lazlokovacs wrote:Ha! I was actually wondering the same thing yesterday! I would like to have one extra octave down, just like up, press the down twice 'till it blinks, one octave lower. Would that just be a firmware mod?
As far as I know, no.
You only have six bits available for the notes. They are output on 6 pins from the microcontroller. Currently the notes 0x0(rest) and 0x0B through 0x3F are used and output. There is a note in the firmware code that the lowest notes(up to 0x0A) are not in use because they produce the same tone from the synthesizer engine.
In the firmware a note is stored as an 8-bit number, two bits are used for slide+accent and the rest for notes. You need to rewrite lots of stuff to have more available notes.
So, you would really need to build a new synth with new firmware to achieve this.