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7 . HI - PA SS FILTER
Pressing this switch inserts a 12dB per octave 100Hz Hi-Pass
Filter in the signal path, immediately after the input amplifier.
This is particularly useful on live vocals, and its use is
strongly recommended, even on male vocals. It can also be
used for filtering out low frequency hum.
8 . EQ UA LI SER
The Equaliser(EQ) comprises three sections. The upper
control provides H.F.(treble) boost and cut of +/ -15dB. The
lower two pairs of knobs are arranged as a cut/ boost control
(lower knob) of +/ - 15dB, and a SWEEP(frequency) control
which determines at which frequency the boost/ cut action
will be centered. The LF sections are essentially Swept Low
Frequency controls, covering a range from 40 to 400Hz and
providing much greater flexibility than a conventional
LF(bass) control. The MID section, with a frequency range
from 250Hz to 8kHz is particularly versatile for vocals,
enabling particular characteristics of the singer to be lifted or
suppressed very precisely.
4.0
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
-4.0
20 100
1k 10k 20k
dB
Frequency/Hz
HI-Pass Filter
20.0
15.0
10.0
5.0
0.0
-5.0
-10.0
-15.0
-20.0
20
1k 10k 20k
100
dB
Frequency/Hz
LF Section
Frequency Response Curves of the Hi-Pass Filter
Frequency Response Curves of the Equaliser
INPUT
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