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KEYBOARDPARTNER UG
HX3 Drawbar Expander Version 4.25
Features
 Compact organ emulator with two sets of 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 separate 122 amp output
 Dual MIDI IN for 2 separate keyboards or bass pedal
 MIDI OUT sends NI B4® compatible control codes
 LED buttons show vibrato and percussion setting
 LCD display and menu system with 2x16 presets and parameter tuning
 Swell (expression) pedal and footswitch jacks
 Separate outputs for amp and rotary simulation as well as plain organ
 Connector for 11-pin Leslie® Speakers
 USB for firmware updates and parameter editor
 Built-in reverb DSP with 3 levels
 Hand-crafted in Germany
Default MIDI setting is channels 1/2/3 for upper/lower/bass, MIDI CC NI B4 with
Sustain on CC #64.
DC input 9 to 12V, 500 mA min., 5.5/2.1 mm plug, plus on center.
Trademarks Hammond®, B3® and Leslie® belong to Hammond Suzuki Corporation (Japan).
Trademark NI B4 belongs to Native Intrumens 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 Drawbar Expander is a tonewheel
organ emulation in a compact box – an
organ just without the keys. 32 drawbar
presets, many parameters tweakable by
simple menus – like key contact flex and
damping for key click response, more or
less percussion punch etc. And, of
course, it yields the legendary
unmatched HX3 sound.

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Summary of Contents for KEYBOARDPARTNER HX3 Drawbar Expander

  • Page 1 Trademarks Hammond®, B3® and Leslie® belong to Hammond Suzuki Corporation (Japan). Trademark NI B4 belongs to Native Intrumens 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.
  • Page 2: Eu Conformity Declaration

    Only use appropriate power supply as advised. Input voltages exceeding 15V may damage the device. Designed for indoor use only. Do not use HX3 Drawbar Expander in moist places. Do not spill liquids or solvents into unit. No user-serviceable parts inside. Refer to qualified technician or service representative if problems occur.
  • Page 3 1.0 Jack Connections HX3 Drawbar Expander connectors on back panel, left to right:  SWELL PEDAL ¼” stereo jack. Expression pedal input is compatible with Yamaha FC-7 and similar expression pedals (direct connection preferred for speed/accuracy, but may also be remote controlled by MIDI control change, controller 11).
  • Page 4: Panel Buttons

    2. Panel Buttons 2.1 Tab 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: ...
  • Page 5 2.2 Effect/Configuration Buttons Additionally, HX3 drawbar expander has buttons to control reverb, output configuration and manual split.  REVERB I and REVERB II select 3 different reverb settings and reverb off. Press I and II simultaneously to select reverb III.
  • Page 6: Menu Panel

    3.0 Menu Panel The Menu Panel knob Data Entry (incremental encoder) will change drawbar preset numbers from 0 to 15, parameters in other menu entries or rotary TubeAmp Gain, depending on menu mode. On power on, the presets/drawbar menu is present. Press knob briefly to switch to Rotary Tube Amp Gain control and back.
  • Page 7 3.2 Defaults Group Step downwards to reach lower manual settings; change to desired value by turning incremental encoder knob. Save changes to current preset by pressing knob for more than 2 seconds. On “live” drawbar preset 0 (DrbL) any changes are always saved temporarily and restored when returning from preset to “live”...
  • Page 8 3.2.2 Output Configuration HX3 generates five output signals: rotary stereo simulation left/right, plain organ, bass pedal, and organ with rotary tube amp simulation. All output signals may be routed to any output jack. Two configurations are available, so you may set these for your own needs and toggle between them simply by "Audio Jacks"...
  • Page 9 3.2.3 Commons Group  Transpose all manuals and pedal from -6 to +7 semitones. Notes beyond 5 octave limits of console organ will not produce any sound due to accuracy of physical model.  MIDI Channel sets MIDI base receive channel 1 to 10 (upper manual, lower manual is on +1, pedals on +2).
  • Page 10 3.2.4 Vibrato Group Detailed modelling of scanner vibrato yields lots of adjustable parameters. Avoid to randomly change parameters as they are intended for real organ enthusiasts – you should know what you’re doing.  Scanner Gears adjusts scanner drive gearing and therefore vibrato frequency.
  • Page 11 3.2.6 Generator Group  TG Gears Tune sets organ generator tuning in range from A = 433 through 447 Hz  TG Flutter adjusts tone generator "sloppyness" (spring clutch tension, bearing precision).  TG Leakage sets tone generator leakage to o 'OFF' (never seen that) o 'New Organ' (recapped/new generator), o 'Old Organ' (higher leakage on several notes) or...
  • Page 12 HX3 will refuse to word after 2 minutes. Licences may be re- installed at any time. Please contact KeyboardPartner to obtain a valid licence key. We need your serial number (issued on startup and by HX3 Remote application) to...
  • Page 13: Midi Control

    3 to bass pedals) as well as various MIDI CCs with selectable compatibility sets. MIDI dynamics slightly influences key click noise. SysEx data is always ignored. HX3 drawbar expander has 2 independent MIDI inputs for connection of two master keyboards or keyboard and bass pedal. MIDI OUT on Extension board (optional) transmits all MIDI CC controller data according to NI B4 standard, independent of selected MIDI receive CC set.
  • Page 14 5. HX3 Apps HX3 Remote 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. HX3 Update for Windows application is a "one click solution" to update your HX3 mk2/mk3/mk4 board or expander.

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