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19. EQ
A responsive 4-band semi parametric EQ (equalizer) provides
independent control of four frequency bands. Use EQ ON to
compare the sound with the equalizer switched in or out of
circuit.
HF (HIGH) and LF (LOW) are shelving filters which affect high
frequencies above 12kHz, and low frequencies below 80Hz
respectively. HM (HIGH-MID) and LM (MID-LOW) are bell
shaped peak/dip filters which affect frequencies around a center
point which can be swept from 500Hz to 16kHz, and 31Hz to
1kHz respectively. These have a width (Q) of 1.8 which provides
effective control for both creative and corrective equalization. The
EQ curves shown opposite display the signal level response at
maximum boost and cut as the frequency varies from low (20Hz)
to high (20kHz).
All bands can be boosted or cut by up to 15dB and have a center
detent 0dB position. The overlapping frequency ranges let you
deal with challenging source problems easily using combination
of bands.
Check that you are using the best microphone type and
placement before using the EQ. Start with the EQ set flat
(neutral) and apply only as much boost or cut as is really needed.
20. AUX/DIR POST EQ
You can choose to have your DIRECT OUT and AUX source to
be pre-EQ or post-EQ by using the AUX/DIR POST EQ function
button on the channel strip. Pressing in the AUX/DIR POST EQ
button will post-EQ your DIRECT OUT and AUX source on that
channel.
21. DIR POST FADER
You can choose to have your DIRECT OUT source to be pre-
fade or post-fade by using the DIR POST FADER function button
on the channel strip. Pressing in the DIR POST FADER button
will post-fade your DIRECT OUT source on that channel.
22. POST / PRE
When pressed, the pre-fade channel signal is sent to the
associated auxes. When released, the post-fade signal is sent.
AUX (1-4) and AUX (5-6), are grouped for pre/post switching.
23. AUX SENDS
These rotary controls adjust how much channel signal is mixed to the aux outputs. Each of the six auxes has
its own control. The control adjusts from fully off (-∞) to +6dB boost. Unity gain (0dB) is marked at 3 o'clock
position. AUX (1-4), AUX (5-6) are pre/post switchable.
Pre-fade (also known as “pre-fader”) aux sends signals are not affected by channel fader movements. These
are often used to feed stage monitors. In most cases, users also prefer that the monitor sends are not
affected by inserted processors or the channel EQ. Post-fade (also known as “post-fader”) aux sends follow
the channel fader movements. They are typically used to send a proportion of the channel signal to an
effects device such as reverb and delay. Note that post-fade sends may be preferred when the console is
configured in monitor mode so that the faders become “masters” for all monitor mixes. Pre-fade or post-fade
aux sends may also be used for applications such as recording, zone feeds, sub feeds, clean feeds, and aux
