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1.1 Volume Control 

Output level

 of all output channels is controlled by 

Master Volume

 rotary knob 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. The loudness curve is 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. 

MIDI CC #11 and  #7 may be altered via menu to any valid  MIDI CC Number. 

2. Panel Buttons 

HX3 drawbar expander has two sets of drawbars for upper and lower manual as well as pedal and 
pedal sustain drawbars, and a set of 16 buttons. LED-illuminated buttons control main organ 
functions as found on a real B3: 

 

Perc ON

 toggles percussion on/off. When on, drawbar 

1’ is cancelled (see 

No DB1 @Perc

 

parameter below to change cancelling behaviour) 

 

Perc SOFT

 toggles normal/soft percussion. Drawbar volume is muted in 

“normal” position 

 

Perc FAST

 toggles slow/fast percussion decay 

 

Perc 3RD

 toggles 2

nd

 and 3

rd

 percussion harmonic 

Similar to Hammond® console organs, drawbar volume is muted in 

“normal” position to 

emphasize percussion effect. Muting level in 

“normal” position may be changed by menu. 

 

VIBRATO UPPER 

toggles vibrato on upper manual on/off 

 

VIBRATO LOWER 

toggles vibrato on lower manual on/off 

Rotary buttons control both internal rotary simulation as well as a Leslie® speaker connected to 
11-pin socket simultaneously. Rotary simulation may be controlled by footswitch or panel buttons 
alternatively. A flashing LED indicates rotary speed. 

 

ROTARY RUN 

toggles rotary motors on/off 

 

ROTARY SPEED 

toggles slow/fast rotary speed  

Six vibrato/chorus variations are set by 4 buttons: 

 

VIBRATO V1

 sets vibrato/chorus depth 1 (shallow) 

 

VIBRATO V2

 sets vibrato/chorus depth 2 (medium) 

 

VIBRATO V3

 sets vibrato/chorus depth 3 (deep) 

 

VIBRATO CHORUS

 toggles between vibrato and chorus mode. Vibrato setting does not 

have any effect if VIBRATO UPPER and VIBRATO LOWER are both off. 

 

REVERB I

 and 

REVERB II

 select 3 different reverb settings and reverb off. Press I and II 

simultaneously to select reverb III. 

 

CONFIG A/B

 selects the pedal signal insert point before or after the Preamp simulation. In 

many cases it is desirable to limit the overdrive effect to the manuals. 

 

 CONFIG SPLIT

 sets keyboard split mode on or off. See 

3.2.1 Split Configuration 

for 

details. 

Summary of Contents for HX3 Drawbar Expander Version 5

Page 1: ...drawbars plus pedal Authentic reproduction of generator tapering key contacts percussion and vibrato by FPGA Field Programmable Gate Array and physical modelling Tunable in range of A 433 through 447 Hz Extremely low internal latency of 50 microseconds Key to Audio However MIDI transmission delays are about 1 ms per note played Natural key click by rattling contacts Accurate Rotary simulation with...

Page 2: ...s Do not spill liquids or solvents into unit No user serviceable parts inside Refer to qualified technician or service representative if problems occur EU conformity declaration The producer distributor KEYBOARDPARTNER UG Entwicklung elektronischer Musikinstrumente Carsten Meyer Ithweg 37 D 30851 Langenhagen info keyboardpartner de hereby declares that the product HX3 5 Mainboard has been designed...

Page 3: ...ded by plug sleeve MIDI IN 1 Accepts MIDI data from master keyboard 1 or bass pedal MIDI IN 2 Accepts MIDI data from master keyboard 2 or bass pedal 9V DC 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 Plus on inner tip BASS Separate audio output for bass pedal sound MAIN Plain Organ output as sent to external ...

Page 4: ...nic Similar to Hammond console organs drawbar volume is muted in normal position to emphasize percussion effect Muting level in normal position may be changed by menu VIBRATO UPPER toggles vibrato on upper manual on off VIBRATO LOWER toggles vibrato on lower manual on off Rotary buttons control both internal rotary simulation as well as a Leslie speaker connected to 11 pin socket simultaneously Ro...

Page 5: ...ion from 0 to full overdriven tube amp The simulated Amp will get into decent saturation on increased swell amount and higher gain values as seen on real amps Amount of distortion is controlled by swell pedal A star appears on the display if a parameter value has been changed and now differs from the stored preset To store values as preset keep the encoder knob pressed until the prompt Saved to Pr...

Page 6: ...hanged If activated the o symbol is filled white Organ Model selects basic organ model 3 1 2 Lower Manual Scroll downwards starting from the preset drawbar menu to navigate to the vibrato und drawbar settings for the lower manual Drawbars settings will be saved as voice presets for the lower manual Menu entry count depends on selected basic organ model default B3 Other organs H100 Böhm Wersi Versa...

Page 7: ...it Manual switches split mode on or off 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 u...

Page 8: ...th muted level original B3 behaviour o no foldback all way down with full level like H 100 or o no foldback all way down with muted level 3 2 3 Preamp Group and Misc Along with ToneTrimPot see above adjusts behaviour and response of the emulated AO28 preamp chassis and transformer tube saturation Swell Type controls preamp loudness behaviour on swell pedal changes o Hammond AO28 deep loudness curv...

Page 9: ...actory Reset To retrieve the factory defaults press the MenuPanel encoder knob when powering on until Factory Reset prompt appears then confirm by pressing up button Note A factory reset will void your presets 3 5 Serial Numbers and Licences HX3 is protected against forgery by licence numbers If not set appropriately after firmware update HX3 will refuse to work after 2 minutes Licences may be re ...

Page 10: ...entation regards 2nd ON as Percussion ON tab in this case 5 HX3 Apps HX3 5 Editor for Windows application is a convenient way to update or maintain your HX3 Drawbar Expander It allows for firmware and sound engine updates parameter tweaking and preset setup for experienced users Programs and complete documentation are available through our wiki pages on http wiki keyboardpartner de index php title...

Page 11: ...until Saved to Preset XX appears on the display XX representing the current preset number However Rotary Motor ON OFF and Rotary FAST ON OFF are always live and not part of a preset In which way does the live preset 0 differ from other presets Traditionally the live preset 0 is not a real preset but instead applies the current live settings of the drawbars and control switches This is also true fo...

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