HX3 mk3/mk4 additional info

New HX3 mk3 Board is equipped with stereo Leslie® simulation, secondary MIDI input and configurable mono audio output jacks.

On factory default for new HX3 mk3, menu item "Jack Config A" yields bass pedal on left (inner) audio jack, plain organ signal (like G-G on B3 AO28) on right (outer) audio jack. "Jack Config B" yields stereo Leslie® simulation on both jacks with added dry bass pedal signal. Both configurations may be changed to any combination with "AudioJ Conf A" and "AudioJ Conf B" menus (scroll down to access).

Both MIDI DIN jacks are wired by internal jumpers as MIDI inputs with merge as pictured. Please disregard lettering on HX3 MIDI expander back panel. You may use a MIDI master keyboard and a additional MIDI keyboard or MIDI drawbar controller. Original MIDI OUT configuration may be obtained by internal jumper setting. Also, MIDI phantom supply may be routed to left MIDI input by placing two additional jumpers.

Jumper wires (supplied with HX3 mk3 board) configuring left MIDI DIN jack as standard MIDI OUT.

Jumper wires configuring left MIDI DIN jack as secondary MIDI IN (wires may be replaced by jumper bridges). Phantom supply on secondary MIDI IN may be enabled by placing one jumper to two rightmost pins of PL6 and one jumper on JP13. When phantom supply jumpers are installed, DIN jack carries ground on middle pin and +5V on two otherwise unused outer pins.

Factory default for "MIDI Custom CC" set is Nord C2 organ (works also with Ocean Beach DB-1 drawbar controller); all MIDI controller assignments may be changed by HX3 Remote application (USB adaptor cable required) to any desired value.

HX3 mk3 MIDI Expander

To access internal configuration port with FTDI USB adaptor cable, please unscrew front panel and remove top lid. MenuPanel should be left connected to view messages on display.