UHL Instruments X4 V Series User manual

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
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UHL INSTRUMENTS X4 V
Owner's Manual
X4 V-1 / X4 V-2

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
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IMPORTANT SAFETY INSTRUCTION
Please read the entire manual and the safety instructions. It contains all the information you need to use
this unit. Don't skip any passages to ensure perfect operating of the instrument.
The product must be serviced by qualified service personnel only. DANGER! Risk of electric shock. Do not
open the chassis. There are no user serviceable parts inside. The unit should only be serviced by qualified service
staff.
Unauthorized opening of the chassis or malpractice of the unit will void warranty. The device may be used
only to its intended usage. Please operate the instrument only according to these instructions.
Mains
Before connecting the unit to the mains power supply, 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 expose the unit to rain or moisture. Never place containers
with liquid on the unit. Do not use the unit near water, e.g. swimming pool, bathtub or wet basement.
If the unit is moved from a cold place to a warm room, condensation may occur inside. To avoid damage please
allow the unit to reach room temperature before switching on.
Installation
Always place the unit on a stable keyboard stand or table. Protect the unit from strong impact. Do not drop it!
Cleaning / Maintenance
Never use any abrasive detergent, which may damage the surface. We recommend a slightly moist micro-fibre
cloth. Do not allow any liquids (water, soft drinks, etc.) to penetrate the unit.
Packaging
Please keep all packaging, and use it to protect the keyboard when transporting, e.g. if servicing is required.

IMPORTANT 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
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Inhaltsverzeichnis
IMPORTANT SAFETY INSTRUCTION.......................................................................................................................... 2
Introduction............................................................................................................................................................... 5
X4 V Overview........................................................................................................................................................ 5
Backpanel Connections............................................................................................................................................. 6
Updates/Upgrades SD-Card-Slot ...........................................................................................................................6
Connecting the Power Cable .....................................................................................................................................8
Console ......................................................................................................................................................................9
Startup.....................................................................................................................................................................10
Connecting the Power Cable: ..............................................................................................................................10
Audio Connections...............................................................................................................................................10
Volume/Expression-Pedal 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
Split-Mode: ..........................................................................................................................................................14
Common-Presets .................................................................................................................................................15
Master Volume, Drive Amp122, Tone, “Halfmoon-Switch”................................................................................ 16
MIDI .........................................................................................................................................................................17
MIDI-IN (2x) .........................................................................................................................................................17
MIDI-OUT.............................................................................................................................................................18
Local On/Off.........................................................................................................................................................18
MIDI Konfiguration Menu-Display.......................................................................................................................19
Menu/Display ..........................................................................................................................................................20
Save Mode........................................................................................................................................................... 21
Live-Preset ...........................................................................................................................................................22
Change Factory-Presets.......................................................................................................................................22
Reverb Group (Hall).............................................................................................................................................23
Split Mode............................................................................................................................................................25
Generator Group ................................................................................................................................................. 26
Vibrato / Chorus Group .......................................................................................................................................27
Percussion Group.................................................................................................................................................27
Generator-Modelle..............................................................................................................................................28

IMPORTANT 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
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Internal Rotary Ventilator II.....................................................................................................................................29
Potentiometer Main Functions ...........................................................................................................................29
Pots Secondary Functions.................................................................................................................................... 30
Overload-LED.......................................................................................................................................................32

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
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Introduction
Thank you very much for choosing an Uhl-Instruments X4 V-1 or X4 V-2. You have obtained a state-of-the-art
model of a vintage organ. We recommend that you read the entire manual carefully to take full advantage of all
the functions of your new Uhl-Instruments X4 V. Please keep this manual for later reference. We also
recommend you to keep all packaging to protect the instrument if transporting is required.
X4 V-1 and X4 V-2 have identical connection jacks and controls. Hence both models are referred to
under the name X4 V in the following.
X4 V Overview
The HOAX sound engine of the Uhl-Instruments X4 V organs fully matches the vintage electromagnetic organ
sound, including rotary cabinet, spring reverb and pedal sustain. This sound engine features completely new
principles of electronic sound generation. An exact physical model of the famous vintage organ delivers the
most authentic organ voices imaginable. It doesn't use computers, signal processors, sample players or analog
electronics. Instead, the layout of vintage organs has been transferred to a detailed physical model. HOAX does
not emulate the sound; it rather creates the sound in real-time –just like real magnetic wheels.
The percussion has that gorgeous round wooden "clonk" (remember "Child 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 computers, no samples and no DSPs are used to
comprehensively mimic all the characteristic sound details. To take a single example: the Chorus/Vibrato can't
be distinguished. No wobbling! Switch it on and enjoy that silky C/V shimmer, long-desired by clonewheel
players.
The innovative sound generation boast a great number of advantages: there is absolutely no perceivable key-to-
audio latency since the 91 magnetic wheels are continuously running, just like in a magnetic wheel generator.
Polyphony is unlimited. No lost notes, even if all keys are pressed simultaneously. And the total absence of
unwanted phase relations between the magnetic wheels makes the sound of the Uhl-Instruments X4 V so
incredibly lively and natural.
All the sought after „shortcomings“were taken over as well:
Leakage /crosstalk, magnetic wheel slip and flutter, harmonic distortion and output voltages of pickups and
filters - and of course the typical „keyclick". The X4 V keyclick is not just an added noise signal. It is dynamically
produced by random "chatter“of key contacts, dependent on key velocity. Other features are: Chorus/Vibrato
based on a digitally recreated LC delay line, Percussion in all variations, foldback and precise tapering. Drawbar
response is immediate and responsive, just like a vintage organ.
Warning! Playing an Uhl X4 V organ is highly addictive!

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SD-Card-Slot for Updates und Upgrades
SLOW/FAST VENT Note: Momentary Foot-Switch !! e.g. BOSS FS-5U!!
The contact must be open and close only briefly when the button is pressed, then
immediately opens again when you let go.
Backpanel Connections
Updates/Upgrades SD-Card-Slot: For updates and upgrades. No PC or MAC is needed. For updates or
upgrades, the customer may receive an SD card with the new firmware sent by post. When the organ is
switched off, the SD card is inserted into the slot - switch on the organ - the update / upgrade starts
automatically.
The course can be followed on the display of the organ - Ready after about 2-3 minutes - switch off the organ -
remove SD card - turn on the organ again - done.
Crashes due to wrong Windows versions, MAC, broken USB cables, viruses, etc. are therefore excluded.
The USB socket of the UHL X4 V is sealed it is used exclusively for service work on the 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 button is pressed, then immediately opens again
when you let go.
Expression-Pedal: The pedal jack can be used with a Yamaha FC7 or similar expression pedals.
SLOW/FAST 11 PIN-Buchse !!: Supports latch mode footswitches with stereo plugs. Momentary switches are
not supported. Pin configuration: Tip = SLOW/FAST, Ring = RUN/STOP
e.g. Boss FS-5L.
2 x MIDI IN: These inputs can be used to connect a controller keyboard for Lower Manual (Midi channel 2) and
a Midi pedal for pedal bass (Midi channel 3).
Main-OUT L + R: Standard audio output (Stereo)for standard instrument cables (TS Male ¼) included Ventilator
II Rotary-Simulation.
Pure Organ: Clean Organ-Signal without internal Rotary.
Expression-Pedal
Page 10
e.g. Yamaha FC-7
2 x MIDI IN
Page 17
SLOW/FAST 11-Pin
Only for 11 Pin-Jack!
Foot-Switch (permanent
Switch!)e.g. BOSS FS-5L
Page 10
MAIN-OUT L/R
mit VentII Sim
Page 10
Pure Organ
Clean
Organ-Signal
without internal
Rotary
Separate Bass
Separate Bass-
Pedal OUT
(separat)

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11-Pin
Rotary Jack
Page 10
MIDI-OUT
Page 18
Phones
Page 10
Separate Bass: Separate bass pedal: Here only the signal from the bass pedal is output and can thus be
optimally mixed via a mixer. In this case, the signal from the bass pedal can be separated from the other outputs
(Main-Out, Pure Organ and 11 PIN Rotary Socket) with the "Sep." button (see page 14).
USB: The USB socket of the UHL X4 V is sealed - it is used exclusively 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 modules or
synthesizers can be played together with the organ sound of the X4 V.
PHONES Jack: This is a stereo jack for connecting headphones.
11-Pin Rotary Jack: For connection of an external rotary cabinet (see page 10)
Power Switch 100V-240V 50-60 HZ (see Page 8)
Power Switch
2 Fuses
a 800 mA
AC IN 100-240 V 50-60 HZ
USB: The USB socket of the UHL X4 V is sealed - it
is used exclusively for service work on the part of
the manufacturer. Removing the USB cap can void
the manufacturer's warranty.

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Connecting the Power Cable
The X3 runs on AC power: 100, 120, 230, or 240 volts at 50–60 Hz. The voltage level is set automatically. Make
sure the X4 V power switch is set to off before you 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 country where you bought your X4 V. Do not manipulate the
cable or plug. If your power source does not have a standard grounded outlet, you should have a proper
grounding system installed by an expert before using the X4V. This will reduce the risk of a shock.

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
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Console
Drawbars Upper
Page 11
Percussion
Page 12
Chorus / 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
Page 16
Tone
Page 16
Hall
Page 14
Presets
Page 15
Separate Bass
Page 7+14
Split
Page 14
Bass Sustain
Halfmoon-3-Way Switch
Rotary

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Startup
Connecting the Power Cable:
Make sure the power switch (see page 7)
10
is set to OFF before you connect the power cable at the X4 V.
Plug the power cable into a grounded outlet only.
The X4 V runs on AC power: 100, 120, 230, or 240 volts at 50–60 Hz.
Audio Connections
Make sure your sound system is at a safe volume level. Also make sure that the X3’s
VOLUME knob (on the far left side of the front panel) is all the way down.
Plug in a pair of stereo headphones or run two standard 1/4‐inch instrument cables from the
MAIN outputs of the X4 V to your amplifier or mixer 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 [RUN] and [SLOW/FAST] control buttons perform the same functions as with
the internal rotary simulation. The rotary speed can also be controlled with a foot switch like e.g. a BOSS FS-5L
(latch mode switch with stereo TS ¼ inch plug only! See page 6).
Volume/Expression-Pedal Input
Connect an expression Pedal like the Yamaha FC7 or similar (10k to 47k) here to control organ volume while
you are playing (see page 6).
Foot Switch Input - Slow/Fast Vent II (Slow/Fast Vent Jack)
Note: Momentary Foot-Switch !! e.g. BOSS FS-5U!!
The contact must be open and close only briefly when the button is pressed, then immediately opens again
when you let go (see Page 6)