4.7 Using the Side-chain
Inserting an equalizer into a compressor’s
gain reduction control path is commonly
known as side-chaining. This effect allows
for spectral control of the compression at the
specified frequencies. The most frequent
application of this technique is known as
de-essing. De-essing is the removal of
excessively pronounced "S" sounds from
vocal recordings. You can de-ess with the
Vt-747sp and any other frequencies where
you need a little more compression than the
overall program.
To insert the two-band spectral EQ into the
Side Chain:
1. Set the compressor to full compression to
begin. (described in previous section)
2. Engage the SIDE-CHAIN switch
3. Set the HF and LF Threshold controls to
-15dB (fully counterclockwise)
4. Press in the SC LISTEN to monitor
5. Sweep the LF and HF frequency controls
to find the desired signals to send into the
Side-Chain.
6. Depress the SC LISTEN switch (non-illuminated)
so that the signal you were emphasizing with
the SC LISTEN is now routed into the gain
control section of the compressor.
5.0 Applications
The first thing to remember is that there are
no specific rules. The Vt-747sp was
designed to be extremely flexible and filled
with endless colors, textures and tones.
TRUST YOUR EARS!
5.1.0 Typical Set-ups
The following setup diagrams are a few
typical ways (not the only ways) to insert the
Vt-747sp in the audio chain during a
recording project. Much of the power in the
Vt-747sp lies within its flexibility. You can use
the Vt-747sp in every stage of the recording
or mixdown process:
Figure 5.1.1 - Recording to direct to Digital
Audio Workstation (DAW) or tape machine.
Note that the Vt-747sp is a line level unit only.
It does not have microphone preamplifiers
(mic pre’s). You must use mic pre’s Such as
the two-channel Avalon AD2022, before
inserting the Vt-747sp during recording. The
Vt-747sp works wonderfully with keyboards,
drum machines, synthesizers and other line
level inputs enabling you to completely
bypass the mixing console and go directly to
your DAW or tape machine.
Figure 5.1.2 - Mixdown Stereo Buss - Main
right/left Insert or across the entire stereo mix.
Figure 5.1.3 - Mixdown and/or Mastering
on DAW - Across a stereo submix or the
entire mixed stereo signal
Figure 5.1.4 - Mastering Tape Based - Main
Right and Left Outputs
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