ISP Technologies THETA Head - Manual (Page 7)

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.
THETA DISTORT CHANNEL
1. CHANNEL SELECT SWITCH
The CHANNEL SELECT switch changes the THETA operating channel from CLEAN to
DISTORT. The CHANNEL SELECT switch is a momentary switch that changes the
channel upon pushing the switch. This switch can be used with or without the THETA
FOOTCONTROLLER connected.
2. DISTORT CHANNEL ON LED
This led indicates when the DISTORT CHANNEL is active. NOTE: The CHANNEL
SELECT switch on the THETA FOOTCONTROLLER switches between the DISTORT
CHANNEL and CLEAN CHANNEL. THE DISTORT CHANNEL can be selected by using
either the THETA FOOTCONTROLLER CHANNEL SELECT switch or by pushing the
CHANNEL SELECT switch on the from panel of the THETA amplifier.
3. 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.
4. 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.
5. 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.