger mode.
Sweep Lo Knob
Sets the lowest frequency to be affected by the Mod Delay. The available
range is from 100Hz to 6000Hz.
Because the Sweep Lo frequency cannot be set higher than the Sweep Hi frequency,
if the Lo value is increased beyond the Hi value the Hi value will increase
to match the Lo value.
Sweep Hi Knob
Sets the highest frequency to be affected by the Mod Delay. The available
range is from 100Hz to 6000Hz.
Because the Sweep Hi frequency cannot be set lower than the Sweep Lo frequency,
if the Hi value is decreased below the Lo value the Lo value will decrease
to match the Hi value.
Depth Knob
Sets the amount of modulation to be applied to the signal. The maximum
available range is 0 to 300 cents. However, the available range is dependent
on the Rate setting. Less Depth range is available is slower Rate settings.
Note: The Depth knob is only visible in Chorus and Vibrato modes.
UAD Powered Plug-Ins Manual - 347 - Chapter 38: Nigel