Softube AAX DSP, User Manual, Page: 25 / 182

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Active Equalizer
The Active Equalizer is modeled from a
Swiss console equalizer, a Filtek Labo mk.5, with
three adjustable bands, a low cut, and a high cut.
It is a very solid construction and is very different
from the Passive Equalizer. Where the knobs of the
Passive Equalizer all influence each other (much
like the tonestack of a guitar amp), the Filtek was
built to minimize such effects. For instance, if you
set the frequencies of the Low and Mid-filters so
that they overlap, and cut both bands at –16dB, you
won’t get a doubled effect (–32dB) – you will still
just have a cut at around 16dB. This is very different
from how other (especially digital) equalizers usu-
ally work. And it is of course a big part of its sound.
Low Band
For more info about this product, please see the
chapter about the Focusing Equalizer.
User Interface
The Active Equalizer has three full parametric
bands, a low frequency band (50-500 Hz), a mid
band (380-3800 Hz) and a high frequency band
(1.8-18 kHz) all controlled with a gain control (-16
to 16 dB), a frequency selector and a width/bypass
switch. You also get two cut filters (18 dB/oct) and
an output volume control.
Mid Band High Band Output
Gain Control
Frequency Select
Width/Bypass
Select
Low Cut High Cut