ISP Technologies THETA 212 Combo - Manual (Page 8)

9. LEVEL CONTROL
The LEVEL control adjusts the output LEVEL of the CLEAN channel. NOTE: The final
output level is determined by the setting of the MASTER LEVEL CONTROL.
COMBO DISTORT CHANNEL
1. DISTORT CHANNEL ON LED
This led indicates when the DISTORT CHANNEL is active. NOTE: The CHANNEL
SELECT switch on the FOOTCONTROLLER switches between the DISTORT CHANNEL and
CLEAN CHANNEL. THE DISTORT CHANNEL can be selected by using either the
FOOTCONTROLLER CHANNEL SELECT switch or by pushing the CHANNEL SELECT switch
on the from panel of the THETA amplifier.
2. GAIN CONTROL
This control adjusts the amount of gain in the DISTORT CHANNEL. The maximum
amount of gain will be determined by the setting of the DISTORT CHANNEL GAIN and
PREAMP2 gain only if PREAMP2 is switched on. The maximum amount of available gain
is greater than 140db if PREAMP2 is switched on.
3. BASS CONTROL
This control adjusts the amount of boost or cut in the low frequency portion of the
spectrum of the DISTORTION circuit. The available BASS boost and cut range is +/-15
decibels.
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. See the graph shown in the CLEAN CHANNEL section, which 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.