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Seite 29 

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 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

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) 

Button

 

for changing the 

functional levels 

Summary of Contents for X4 V Series

Page 1: ...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 1 UHL INSTRUMENTS X4 V Owner s Manual X4 V 1 X4 V 2...

Page 2: ...y please check voltage The unit can be powered with 100VAC up to 240VAC Use the correct power cord Do not use a damaged power cord or plug Humidity To reduce the risk of fire or electric shock do not...

Page 3: ...dal Input 10 Foot Switch Input Slow Fast Vent II Slow Fast Vent Jack 10 Controls 11 Drawbars 11 Percussion 12 Chorus Vibrato 13 EQ Bypass Drive Amp122 Bypass 13 Reverb Separate Bass Split 14 Reverb 14...

Page 4: ...RTANT SAFETY INSTRUCTION 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 4 Internal Rotary Ventilator II 29 Potentiometer Main Functions 29 Pots Secondary Functions 30 Overload LED...

Page 5: ...ild in Time The smacking produced by the tone generator gets under your skin especially in connection with percussion on We recreated even the smallest details of the finest sounding vintage organs No...

Page 6: ...he part of the manufacturer Removing the USB cap can void the manufacturer s warranty SLOW FAST VENT Note Momentary foot switch e g BOSS FS 5U The contact must be open and close only briefly when the...

Page 7: ...for service work on the part of the manufacturer Removing the USB cap can void the manufacturer s warranty MIDI OUT The X4 V can be used as a velocity sensitive controller keyboard External sound mod...

Page 8: ...connect the power cable Plug the cable into a grounded outlet only Make sure that your power outlet delivers an appropriate voltage level as described above The power cable may vary according to the c...

Page 9: ...Vibrato Bypass IQ AMP122 on off Seite 13 Control Panel Vent II Page 29 30 31 Drawbars Lower Page 11 Drawbars Bass Pedal Page 11 Chorus und Vibrato Switch Page 13 Master Volume Page 16 Drive Amp122 Pag...

Page 10: ...xer for stereo included Rotary Sim Vent II 11 Pin Rotary Output The X4 V is designed to connect with a 11 pin rotary speaker cabinet When a physical rotary speaker is connected via the 11 pin plug the...

Page 11: ...l 16 5 1 3 8 4 2 2 3 2 1 3 5 1 1 3 1 The X4 V organ has 2 sets of nine drawbars one for the upper manual and one for the lower manual plus 2 drawbars for the bass pedal A third bass pedal drawbar cont...

Page 12: ...SOFT button Decay of the percussion signal depends on the FAST button setting Frequency is selectable to be either the 2nd or 3rd harmonic of the played note Percussion is single triggered To hear the...

Page 13: ...us parameters are set according to a real vintage organ All Vib Chorus parameters are programmable in the Menu Display panel see page 27 EQ Bypass Drive Amp122 Bypass EQ Bypass The EQ equalizer set in...

Page 14: ...art of the keyboard plays the Lower Manual Use the right hand drawbars to adjust the Lower Manual sound Pedal to Upper Press two adjacent keys at the desired split point on the upper manual hold both...

Page 15: ...ed a sound to your liking press a preset button of your choice and keep it pressed until the LEDs of all preset buttons start blinking Then release the button Your preset is now stored and can be reca...

Page 16: ...6550 tubes The tube amp overdrive starts from the center position of the volume control Turning the volume control clockwise adds more harmonic tube overdrive Note Drive Amp122 combined with the Drive...

Page 17: ...pedal bass Midi channel 3 to obtain a fully fitted magnetic wheel vintage organ Example X4 V 1 2 x MIDI IN MIDI OUT To play the Lower of the X3 1 Connect a MIDI Keyboard to one of the both MIDI IN So...

Page 18: ...ve controller keyboard Local On Off Normal setting All ON When playing other sound generators via MIDI Out you can mute individual parts of the organ Example The Lower Manual is intended to play an ex...

Page 19: ...lt 11 sets recognized MIDI CC set to NI B4 d3c Native Instruments B4 Doepfer d3c controller default and others sets MIDI routing behaviour to Local Tx own MIDI events are sent on MIDI OUT Inp 1 Thru M...

Page 20: ...ther right or left A changed parameter is indicated by an asterisk in the display To store changed settings press the Data Entry rotary knob for 2 seconds until the Saved message appears Hereafter the...

Page 21: ...y store parameter changes The asterisk disappears after saving Target more reverb on Reverb 1 Turning the Data Entry knob to the right makes the reverb longer Pressing and holding 2 sec the Data Entry...

Page 22: ...ample Call up the factory preset 01 turn the knob one grid to the right Change Factory Presets The factory presets can be changed individually and replaced by their own factory presets In the example...

Page 23: ...ng and holding 2 sec the Data Entry button will again ask if and how to save Press the Data Entry button again to save the changes In this way all preset values of the factory presets can be changed R...

Page 24: ...outside these 5 octaves Bass EQ set here neutral Parametric Mid EQ raised by approx 5dB here The frequency Mid s which should be changed can be shifted very far from approx 200 Hz to 4000 Hz Here abo...

Page 25: ...LED lights The only makes sense at X3 1 PedalToUpper on the upper press two key s side by side at the desired split point hold the key s and simultaneously press button Split Split LED lights The only...

Page 26: ...os OFF works drawbars 1 despite active percussion Harmonic foldback 16 1 octave repeats 4 presets Foldback Full Foldb muted muted Full Simulates the tuning capacitor in the foot swell Higher value mor...

Page 27: ...ect on chorus is obvious while increase on Vibrato is more subtile Sets amount of reflected signal on LC linebox due to aged caps Higher values lead to a celeste like effect as found on model M100 Set...

Page 28: ...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 28 Generator Modelle B3 default 91 tones sound generator B3 old as above but more leakage stronger key click M3 M100 no foldback for higher...

Page 29: ...z 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 th...

Page 30: ...ly when you re playing left hand and or pedal bass Mix Dist Hi As with the MIX DIST LO knob this controls the mix of the upper rotor in the signal as well as the distance of the virtual mics from the...

Page 31: ...Horn 0 5sec 0 5sec 2sec 8sec 1sec FAST SLOW Bass 0 8sec 4 2sec 8sec 8sec 5 5sec Horn 0 8sec 0 8sec 3 2sec 8sec 1 6sec Mode 2nd Func The VENTILATOR II features three different frequency responses for...

Page 32: ...override of the Vent II In this case the Overload Led lights up This too high level must then be adjusted with the Master Volume control turn to the left Drive Amp122 The Amp122 is a complex overdriv...

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