XB2-Kit mk3 User Manual

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HX3 Retrofit Kit for Hammond XB-2

Buttons below XB2 keybed achieve new functions in EDIT mode.
Display shows preset number and drawbar registrations as well as EDIT functions. Arrow indicates active manual for editing/preset selection.
Left potentiometer below keybed acts as Rotary Amp Volume for internal Leslie(R) simulation.

Usage of a HX3-equipped XB-2 differs somewhat from original since HX3 offers some more options also found on B3. Additional B3 functions are available in EDIT mode. The XB-2 display shows preset number, drawbar registrations and briefly selected percussion and vibrato settings. An arrow shows manual selected by SOLO button.

Main Tabs

Drawbars and large panel buttons act as before, but SOLO button toggles between upper and lower manual. If lit up, upper manual is selected; otherwise, drawbars and vibrato button affect lower manual (or section below split point).

  • SOLO button toggles between upper and lower manual for drawbars and vibrato tabs as well as presets.
  • PERCUSSION SECOND and THIRD activate percussion; only one may be active the same time
  • VIBRATO ON activates scanner vibrato of HX3. Power-on default is chorus-vibrato C3. Use EDIT mode function buttons to access other vibrato/chorus depths.
  • LESLIE FAST toggles between slow and fast Leslie speed (external if present as well as internal simulation).

Fuctions and Presets

Buttons below XB-2 keybed got new functions:

  • RECORD toggles Leslie between RUN and STOP
  • EDIT toggles EDIT mode on and off. LED indicates EDIT mode active
  • CANCEL sets presets off (i.e. "Preset 0") and selects "live" mode
  • PRESETS select one of 8 presets. HX3 Retrofit Kit yields 8 presets plus "live" setting (CANCEL) for each manual. If SOLO button is lit, preset buttons select upper manual, otherwise lower manual presets.

Press and hold any preset button for 2 seconds to save the new or changed registration. A message appears on the display indicating the saved target number. You may even save tab registration on "live" preset "CANCEL", but not the drawbar setting. All presets may be changed "on the fly" by using drawbars and vibrato/percussion/function buttons.

Edit Mode

In EDIT mode (button LED lit up) cancel and preset buttons act as additional registration tabs:

  • CANCEL (MIDI CHANNEL) (D) steps through MIDI base channel 1..10 for upper manual. Lower manual is on base channel +1, pedals on base channel +2.
  • PRESET 1 (MIDI CC SET) (D) selects one of five different MIDI-CC interpreters
  • PRESET 2 (SOFT/NRM) (P) toggles percussion SOFT or NORMAL
  • PRESET 3 (SLOW/FAST) (P) toggles percussion SLOW or FAST
  • PRESET 4 (VIBRATO) (P) steps through vibrato setting V1 to C3
  • PRESET 5 (EXTERN LESLIE) (D) toggles internal Leslie simulation ON/OFF. Switch to OFF if you use an external Leslie or an external rotary simulator.
  • PRESET 6 (KEY SPLIT) (D) activates or suspends manual split (lower to upper) to note "#F"
  • PRESET 7 (REVERB 0-3) (D) steps through reverb 0 (off), 1, 2 and 3
  • PRESET 8 (LEAKAGE 0-3) (D) steps through generator leakage 0 (brand new organ) to 3 (sleazy organ)

Selected function will be shown in display. Those marked with (D) will be saved to power-on defaults if it's function button is pressed for more than 2 seconds. Those marked (P) will be saved to current preset when preset is saved.

Potentiometers

Left pot ("Reverb") below keybed becomes the Leslie Amp simulation volume control. It also affects the 11-pin Leslie volume as the external Leslie output signal is derived inernally from 122 tube amp simulation. Right pot controls overall output volume for audio jacks as well as headphone.

Output Jacks

Since guts of XB-2 have been discarded, some of the output and control jacks differ from original XB-2. From left to right, seen from back:

  • HEADPHONE output carries stereo Leslie simulation (default) or plain organ signal, depending on EXTERN LESLIE setting. Adjust volume by "Main Volume" pot.
  • RIGHT output carries right channel of stereo Leslie simulation (default) or bass pedal signal, depending on EXTERN LESLIE setting.
  • LEFT output carries left channel of stereo Leslie simulation (default) or plain organ signal from 122 Amp simulation, depending on EXTERN LESLIE setting.
  • SWELL FC-7 connects to swell pedal. Use expression pedal compatible to Yamaha FC-7. If no expression pedal connected, full volume is achieved. Connection of old Hammond swell pedal is not possible!
  • DUAL FOOT SW connects to dual foot switch (preferred) for Leslie RUN/STOP and FAST/SLOW. If single foot switch connected, it only controls FAST/SLOW.

Please note: Old MIDI THRU and FOOT SWITCH jacks have no function, do not connect. CONTRAST pot acts as before for display adjustment.

An external 11-pin Leslie may be connected to 11-pin jack. It receives bass and rotary signals on separate channels. As Leslie output gets its signal from internal 122 Amp simulation, even transistor Leslies yield perfect results with overdrive capability. External Leslie volume may be adjusted by internal trim pots on output jack board (see installation manual) if volume is too low.