User`s guide

HHii--MMiidd FFrreeqquueennccyy CCoonnttrrooll

The Hi-Mid control is a dual concentric pot (meaning there are

two controls - one outer and one inner). The outer control is

used to select a frequency while the inner control is used to

apply +/-12dB of gain. The Hi-Mid control can cover two fre-

quency ranges depending on the position of the Shift x 10

switch. These ranges are 200Hz to 2KHz and 2KHz to 20KHz.

HHii--MMiidd SShhiifftt xx 1100 SSwwiittcchh

The Hi-Mid Shift x 10 switch determines the range over which the

Hi-Mid Frequency control will cover. In its “out” position the

range is set at 200Hz to 2KHz. In its “in” position the range is

set at 2KHz to 20KHz.

NNoottee::

You’ll notice the Lo-Mid and Hi-Mid Frequency controls

overlap (meaning they cover the same frequencies) in the 200Hz

to 2KHz range. This is intentional and is another of the powerful

features of the Tube EQ. This feature allows either or both con-

trols to be used in this range. This is extremely useful if you want

to cut at 200Hz

and

boost at 350Hz.

HHiigghh FFrreeqquueennccyy CCoonnttrrooll

The High Frequency control adjusts a shelving filter with a selec-

table corner frequency of either 6KHz or 18KHz. The high shelv-

ing filter designed into the Tube EQ affects all frequencies above

the corner frequency when applying boost or cut. In other words,

cutting at 6KHz also cuts 7KHz, 8KHz, etc. The High Frequency

control has as range of +/- 12dB. The two ranges are selected

with the High Shift switch. 6KHz is great for adding top end to

guitars, snare drums and vocals. Cutting 6KHz can also help to

“take the edge off” brittle or harsh sounding instruments. 18KHz

may be used to add “sizzle” to cymbals and is generally referred