Specifications

Chapter 4: Focusrite D3 15
Chapter 4: Focusrite D3
Focusrite D3 is a high-quality dynamics processor
plug-in for Pro Tools. Developed in cooperation
with Focusrite, the D3 is based on the highly ac-
claimed Red Range 3
™
dual mono/stereo compres-
sor & limiter designed by Rupert Neve.
Focusrite D3 Configurations
There are two configurations of the real-time TDM
Focusrite D3 plug-in:
 Compressor+Limiter. This configuration allows
you to use both the compressor and the limiter at
the same time. The Compressor+Limiter plug-in
requires twice as much DSP as the Compres-
sor/Limiter.
 Compressor/Limiter. This configuration allows
you to use either the compressor or the limiter—
but not both at the same time. The Compres-
sor/Limiter plug-in uses half as much DSP as the
Compressor+Limiter. It is provided so that you can
conserve DSP, since you may not need both com-
pression and limiting at the same time.
The Compressor/Limiter defaults to the compres-
sor being enabled and the limiter disabled.
To enable the limiter:
1 Disable the compressor by Start key-clicking
(Windows) or Control-clicking (Mac) its icon.
2 Click the Limiter icon.
The D3 Compressor
The D3 compressor reduces the dynamic range of
audio signals that exceed a user-selectable thresh-
old by a specific amount. This is accomplished by
reducing output levels as input levels increase
above the threshold.
The amount of output level reduction that D3 ap-
plies as input levels increase is referred to as the
compression ratio. This parameter is adjustable. If
you set the compression ratio to 2:1, for example,
for each 2 dB that the signal exceeds the threshold,
Focusrite D3
Compressor and Limiter icons
Compressor
Limiter