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

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

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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.

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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)

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Controls
Drawbars
9 Drawbars Upper-Manual 2 Drawbars Bass-Pedal Sustain 9 Drawbars Lower-Manual
16“ 5 1/3“ 8“ 4“ 2 2/3“ 2“ 1 3/5“ 1 1/3“ 1“ 16“ 8“ Bass-Pedal 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 controls sustain of the bass sound. The drawbars are
used for adjusting the basic harmonics of the X4 V. This offers a wealth of sound shaping options. All 9 drawbars
pulled out results in 9 different harmonic tones per key.

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Percussion
Percussion: ON/OFF SOFT FAST 3 RD
Percussion changes the attack characteristic of a note by adding an percussion signal to the note that is played.
The volume of the percussion is adjusted by the 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 percussion effect for every note requires that the currently pressed key is fully
released prior to playing the next one. The percussion can only be enabled on the upper manual. All percussion
parameters like volume, decay are programmable in the Menu/Display panel (see page 27).

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Chorus/Vibrato
Rotary switch is used for selecting one of the six effects vibrato V1, V2, V3 or chorus C1, C2, C3. The two
push-buttons Vib/Chorus Upper and Lower are used to switch the effect on/off, either for the upper or lower
manual. Ex-factory the Vib/Chorus 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 the display is switched off here. This is also very helpful when setting the
EQ. The change can be heard or checked in one click.
Drive Amp 122 Bypass: The overdrive sim is completely deactivated. The organ sounds a bit cleaner then.
Sixfold Rotary Switch
VIB/Chorus
VIB/Chorus
Upper
VIB/Chorus
Lower
EQ-Bypass
Drive Amp122
Bypass

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Reverb, Separate Bass, Split
REV1 REV2 REV3 (REV1 + REV2) SPLIT
Reverb:
The X4 V features a well-balanced reverb which emulates a vintage spring reverb.
There are four reverb levels available: OFF, REV 1, REV 2 and REV 3.
To activate the reverb press one of the buttons [REV1] or [REV2]. To obtain reverb level REV3 both buttons
[REV1+ REV2] must be pressed simultaneously. The individual levels of REV1, REV2, and REV3 can be adjusted
to taste in the Menu/Display panel (see page 23).
Split-Mode:
Keyboard split is available for the lower or upper manual with a selectable split point. Two keyboard zones are
easily set up by assigning any desired key split zones.
Lower to Upper: Lower to Upper: Press the key of the desired split point on the upper manual, hold while
pressing the [Split] button. Now the left part 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 keys while
pressing the [Split] button. Now the left part of the keyboard plays the Pedal Bass. Use the Pedal Bass drawbars
to adjust the Pedal Bass sound.
Pedal to Lower (X4 V-2 only!): Press two adjacent keys at the desired split point on the lower manual, hold both
keys while pressing the [Split] button. Now the left part of the lower keyboard plays the Pedal Bass. Use the
Pedal Bass drawbars to adjust the Pedal Bass sound.
Note: see also „Split-Mode“on Page 25
Sep. (Separate bass): The pedal bass is always
separately available at the "Separate Bass" output
socket on the back of the organ.
With the "Sep." button you can switch off the
pedal bass at the outputs "Main-Out L + R" "Pure
Organ" and "11-Pin". The pedal bass is now
connected to the mixer via the "Separate Bass"
output. Now you can mix the Pedalbass
completely detached from the rest of the organ
(volume, possibly EQ).

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Common-Presets
The X4 V provides 14 common presets. All settings of a sound are stored in these presets, such as percussion,
chorus/vibrato, reverb, split . If none of the four LEDs is lit, the "live" setting is selected which means that
drawbars and buttons are used to adjust the sound. When pressing a preset button the stored preset sound is
recalled. Pressing the button again switches the X4 V back to "live" setting.
14 „Common“ Presets (mit Taster 1 –4)
Storing a preset:
After you adjusted 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 recalled with
the respective button.
Common-Presets:
The number of common presets is derived from different combinations of the 4 preset buttons.
Up to 3 button can be pressed simultaneously to store and recall a preset:
Example 1: The preset named 1 is button 1.
Example 2: The preset named 32 is a combination of the buttons 3 + 2.
Example 3: The preset named 23 is a combination of the buttons 2 + 3.
In total there are 14 presets available.
What is stored in a common preset?
Drawbar settings (upper, lower, pedal)
+ Settings of percussion, reverb, chorus/vibrato, split

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Master Volume, Drive Amp122, Tone, “Halfmoon-Switch”
Master Volume: If, for example, the overdrive control "Drive Amp122" is turned up, the overall level becomes
considerably louder. This can also lead to the 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: In addition to the accurate rotary simulation the X4 V also features a separate 122 amp output.
It emulates the sound and characteristics of the 12BH7 tube and the two 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 of the Vent II brings finest and great overdrive results!
Tone: Cranked up high frequencies accentuate the key click and percussion. Turn the knob counter-clockwise to
reduce high frequencies.
Note: It is recommended to discreetly dial back the high frequencies if the X4 V is played with
very high volume levels during live performance.
„Halfmoon-Switch“: The "rotors" of the internal Rotary Vent II, as well as those of an external Rotary cabinet
connected to the 11pin socket, are controlled with the left hand (Slow, Stop, Fast) with this triple knob.
Tone
Drive Amp122
Master Volume
Halfmoon-Switch
Slow Stop Fast

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MIDI
MIDI-IN (2x)
The two Midi 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) 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-Sockets of the X3-1. To play the Lower
select MIDI Channel 2
To play the Pedal-Bass of the X3-1:
Connect a MIDI-Keyboard to one of the both
MIDI-IN-Sockets of the X3-1. To play the Lower
select MIDI Channel 3

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Example X4 V-2:
MIDI-OUT
The Midi-Out can be used to connect a sound module or synthesizer which then can be played together with the
organ sound of the X3. This way the X3 can be used as a velocity sensitive 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 expander with an e-piano sound without its own organ sound. For this, the
Local On/Off in would have to be set to "Upr+Ped ON".
To play the Pedal-Bass of the X3-2:
Connect a MIDI-Keyboard to one of the both
MIDI-IN-Sockets of the X3-1. To play the Lower
select MIDI Channel 3
MIDI-OUT

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MIDI Konfiguration Menu-Display
sets accepted overall volume CC number (default #7).
sets accepted swell/expression CC number (default #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 –MIDI IN 1 is routed to MIDI OUT as THRU, Inp 2 Thru –do not use, USB
InThru –USB MIDI IN is routed to MIDI OUT as THRU
sets MIDI base receive channel 1 to 10 (upper manual, lower manual is
on +1, pedals on +2).

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Menu/Display
Menu Panel Display Controls
The menu panel display offers full access to many X3 parameters like percussion, chorus/vibrato, keyclick, reverb,
factory presets, leakage, tapering. All parameters can be stored individually.
Use Up/Down buttons to scroll through menu items.
Use the Data Entry incremental encoder knob to change parameter values by turning the knob either 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 asterisk disappears.
.
If you change more than one parameter, every single parameter change must be stored individually.
To find parameters which have not been stored, just use the Up/Down buttons to scroll through the
complete menu and look out for asterisks. Then press the Data Entry knob for 2 seconds to permanently
store each parameter still showing an asterisk.
Menu Up - Button
Menu Down -Button
Data/Entry Button
(Rotary-Switch + Button)
Display