ISP Technologies THETA 212 Combo - Manual (Page 5)

4. MIDRANGE BOOST/CUT CONTROL
This control works in conjunction with the SWEEP frequency control 5. The MID and
SWEEP controls work together to provide a semi-parametric tone control. When the MID
control is set at 12:00 straight up there is no boost or cut in the MID frequency portion of
the spectrum. The graph below shows the response of the MID boost/cut and SWEEP
controls. The MID control allows +/- 12db of boost or cut to be applied at the frequency
determined by the SWEEP control.
5. SWEEP FREQUENCY CONTROL
This control works in conjunction with the MID boost/cut control and adjusts the center
frequency of the MID boost or cut signal. At the full counter clockwise setting the
midrange frequency will be at 300Hz, at the full clockwise setting the center frequency of
the midrange will be at 6KHz. NOTE: when the MID control is set at 12:00 straight up
the SWEEP will not have any affect on the signal since there is not boost or cut being
applied.
COMBO PREAMP2
1. PREAMP2 ON LED
This led indicates when PREAMP2 is active and in the signal path. NOTE: The PREAMP2
switch on the THETA FOOTCONTROLLER switches PREAMP2 on and off. PREAMP2 is
functional (active) only when the DISTORT channel is selected. PREAMP2 and
PREAMP1 will automatically switch with the Distort or clean channel is selected.
NOTE: ALL OF THE REMAINING FUNCTIONS OF PREAMP2 ARE IDENTICAL TO
PREAMP1 AND WILL NOT BE REPEATED.