KEYBOARDPARTNER HX3 Drawbar Controller User manual

User Manual
HX3.5 Mainboard
(as of Firmware-Version 5.655, July 2021)
keyboardpartner.com

2 HX3.5 Mainboard
Please read this manual carefully before using the HX3 Mainboard.
Only use appropriate power supply as advised. Input voltages exceeding
15V may damage the device.
Designed for indoor use only. Do not use HX3 Mainboard in moist places.
Do not spill liquids or solvents into unit.
Refer to qualified technician or service representative if problems occur.
Only clean with damp soft cloth. Using detergents or solvents may
deteriorate finish and lettering.
Keep packaging in case of service shipment.
EU conformity declaration
The producer/distributor
KEYBOARDPARTNER UG
Entwicklung elektronischer Musikinstrumente
Carsten Meyer
Ithweg 37, D-30851 Langenhagen
[e-mail]
hereby declares, that the product
HX3.5 Mainboard
has been designed, produced and examined in compliance with the DIN VDE 0580 standard and in
accordance with the EU Low Voltage Directive.
Following directives, standards and guidelines have been used:
EMV-Richtlinie 2014/30/EU
Niederspannungsrichtlinie 2014/35 EU
RoHS-Richtlinie 2011/65/EU
Langenhagen, May 2021
____________________________
Carsten Meyer / Geschäftsführer

HX3.5 Mainboard 3
Contents
HX3.5 Mainboard.............................................................................................................................4
Features.......................................................................................................................................4
HX3 Apps and Tools........................................................................................................................5
HX3.5 Manager............................................................................................................................5
TouchOSC for HX3.5 ...................................................................................................................5
Jack Connections.............................................................................................................................6
Swell Pedal/Volume Control.........................................................................................................6
Connectors and Jumpers on the Mainboard....................................................................................7
Controls............................................................................................................................................8
Panel16........................................................................................................................................8
Preset12-2/Preset16 ....................................................................................................................8
Menu Panel......................................................................................................................................9
Menu Overview ..........................................................................................................................10
Presets....................................................................................................................................10
Upper Voice............................................................................................................................11
Lower Voice............................................................................................................................12
Pedal Voice.............................................................................................................................13
Audio Setup............................................................................................................................14
Rotary Setup...........................................................................................................................15
Percussion Setup....................................................................................................................15
Vibrato Setup..........................................................................................................................16
Phasing Mode.........................................................................................................................16
Reverb Levels.........................................................................................................................17
Generator Setup.....................................................................................................................17
Keyboard/MIDI........................................................................................................................20
MIDI Control...................................................................................................................................22
Panic button ...............................................................................................................................22
Using HX3 with Voce MIDI Drawbars .....................................................................................23
Using HX3 with Doepfer d3c or other NI B4 drawbar controller..............................................23
Using HX3 with Hammond XK/SK series................................................................................23
Using HX3 with Nord C1 / C2 / C2D / electro 4.......................................................................23
Using HX3 with GSi DMC-122................................................................................................24
How To …?....................................................................................................................................25
HX3 WiFi interface.........................................................................................................................25
Serial numbers and licenses..........................................................................................................26

4 HX3.5 Mainboard
HX3.5 Mainboard
HX3.5 is a tonewheel emulator with all the features of a classic electromagnetic organ. It is
controllable via MIDI with selectable CC sets for various keyboards. The CC sets are editable.
Alternatively, the module can be controlled via Fatar or other keyboards as well as drawbars,
switches and buttons. HX3.5 offers unlimited polyphony, 100 presets, 3 x 15 drawbar presets and
CaM rotor simulation with rotary speaker, scanner vibrato and amp 122. General MIDI sounds
such as piano and strings are also available.
As an option (extended license required), the HX3 RealOrgan engine is capable of emulating all
electromagnetic organs including the famous H100, combo organs, concert organs of the 70s and
80s like Böhm Orchester and Wersi Helios. This implies up to 15 harmonics, up to 12 drawbars
per manual with individual mixtures, including phasing rotor (WersiVoice). An ADSR envelope is
available on all drawbars, also H100 percussion and "Harp Sustain". Various tone generator
waveforms are selectable, for "cheesy" combo organs as well as fully fledged concert organs.
Features
Compact organ emulator circuit board, 200 x 100 mm
Authentic reproduction of the tone generator. Key contacts, percussion, rotary effect, scanner
vibrato and TubeAmp realized using physical modeling in pure hardware.
Extremely low internal latency of 50 microseconds Key-to-Audio. However, MIDI transmission
delay is about 1 ms per note played.
Natural key click due to 9 (B3 mode) or 12 (H100 mode) contacts closing in succession
Authentic ‘CaM Rotor’ simulation with 122 tube amp
General MIDI (GM) Synth, 54x polyphonic
Tunable in range of A = 433 through 447 Hz
Effects DSP providing 3 reverb levels
Dual MIDI IN for two keyboards or bass pedal
LCD display and menu system available
Swell (expression) pedal and footswitch jacks
USB for MIDI over USB, firmware updates, parameter editing
Default MIDI setting: channels 1/2/3 for upper/lower/bass, MIDI CC NI B4.
DC input 9 to 12V, 500 mA min., 5.5/2.1 mm plug, plus on center or through connector PL12,
alternatively 5V through connector PL11.
Trademarks Hammond®, B3® and Leslie® belong to Hammond Suzuki Corporation (Japan). Trademark NI B4
belongs to Native Instruments GmbH, Germany. Product and company names used in this document apply for
illustration and example purposes only. Keyboardpartner is not related to these trade marks in any way.

HX3.5 Mainboard 5
HX3 Apps and Tools
The Menu Panel chapter describes how you can fully control the HX3 system via a menu panel
connected to the HX3.5 mainboard. However, there are other, more comfortable options: Use the
Panel in the HX3.5 Manager for operation via PC or notebook. Use TouchOSC for operation via
tablet or smartphone.
HX3.5 Manager
The HX3.5 Manager supports the use of your HX3 device
with a variety of functions:
The Panel contains switches and drawbars for your HX3
device. In the panel window you can adjust sounds and
effects, create, name and save presets. When the panel is
open, you can recall presets live using the function keys on
your PC keyboard.
The Preset Mover makes it easy to manage presets. It lets
you try out, move, and rename presets. You can transfer
presets from a file to the HX3 device or save them to a file.
The Editor lets you set up the HX3.5 for all conceivable
hardware configurations, gives you access to all available
parameters, and lets you fine-tune sounds and effects.
With the CC Set Editor you can edit the MIDI CC Sets of
the HX3, create CC Sets or load them from a file from your
PC. This allows you to get the most out of your keyboard
controller, even if none of the included CC Sets fit right
away.
The Updater updates the operating software of your HX3
device completely in an automatic process or individual
selected parts. Use the Updater also to activate an
Extended License or to change the username.
TouchOSC for HX3.5
Control your HX3 device via tablet or smartphone with the TouchOSC app from Hexler, which you
can get for a few euros in the Apple App Store or Google Play. For wireless connection of iOS or
Android mobile devices we offer a WLAN interface. iOS devices can also communicate with
TouchOSC via MIDI over USB.

6 HX3.5 Mainboard
Jack Connections
HX3.5 mainboard jack connections from left to right:
SWELL PEDAL ¼” stereo jack: Expression pedal input is compatible with Yamaha FC-7 and
similar expression pedals. Plug connection: Sleeve = ground / potentiometer start, ring =
potentiometer tap, tip = potentiometer end. Expression may also be remote-controlled by MIDI
control change.
FOOT SWITCH ¼” stereo jack: Single or double footswitch controls simulated rotary speed:
SLOW/FAST on plug tip, RUN/STOP on plug ring. Please use latching foot switches;
momentary (button type) switches are not supported. If single footswitch used, Rotary is
always on RUN (no plug ring, input grounded by plug sleeve).
USB USB B-type connector for MIDI over USB, updates, parameter editing. USB port and
MIDI IN/OUT cannot be used at the same time.
MIDI IN/OUT Factory default secondary MIDI input for additional lower manual, bass pedal or
MIDI controller. Optionally jumpered to supply +5V/200ma to our Drawbar Controller (phantom
voltage) or pedal scan board Bass25. May be changed to act as MIDI OUT by internal jumper
swap. See HX3.5 Installation Manual for details.
MIDI IN Primary input from MIDI keyboard.
DC IN: Use stabilized DC wall wart 9 to 12V with at least 500mA current output, inner/outer
plug diameter 2.1/5.5 mm on DC input jack. Polarity: positive voltage on inner tip.
AUDIO1/AUDIO2: Main audio stereo output. Output level is approx. 300 mV at full swell.
For control of parameter settings, we recommend the use of our MenuPanel. Installing the menu
panel and other peripherals is described in the HX3.5 Installation Manual. The menu system for a
standard organ configuration, using drawbars, our Panel16 switch button board, and keybeds
connected through our key scanning boards is described below.
Please note: Factory default programming is the HX3 MIDI Expander firmware. You may set up
the HX3.5 mainboard conveniently for your organ configuration by means of the HX3.5 Editor. See
the HX3.5 Manager User Manual for details. All software, documentation, and manuals are
available online on keyboardpartner.com in section Support & Download.
Swell Pedal/Volume Control
Output level of all output channels is controlled by Master Volume setting in menu or MIDI CC #7
“Volume”, whichever occurs last.
Organ's swell pedal position is controlled by an expression pedal or MIDI CC #11 “Expression”,
whichever occurs last. HX3 resembles a loudness curve similar to the swell pedal of a classic
tonewheel organ, so expression volume will not reach zero. We recommend connecting an
expression pedal Yamaha FC-7 or similar (1/4" jack, 10k to 47k total resistance) directly to the
HX3 module. By using an expression pedal rather than MIDI sweller control will be faster and
more precise.
MIDI CC #11 and #7 may be changed by menu to other valid MIDI CC numbers.

HX3.5 Mainboard 7
Connectors and Jumpers on the Mainboard
PL1: HX3 Extension Board (optional)
PL2: 1/4" jack Right Audio Output
PL3: USB B type socket (USB MIDI)
PL4: Stereo Audio Output; center = GND
PL5: Stereo Audio Mixer Input; center = GND
PL6: 1/4" jack Left Audio Output
PL7: DSP Debug (do not use)
PL8: FPGA Debug (do not use)
PL9: Scan Board (FatarScan2)
PL10: DC input, 5V or 9..12V/500mA, plus on center
PL11: DC input/output, 5V/500mA
PL12: DC input, 9..12V/500mA
PL13: Scan Board (Scan16, Scan61 or Bass25)
PL14: MIDI IN1
PL15: MIDI IN2/OUT
PL16: Aux digital output (do not use)
PL17: SD Card Adaptor (or ISP AVR)
PL18: MIDI IN/OUT Configuration Jumpers
PL19: Serial Interface for FTDI cable
PL20: MPX Bus (HX3 mk5 new drawbars)
PL21: MenuPanel/Preset-Boards, I2C
PL22: Analog Upper (in mk4 compatibility mode)
PL23: Analog Lower (in mk4 compatibility mode)
PL24: Vibrato Rotary Switch
PL25: Buttons/Switches Perc, Vib, Rotary control
PL26: Buttons/Switches Common Presets or Vibrato
Buttons, Reverb, Bass On Amp, Split
PL27: 1/4" jack Footswitch Rotary control
PL28: 1/4" jack Swell Pedal (FC-7 compatible)
PL29: Preamp control outputs, var. control signals
PL30: 3 pin header Swell Pedal (FC-7 compatible)
PL31: 3 pin header Footswitch Rotary control
PL32: 4pin USB header to HX3.5 Extension Board
PL33: Bluetooth/WiFi Module
JP1: Analog Ground (Probe Connection), both pins
JP2: 5V DC input on PL 10/PL12 if inserted
JP3: Digital Ground (Probe Connection), both pins
JP4: Config Disable (do not use)
JP5: Swell on Analog Input 12 (do not use)
JP6: Swell on AVR analog input PA2 (default)
JP7: Swell on AVR analog input PA7 (do not use)
JP8: Use USB for power supply (not recommended)
Default jumper setting: Insert JP6. Insert 2 jumpers on PL10 pin 2-3 and 5-6 (leftmost pin is 1) for
secondary MIDI IN.
All details about the different possible hardware configurations and a larger picture of the board
can be found in the HX3.5 Installation Manual.

8 HX3.5 Mainboard
Controls
Up to 64 pushbuttons or switches and up to 88 potentiometers (also drawbars) can be connected
to the HX3.5 mainboard.
Panel16
In the default configuration, a Panel16 is required. Default assignment of the Panel16 (parameter
1504 in the editor = 0, 5108 = 60, 5109 = 61, 5110 = 62, 5111 = 63):
If a rotary switch is used to switch between V1...V3/C1...C3 (parameter 1497 = 0), the four buttons
at the bottom left can be used to quickly select presets (parameter 1504 = 2):
The preset buttons are binary coded, i.e. preset 1 toggles between 0 and 1, preset 2 between 0
and 2, preset 3 between 0 and 4, preset 4 between 0 and 8. You can press several buttons
simultaneously and thus select values from 0 to 15.
The buttons of the Panel16 can be assigned differently in the editor as desired. Preset buttons can
optionally be used for drawbar presets (like the inverse buttons of a classic Hammond console).
See section 'Setting up the Hardware Configuration' in the HX3.5 Manager manual.
Preset12-2/Preset16
The drawbar presets (Voices) can be switched independently from the common presets and are
also selectable via the Menu Panel. Register boards Preset12-2 or Preset16 are required for fast
switching by keystroke.
Use the Preset12-2 board in conjunction with inverse preset keys on the keyboard. This allows
you to recall 2 x 12 drawbar presets.
The Preset16 board has two rows of 8 LED buttons each. A second Preset16 board can be added.
All details about the configuration in the HX3.5 Installation Manual.
To save a drawbar setting as a voice, press and hold the target button for two seconds.
If a common preset is selected and thus overwrites the current voice, the LED of the respective
button flashes. Press the button if the voice preset is to take effect again instead of the drawbar
preset stored in the common preset.

HX3.5 Mainboard 9
Menu Panel
On power on, the Preset/Drawbar Menu is present. Pressing the
rotary knob twice briefly will let you return to the home position from
any other menu position.
Turn the rotary knob to scroll through the menu. A hatched arrow indicates the menu position.
Press the rotary knob once to edit a parameter value. A white arrow indicates the selected
entry that may be altered. Turn the rotary knob to change that value. Press the rotary know once
again to continue scrolling through the menu.
In the preset/drawbar menu the rotary knob selects the Presets 0 …99. Presets consist of
drawbar settings and optionally tab switch settings (percussion, vibrato etc., including rotary
Run/Fast/Slow), volume and 122 tube amp gain as well as all other effects.
Scroll downwards (= turn the rotary knob clockwise) to the drawbar
presets (Voices) for Upper manual, Lower manual, and Pedal. The
top display line shows the drawbar positions as numbers from 0 –8.
Scroll down one more step to get to the Master Volume setting. Master Volume adjusts the
overall volume for all outputs. Higher values are recommended for the best signal to noise ratio.
Scroll down to the TubeAmp Gain setting. TubeAmp Gain sets the
internal tube amp simulation.
A star appears at the bottom right of the display, if a parameter value has been changed and
differs from the stored preset. To store values as Preset, keep the encoder knob pressed until the
prompt “Save to Preset #XX” appears on the display. (“XX” representing the current preset
number). Alter the number as desired and press the knob once again to have all settings stored.
Parameter values tagged by the letter Care part of a single preset. Values tagged by Dapply to
all presets and are stored as defaults. The assignment can be changed in the editor of the HX3.5
manager with parameter #1498 or in the panel.
Values tagged by U, L, or Pare part of the current voice for upper, lower, or pedal. These are
saved as Voice (Drawbar settings only) if you save them while one of these markers is displayed.

10 HX3.5 Mainboard
Menu Overview
The HX3 menu is arranged in function groups and has two levels: The main menu shown in
bold contains the parameters that are frequently used. In the submenu of the respective function
group, shown in blue, you will find parameters that are used less frequently.
Press the lower button to switch from a main menu to a submenu. An "S" symbol then appears at
the bottom right of the display. Press the upper button to return to the main menu.
The menus are arranged in a ring. The last menu item in the list is therefore followed by the first
again when you scroll down further, and the same applies vice versa.
Some menu items are only available with the Extended License. These are shown in italics in the
following overview. It also depends on which organ model is selected (default: B3). In the
overview, a light blue Hmarks menu items that only appear in H100 mode, and a red E marks
menu items that are available in EnvelopeGen (EG) mode. Depending on the device type, some
menu items are omitted or replaced by physical controls.
As of firmware version 5.637, the menu is significantly shorter than in previous versions. Rarely
used parameters have been removed from the menu to improve clarity, but are still adjustable with
TouchOSC, with the Panel or with the Editor of the HX3.5 Manager. Please use this method for
the manifold settings in EG mode.
The editor can be used to remove unwanted menu items from the menu.
Presets
HX3 Preset: Selection of Common Presets 00 ... 99.
Common Presets include Drawbar settings and optionally Tab Switch settings (Percussion,
Vibrato etc.), Rotary Run/Fast/Slow, Master Volume, TubeAmpGain, and other effect settings. In
the HX3.5 Manager panel you can select which parameters are saved in presets.
Preset 0 takes over the live settings of drawbars and switches, if they exist. All other settings in
Preset 0 are stored as default values and take effect when the HX3 device is switched on or
Preset 0 is selected again.
LED Dimmer: Brightness of the LEDs on connected boards and on the menu panel of the HX3
MIDI Expander (from mid 2020).
SD File Exec: Selection of a script file on the SD card when the SD card adapter is connected.
WiFi Init Def: Reset WLAN interface to factory default.
Preset Init: Sets the live preset 0 to a basic B3 organ sound.

HX3.5 Mainboard 11
Upper Voice
U00 ... U15: Selection of the drawbar presets (voices). The upper line shows the drawbar settings
as numbers from 0 ... 8. In H100 and EnvelopeGen mode, three mixer drawbars are active in
addition to the standard drawbars.
Voice 0 takes over the live setting of the drawbars, if present (not with HX3 MIDI Expander). An
additional 15 settings can be stored to maintain compatibility with organs with preset keys.
UpperDB 16 ... UpperDB 1: Settings of the standard drawbars for the upper manual.
HEUpperDB Mix1 ... UpperDB Mix 3: Settings of the mixture drawbars for the upper manual.
Mixtures consist of up to 3 higher harmonics with individual levels.
In H100 mode the following options are available:
HH100 Harp Sustain: Activates the Harp Sustain Effect, 4‘ harmonics fading, polyphonic, no
vibrato. Independent of 4‘ drawbar and 4‘ percussion.
HH100 2nd Voice: Harmonics selected by H-Perc Mask sound continuously at full level.
Percussion bypasses vibrato like on the H100. Combined with drawbar voices on vibrato and
2nd Voice activated this results in a neat chorus effect.
HE H-Perc 16 …Mix 3: Selects harmonics for the
percussion/2nd Voice circuit. Each “o”-symbol represents a
harmonic from 16’ up to Mixture 3. The selected harmonic that
may be activated by turning the encoder is underlined. If activated the respective “o”-symbol is
filled white.
H H100 PercToDry: Harmonics selected by H-Perc Mask are bypassing vibrato and phasing
rotor “dry”.
In addition to the organ sounds, General MIDI (GM) instruments are available that can sound as
layers simultaneously. To activate a GM instrument, set its level as desired. To deactivate the
organ, set all drawbars to 0
UpperGM Prg 1: Selection of GM instrument by program number
UpperGM Lvl 1: Level setting of GM voice
UpperGM Hrm 1: Harmonic transposition of GM voice
With the Extended License, another sound layer can be used. This may be detuned to achieve a
richer sound.
UpperGM Prg 2: Selection of second GM instrument (overlay)
UpperGM Lvl 2: Level setting of second GM voice
UpperGM Hrm 2: Harmonic transposition of second GM voice
UpperGM Detn2: Detuning of second GM voice

12 HX3.5 Mainboard
Lower Voice
L00 ... L15: Selection of the drawbar presets (voices). The upper line shows the drawbar settings
as numbers from 0 ... 8. The set keyboard mode (mechanical or electronic keying) is also valid for
the lower manual. In H100 and EnvelopeGen mode three mixer drawbars become active in
addition to the standard drawbars.
Voice 0 takes over the live setting of the drawbars, if present (not with HX3 MIDI Expander). An
additional 15 settings can be stored to maintain compatibility with organs with preset keys.
LowerDB 16 ... LowerDB 1: Drawbar settings for the lower manual.
HELowerDB Mix1 ... LowerDB Mix 3: Mixture drawbar settings for the lower manual. Mixes
consist of up to 3 higher harmonics with individual levels. Unlike the original H100, HX3.5 also
provides three mixtures for the lower manual.
The same selection of General MIDI instruments is available for the lower manual as for the upper
manual.
LowerGM Prg 1: Selection of the GM instrument by program number.
LowerGM Lvl 1: Level setting of the GM Voice
LowerGM Hrm 1: Harmonic transposition of the GM voice
With the Extended License, another sound layer can be used. This may be detuned to achieve a
richer sound.
LowerGM Prg 2: Selection of the second GM instrument (overlay)
LowerGM Lvl 2: Level setting of the second GM Voice
LowerGM Hrm 2: harmonic transposition of the second GM voice
LowerGM Detn2: Detuning of the second GM-Voice

HX3.5 Mainboard 13
Pedal Voice
P00 …P15: Selection of the drawbar presets (voices). The upper line shows the drawbar settings
as numbers from 0 ... 8.
PedalDB 16, PedalDB 8: Drawbar settings for the pedal.
PedalDB 16H, PedalDB 8H: Drawbar settings for the pedal, smoother sound.
Pedal Release: Changes decay time of pedal sound (often called string bass "sustain" on
other organs).
The same selection of General MIDI controllers is available for the bass pedal as for the manual.
PedalGM Prg 1: Selection of the GM instrument by program number.
PedalGM Lvl 1: Level setting of the GM Voice
PedalGM Hrm 1: Harmonic transposition of the GM voice
With the Extended License, another sound layer can be used. This may be detuned to achieve a
richer sound.
PedalGM Prg 2: Selection of the second GM instrument (overlay)
PedalGM Lvl 2: Level setting of the second GM Voice
PedalGM Hrm 2: harmonic transposition of the second GM voice
PedalGM Detn2: Detuning of the second GM-Voice

14 HX3.5 Mainboard
Audio Setup
Master Volume: Sets the volume for all outputs. Higher values result in a better signal to noise
ratio.
TubeAmp Gain: Sets the level of the simulated tube amplifier. The amplifier enters saturation and
distorts at high values and higher swell pedal values. So the distortion level is controlled with the
swell pedal as well. If Gain Vol Compensation is set in parameter 1501 of the editor, Gain works
almost volume-neutral.
TubeAmpBypass: When ON, the rotary tube amplifier is bypassed.
The Audio Setup menu items have a common submenu:
Bass Equal: Bass level adjustment
Bass Equ Frq: Bass filter frequency, invalid if Parameter B/T is set to OFF.
Bass Equ Q: Bass filter Q (bandwidth), invalid if Parameter B/T is set to OFF
Mid Equal: Mids level adjustment
Mid Equ Frq: Mids filter frequency
Mid Equ Q: Mids filter Q (bandwidth)
Treble Equal: Treble level adjustment
Treb Equ Frq: Treble filter frequency, invalid if Parameter B/T is set to OFF.
Treb Equ Q: Treble filter Q (bandwidth), invalid if Parameter B/T is set to OFF.
Parametr B/T: Parametric equalizer also for bass/treble. If Parameter B/T is set to OFF, the
equalizers for bass and treble act as shelving filters.
Upper Lvl Adj: Allows separate upper manual default level setting.
Lower Lvl Adj: Allows separate lower manual default level setting.
Pedal Lvl Adj: Allows separate pedal default level setting.
Perc Lvl Adj: Allows percussion level setting.
PedalRotBypas: Routes the pedal signal to bypass the CaM Rotor, optionally only to the
separate pedal output, if No Pedal on Main is set in parameter 1501 of the editor.
AO28 Tone Pot: Tone potentiometer setting on preamp.
AO28 Gain Cap: Overall gain of AO28 preamp.
AO28 MinSwell: Minimum volume of swell pedal in heel position.
AO28 Tube Age: Age of the preamp tubes. The older, the more clearly the triode distortion
becomes audible.

HX3.5 Mainboard 15
Rotary Setup
Rotary Motor: RUN/STOP switch of the rotary simulation.
Rotary Fast: SLOW/FAST switch of the rotary simulation.
Bypass: Switching off the rotary simulation.
The Rotary Setup menu items have a common submenu:
HornSlowSpeed: Rotation speed of the horn in SLOW position.
RotrSlowSpeed: Rotation speed of the rotor in SLOW position.
HornFastSpeed: Rotation speed of the horn in FAST position.
RotrFastSpeed: Rotation speed of the rotor in FAST position.
HornRampUp: Horn ramp up time.
RotorRampUp: Rotor ramp up time.
HornRampDown: Horn runout time
RotorRampDown: Rotor runout time.
Rotary Throb: Microphone placement.
Rotary Spread: Stereo width.
Rotary Balnce: Level balance between rotor and horn.
Percussion Setup
Percussion: Percussion selection stepwise in all possible combinations of NORM/SOFT,
FAST/SLOW, 2nd/3rd (not for H100) and OFF. This menu is not active when EnvelopeGen mode
is set. Then only (EG ADSR) appears to indicate that a percussion effect can be achieved here by
shaping the ADSR envelope.
PercNormLvl: Level in position NORMAL.
PerSoftLvl: Level in position SOFT.
PercLongTm: Decay time in position LONG.
PercShortTm: Decay time in position SHORT.

16 HX3.5 Mainboard
Vibrato Setup
Vibrato UPR: Scanner vibrato upper manual OFF/ON.
Vibrato LWR: Scanner vibrato lower manual OFF/ON.
Vibr: Vibrato knob with the positions V1 ... C3.
The Vibrato Setup menu items have a common submenu:
Scanner Gear: Vibrato frequency.
Ch Scanner Lvl: Scanner portion in chorus positions C1 ... C3.
Ch Bypass Lvl: Dry portion in chorus positions C1 ... C3.
V1/C1 FM Mod: Modulation depth at positions V1, C1.
V2/C2 FM Mod: Modulation depth at positions V2, C2.
V3/C3 FM Mod: Modulation depth at positions V3, C3.
Phasing Mode
(not in B3 mode)
Phasing Fast: Switch to fast phasing effect.
Phasing Upper: Activates phasing rotor (PHR) for upper manual (insert effect).
Phasing Lower: Activates phasing rotor (PHR) for lower manual (insert effect).
The Phasing Mode menu items have a common submenu:
PHR We/Boe:Selection of different phasing rotor models: On = We, OFF = Boe.
PHR Ensemble: Strings effect with multiple modulation.
PHR Celeste: Deep modulation with feedback.
PHR Fading: Slow phasing effect.
PHR Weak: Weak modulation, combinable.
PHR Deep: Deeper modulation, combinable.
PHR RotFast: Fast rotary effect.
PHR Ramp up:Ramp-up effect for rotor slow/fast, combinable.
Without options, a slow rotary effect is active. Weak, Deep, RotFast and RampUp can be
combined with it. Two additional vibrato effects can be achieved by simultaneously selecting the
Ensemble and Celeste options as well as Celeste and Fading. These effects can be used, for
example, as an additional vibrato channel for the H100 emulation.
Sync PHR/Rotr:The fast / slow switching of the phasing takes place together with the rotor
switching. So one footswitch can serve for both functions.

HX3.5 Mainboard 17
Reverb Levels
Reverb Prgm: Reverb program selection (OFF, 1, 2, 3).
Reverb 1 Lvl: Reverb portion in position REV 1.
Reverb 2 Lvl: Reverb portion in position REV 2.
Reverb 3 Lvl: Reverb portion in position REV 3.
Generator Setup
Organ Preconf: Organ Model Selection affects Gating Mode and Gen&Vib Mode (see
below). With standard license B3 Mode is set.
oB3/ 9 DrB (B3 with nine drawbars per manual).
oH100/12 DrB (H100 with three additional mixed drawbars per manual).
oEnvelopeGen (electronic key contacts, ADSR envelope).
TG Tuning: Allows organ generator tuning in range from A = 433 through 447 Hz.
The generator setup menu items have a common submenu:
Gen&Vib Mode: This menu item gives you a choice of preselections of the sound
generator type and the vibrato type. This is independent of the Gating Mode.
oB3 Std 91 (91 tones sound generator)
oB3 Old 91 (as above, but more leakage, stronger key click)
oM3/M100 79 (no foldback for higher tones)
oH100 96 (96 tones sound generator)
oTR Sine 96 (phase stable frequency dividing generator like Wersi/Böhm)
oTR Square 96 (as above, more harmonics)
oLC Gen 91 (free running single sine tone generator, 91 tones, not phase-locked)
oCheesy 84 (84 tones generator, phase-locked frequency divider, „cheesy sound“, rich
harmonics
Each setting includes its own vibrato parameters, which can be customized in the Vibrato Setup
submenu.

18 HX3.5 Mainboard
Gating Mode:The HX3.5 default setting (B3 mode B3/9 Drb) implies mechanical key
contacts, 2 2/3’ or 4’ percussion, and 9 drawbars per manual. This menu item and the
following options require the extended license.
oH100/12 Drb switches to the H100 organ model including 3 additional mixtures. This
activates the respective drawbars. B3 percussion is de-activated in this mode, instead the
H-Perc 16‘ …H-Perc Mixt3 in submenu Voice Upper settings are effective if Perc ON is
selected. By means of this mask you may assign percussion individually to each available
harmonic. Percussion always sounds without vibrato and phasing rotor. This mode may be
combined with all generator models.
oEnvelopeGen (EG) substitutes “mechanical” keying, which generates a key click, by “soft”
electronic keying. This is the way to model the entirely electronic organs of the 80s. In this
mode three additional mixtures are available; the respective drawbars are active. An ADSR
envelope is applied to the harmonics selected by means of the EnvEna 16‘ …EnvEna
Mixt3 settings on the Panel or with TouchOSC.
oEG +PercDrb works like EnvelopeGen (EG), but instead of the ADSR envelope a
percussion envelope is active on the harmonics selected by the EnvEna 16‘ …EnvEna
Mixt3 settings in submenu Voice Upper. The percussion effect amount can be adjusted with
the Envelope Generator Drawbars (EGenvDB 16‘ …Mixt3) on the Panel or with TouchOSC.
oEG +TimeDrb as well works like EnvelopeGen (EG), but in this mode the Envelope
Generator Drawbars (EGenvDB 16‘ …Mixt3) affect the decay and release times of the
ADSR envelope on harmonics selected by the EnvEna 16‘ …EnvEna Mixt3 settings in
submenu Voice Upper. Thus you can create interesting transient and decay effects similar
to a Fourier synthesizer by using time settings depending on the respective harmonics.
TG WaveSet: Determines the content of harmonics in the generated sound. Automatically set
for the selected generator, but can be overridden in this menu:
oB3 25%...38% k2 –B3, clean to rich harmonics (new to old organ)
oSine 2% k2 –clean LSI/transistor sine generator
oSawt Fltrd –Sawtooth-like tone
oSine LC Gen –sine wave generator with moderate k2 content
oSine TOSGen –square wave generator with sine wave filtering, sounds slighty hollow
TG Flutter: Adjusts tone generator "sloppyness" (spring clutch tension, bearing precision, and
resulting slow phase shifts and pitch changes).
TG Leakage: Sets tone generator leakage (crosstalk noise of adjacent notes, “growl”).

HX3.5 Mainboard 19
TG Tapering: Sets tone generator age and characteristic:
oYear 1955 (very aged caps, mellow sound)
oYear 1961 (aged wax caps, jazz-type sound)
oYear 1972 (new “red” caps, rock-type sound)
oRecapped (more aggressive)
oStraightLin (no tapering, equal loudness)
oTwangy (emphasises higher notes)
ContSpringFlx: Adjusts key contact spring flex, thereby affecting click frequency.
ContSpringDmp: Adjusts key contact spring damping, thereby affecting click length.
ContEarlyActn: Fatar keyboards only: Sound triggering on upper key contact. If OFF, the
organ sound is triggered with the lower key contact. MIDI NOTE ON on the other hand is
always sent with velocity and thus after closing the lower contact.
NoDB1@Perc: With the original, the 1' foot position is switched off during percussion when
PERC is ON. This behavior can be switched off here.
High Foldback: Foldback mode for upper octaves (ON = B3, OFF = M3/M100).
DB16 1st Oct: Controls foldback behaviour on 16' lowest octave. Foldback is configurable in 4
settings:
oFoldback –foldback with full level,
oFull –no foldback ("all way down") with full level (like H 100®) or
oFoldback muted –foldback with muted level (original B3® behaviour),
oFull muted –no foldback ("all way down") with muted level.

20 HX3.5 Mainboard
Keyboard/MIDI
MIDI Transpos: Allows transposition of sound generation by up to +24/-24 half note steps. Note:
Like the original, tonewheel generator includes 5 octaves. Therefore, notes outside this range do
not sound.
KeyTranspos: Transposes the note number generated by a directly connected keybed.
Local On/Off: Interrupts the connection from a directly connected keyboard to the tone
generator. Notes are only sent via MIDI.
Split Keyb: When ON, the keyboard is split into two zones at the set split point.
Split Point: Sets split point (when split is ON) as key number (24 is second „C“ on manual).
Split Mode: Default split setting on power-up, engaged when split set to ON.
o'PedalToLower', map pedal to lower manual up to split point.
o'LowerToUpper', map lower to upper manual up to split point.
o'PedalToUpper', map pedal to upper manual up to split point.
o'LowerToU +1', map lower to upper manual up to split point, transpose lower +1 octave.
o'LowerToU +2' map lower to upper manual up to split point, transpose lower +2 octave.
o‘LwrAddPedal’, links the pedal to the lower manual up to the split point.
Split point and split mode may also be changed by one of the following procedures:
oPedal to Lower: Press a single key on lower manual key while switching SPLIT on to obtain a
custom split point.
oLower Add Pedal: Press a two keys on lower manual key while switching SPLIT to link the
pedal to lower manual up to the split point.
oLower to Upper: Press a single key on upper manual while switching SPLIT on to map lower
to upper manual up to this key.
oPedal to Upper: Press two keys simultaneously on upper manual while switching SPLIT on to
map pedal to upper manual up to highest of both keys pressed (useful for playing pedal bass
lines on single manual keyboards without bass pedal).
oLower to Upper +1: Press three keys simultaneously on upper manual while switching SPLIT
on to map lower to upper manual up to highest of all keys pressed. Lower notes range is
transposed one octave up (useful for left-hand 8’ accompaniment chords on single manual
keyboards).
oLower to Upper +2: Press four keys simultaneously on upper manual while switching SPLIT
on to map lower to upper manual up to highest of all keys pressed. Lower notes range is
transposed two octaves up (useful for left-hand 16’ accompaniment chords on single manual
keyboards).