Hf Eq; Mid Eq (Hmid & Lmid); Lf Eq; Eq Switch - SoundCraft LX7-2 Technical Manual

HF EQ

Turn clockwise to boost high (treble) frequencies (12kHz and above) by up to 15dB,
adding crispness to cymbals, vocals and electronic instruments. Turn anticlockwise to
cut by up to 15dB, reducing hiss or excessive sibilance which can occur with certain
types of microphone. Set the knob in the centre-detented position when not required.
MID EQ (HMID & LMID)
There are two pairs of knobs which work together to form HI and LO MID frequency EQ
sections. The lower knob in each pair provides 15dB of boost and cut, just like the HF
EQ knob, but the frequency at which this occurs can be set by the upper knob over a
range of 550Hz to 13kHz (HMID) or 80Hz to 1.9kHz (LMID). This allows some truly
creative improvement of the signal in live situations, because the mid bands cover the
range of most vocals. Listen carefully as you use these controls together to find how
particular characteristics of, for instance, a vocal signal can be enhanced or reduced.
Set the gain (lower) knob to the centre-detented position when not required. Note: Q
is set at 1.5.

LF EQ

Turn clockwise to boost low (bass) frequencies (60Hz and below) by up to 15dB,
adding warmth to vocals or extra punch to synths, guitars and drums. Turn anticlockwise
to cut low frequencies by up to 15dB for reducing hum, stage rumble or to improve a
mushy sound. Set the knob to the centre-detented position when not required.

10 - EQ SWITCH

The EQ switch bypasses the Equalisation section when released. Alternately pressing
and releasing the switch provides an easy way of comparing the equalised and
unequalised signals.

11 - AUX SENDS

These are used to set up separate mixes for FOLDBACK, EFFECTS or recording, and the
combination of each Aux Send is mixed to the respective Aux Output at the rear of the
mixer. For Effects it is useful for the signal to fade up and down with the fader (this is
called POST-FADE), but for Foldback or Monitor feeds it is important for the send to be
independent of the fader (this is called PRE-FADE). All Aux Sends are muted with the
other channel outputs when the MUTE switch is pressed.
All six Aux Sends are POST-EQ, unless the EQ is bypassed using the EQ switch (see
above) and are normally POST-FADE for use as effects sends or additional submixes.
Aux’s 1 & 2 and 3 & 4 may if required be switched in pairs to PRE-FADE by pressing
the respective PRE switch, for use as foldback or monitor feeds. Aux’s 5 & 6 always
remain POST-FADE.
12 - PAN
This control sets the amount of the channel signal feeding the Left and Right MIX
buses, allowing you to move the source smoothly across the stereo image. When the
control is turned fully right or left you are able to route the signal at unity gain to either
left or right outputs individually.
13 - MUTE
All outputs from the channel except inserts are active when the MUTE switch is released
and muted when the switch is down, allowing levels to be pre-set before the signal is
required.
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