Hi-Mid Frequency Control 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 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: 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 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 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
