User Manual

UAD Powered Plug-Ins - 255 - Helios Type 69 Equalizer
Bass The Bass knob serves a dual purpose. It functions either as
a low frequency shelf filter or a low frequency peak filter.
At the “0” position, neither filter is engaged.
When Bass is set to one of the frequency values (60Hz,
100Hz, 200Hz, or 300Hz) the low band is in peak mode.
In this mode, the amount of gain (“bass boost”) applied to
the specified frequency is determined by the Bass Gain knob.
Note: Like the original hardware, simply putting this control on any frequency
will yield approximately 3.5dB in gain increase even if the Bass Gain control
is set to 0.
When this knob is set to one of the decibel values (–3, –6, –9, –12, –15 dB)
the low band is in “bass cut” shelving mode with a set frequency of 50Hz. In
this mode, the Bass Gain knob has no effect.
Bass Gain The Bass Gain knob determines the amount of low band gain
to be applied when the Bass knob is in one of the frequency
positions. Up to +15dB of boost is available.
Note: Bass Gain has no effect when the Bass knob is set to one
of the dB positions.
Mid Freq This control determines of the frequency of the midrange
band. The following frequencies can be specified: 700Hz,
1kHz, 1.4kHz, 2kHz, 2.8kHz, 3.5kHz, 4.5kHz, and 6kHz.
Note: In the graphic interface of this control, what may ap-
pear to be a dash (“-”) actually represents a decimal point.
This anomaly mimics the original hardware.
Mid Gain This control determines the amount of gain or attenuation to be
applied to the mid band. Up to 15dB of boost or cut is avail-
able.
The Q (bandwidth) on the midrange band is fairly wide and
gentle at low settings, but gets progressively narrower as the gain value is in-
creased.