CONTROLS & CONNECTIONS
21
the effect from the center frequency is 1/4 as wide.
The HI Q OUT position is a much broader in its effect and the tonal
variation derived is similar to a control you may have used on a hi-fi or
guitar amplifier. When the HI Q switch is engaged, the effect on the
frequency is much more specific. The selected frequency is reduced or
increased in greater proportion than the nearest frequencies. This results in
greater control over the particular frequency you are attempting to
manipulate. This makes it possible for you to smooth out a harsh sounding
vocal or to dial in just the right amount of, say, 2kHz to really make a voice
pop out of the “mix” without having to push the fader all the way up.
HIGH MID RANGE
The High-Mid Range control is variable from 450 Hz to 5.8 kHz. The inner
concentric knob adjusts the frequency setting while the outer ring can boost
the selected fre12 dB or cuts the frequency selected by as much
as -12 dB, if desired.
HIGH SHELVING
The control labeled High Shelving provides the fine tuning of the upper
frequencies of the input signal. Shelving occurs at 12 kHz and above and
the associated controller allows the user to boost (+12 dB) or cut (-12 dB)
the very high frequencies.
80 HZ
The VXP has an eighty-hertz filter that is activated by engaging the switch
on the front panel. This filter (often referred to as a
RUMBLE
filter) is
useful for eliminating extraneous low-end information from the signal being
amplified. Frequencies from eighty hertz and below are cut from the
incoming signal at 6dB per octave. This feature is useful in eliminating low
frequency noise such as air-conditioning rumble or for reducing the sound of
