User Guide

The bass, lo-mid, hi-mid and treble bands use dual concentric rotary controls. The outside ring controls the band
cut and boost in the range -15dB to +15dB. The inner ring of the dial controls the bandwidth of the filter in the
range 0.1 to 2 octaves (with a centre detent at 0.5 octave).
EQ section
freq (bass) control:
Selects frequency at which
the bass equaliser band
acts; continuously variable
from 20Hz to 400Hz.
bass dual concentric rotary
control knob:
bell
Bass band
gain/attenuation adjustment is via
inner control knob. Bass bandwidth
is adjusted using the outer control
ring, enabled via switch
(immediately below).
bell (bass) switch: Conventional latching
switch enables/disables parametric EQ for
the bass band. When switch is in fully in
position, equaliser band will work in full
parametric mode. Otherwise, equaliser band
acts like a traditional MIDAS shelving
response EQ.
freq (hi-mid) control:
Selects frequency at which
the hi-mid equaliser band
acts; continuously variable
from 400Hz to 8kHz.
eq switch:
Enables/disables equaliser
in the signal path.
freq (lo-mid) control
knob: Lo-mid control
selects frequency at which
the lo-mid equaliser band
acts and is continuously
variable from 100Hz to
2KHz.
lo-mid dual concentric rotary
control knob: Lo-mid band
gain/attenuation adjustment is via
inner control knob. Lo-mid bandwidth
is adjusted using outer control ring.
hi-mid dual concentric
rotary control knob: Hi-mid
band gain/attenuation
adjustment is via inner control
knob. Hi-mid bandwidth is
adjusted using outer control
ring.
treble dual concentric rotary
control knob:
bell
Treble band
gain/attenuation adjustment is
via inner control knob. Treble
bandwidth is adjusted using
outer control ring, activated by
switch (immediately
below).
bell (treble) switch: Conventional
latching switch enables/disables parametric
EQ for the treble band. When switch is in
fully in position, equaliser band will work in
full parametric mode. Otherwise equaliser
band acts like a traditional MIDAS shelving
response EQ.
freq (lo-cut) control knob:
lo-cut
Lo-cut filter control selects
the HPF frequency and is
continuously variable from
20Hz to 400Hz. Enabled by
the switch.
lo-cut switch:
Conventional latching
switch that enables lo-cut
filter when switch is on,
that is, in its fully in
position.
freq (treble) control:
Selects frequency at which
the treble equaliser band
acts; continuously variable
from 1KHz to 20KHz.
Front PanelFront Panel
XL42 Operators Manual - Page 7