Internal Rotary Ventilator Ii; Potentiometer Main Functions - UHL Instruments X4 V Series Owner's Manual

Internal Rotary Ventilator II

Ventilator II has five knobs to control various parameters of the effect.
Each controller has 2 functions. There are 2 levels of functionality:
-Main functional level (label above the pots).
This level is active after switching on the organ.
Secondary function (underlined caption below the pots).
To switch between the functional levels, press the red "2nd Func" button.
Activation of the secondary functions is indicated by flashing Speed LEDs (2x per second).
To return to the main functions, press the "2nd Func" button again.
The settings of the secondary functions are saved and
remain even after switching off the organ.

Potentiometer Main Functions

Button for changing the
functional levels
Fast Speed: The Fast Speed knob adjusts the bass and treble rotors'speeds while the unit is in FAST mode. Twist
the knob to the
far left for slower speeds and to the far right for faster speeds:
FAST Bass 2,60Hz – 7,8Hz (6,5Hz) Horn 2,72Hz – 8,16Hz (6,8Hz)
In Stellung 2.00 Uhr (Werte in Klammern) entsprechen die
Balance: The Balance knob adjusts the relative volumes of the bass and treble speakers. Use it much like you
would an equalizer, adapting the unit's sound to suit different types of input signals and the musical context,
amp, or monitor.
Twisting it to the right from the 12 o'clock position cuts low
frequencies; turning it to the left cuts higher frequencies.
Drive: This knob activates VENTILATOR II's on-board tube simulator.To make the most of the Drive section,
ensure you dial in the optimum input level as described in the section above entitled Overload LED. Then set the
instrument's volume to the maximum level and twist VENTILATOR II's Drive knob to dial
in the maximum distortion level. This lets you ride the instrument's volume pedal or knob to control the amount
of saturation, which is a convenient and musically expressive way of modulating between clean and distorted
sounds on the fly. The Drive section is level-compensated; that is, the output level
does not change much as you turn up the Drive knob.
The main function level (is active after switching
on the X4 V)
C o p y r i g h t b y U h l - I n s t r u m e n t s M a n u a l Seite 29