12
position the corner is 120Hz.
Lo-Mid Frequency Control
The Lo-Mid control is a dual concentric pot (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 Lo-Mid control can cover two frequency ranges depending on the
position of the Shift x 10 switch. These ranges are 20Hz to 200Hz and
200Hz to 2KHz.
Lo-Mid Shift x 10 Switch
The Lo-Mid Shift x 10 switch determines the range over which the Lo-
Mid frequency control will cover. In its “out” position, the range is set
at 20Hz to 200Hz. In its “in” position the range is set at 200Hz to
2KHz.Note: You’ll notice the Low Frequency and Lo-Mid Frequency
controls overlap (meaning they cover the same frequencies). This is
intentional and is one of the powerful features of the equalizer circuit.
Hi-Mid Frequency Control
Like the Lo-Mid Frequency control, the Hi-Mid control is a dual
concentric pot (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
frequency ranges depending on the position of the Shift x 10 switch.
These ranges are 200Hz to 2KHz and 2KHz to 20KHz.
Hi-Mid Shift x 10 Switch
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.Note: The Lo-Mid and Hi-Mid Frequency controls overlap in
the 200Hz to 2KHz range. This feature allows either or both controls
to be used in this range. This is extremely useful if you want to cut at
200Hz and boost at 350Hz.
High Frequency Control
The High Frequency control adjusts a shelving filter with a selectable
corner frequency of either 6KHz or 18KHz. The high shelving filter
affects all frequencies above the corner frequency when applying boost
or cut. In other words, cutting at 6KHz also cuts 7KHz, 8KHz, etc.
