I got a 30 note pedalboard (with a 5-pin midi connector) that I want to use with my two keyboards (Yamaha P-155 and Kaway CA13) to play simultaneously on all three. The problem is that when I connect the pedalboard either to the Yamaha or to the Kaway, I only get the piano sound from the pedal notes, even when on the manual I can play a different instrument. Also, the sound from the pedals is a bit louder than that from the manual (that the pedalboard is connected to) and I barely can hear the notes played with hands because the bass is too loud. I would like to:

  1. be able to change the instrument of the pedalboard to be different from the sound of the manual board of the keyboard that the pedalboard is connected to,
  2. and, if possible, tone down the sound of the pedal notes so that they don't stand out against the manual notes.

The user guides for the keyboards are here:

Even though I have the guides, I don't seem to be able to get my head around this problem.

  • You gave us the details on the keyboards but what we need even more is the details on the pedalboard. What is it? (Make and model) Dec 21, 2020 at 23:47
  • Thank you for your response (and edit). The pedalboard is made by someone, not a standard vendor, hence there is no make or model as such. Inside the keyboard, on the PCB I can see two main chips PIC16C84 and 74LS138. The rest is just a voltage regulator, a diode and some LRC components.
    – Jelonek
    Dec 22, 2020 at 0:06
  • Actually, after some searching in my "paperwork" I found both the make (F.H.U. Muz-Or) and the model (S-30 Note Student): muz-or.eu/kawiatura-nozna-s-30-note-studencka-wersja-p-10.html When connected via a midi box to the PC equipped with a programm like Hauptwerk all the three keyboards work fine controlling the respective virtual keyboards. However, I would like to just connect the pedal to either the Yamaha or the Kawai, without the PC.
    – Jelonek
    Dec 22, 2020 at 0:36
  • Further on, I found a sort of "manual" that is very.. nascent. I don't know how to upload a document here but the main idea of this manual boils down to the following: Controlling: Press the function button F (on the device) and then one of the keys of the first octave: E.g. to change the channel from 1 to 2 (ch.1 is set as default), press the function button F and then C# of the lowest octave (midi channel+1). The keyboard will from now on play on channel 2.
    – Jelonek
    Dec 22, 2020 at 0:42
  • Not an answer, hence a comment. I use an Alesis Nanobass connected via MIDI to the pedals. That gives way more choice on bass sounds, with totally separate volume control. Obviously it needs a separate amp, but a cheap practice amp would do the trick.
    – Tim
    Dec 22, 2020 at 10:19


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