I have connected my Sonnus directly to Yamaha clavinova.
When I am trying to switch voices on Yamaha there is no effect, its sounds like piano.
Could you please suggest what is wrong with my settings?
changing voices
Re: changing voices
The G2M transmits on MIDI Channel 1. Could you be changing the voice on another channel and that's why you don't hear any difference?
Re: changing voices
I am not familiar with the Yamaha clavinova. However, on my Yamaha keyboard changing the voice for the keyboard does not affect what voice is played in response to incoming MIDI signals. (For example, on the Yamaha, I can have an incoming MIDI signal playing one voice (or more) on the Yamaha, while the Yamaha keyboard is sending a different voice (or more) out to another MIDI device. Ah... the wonders of MIDI.)
The G2M is (probably) not sending any MIDI control messages except those related to notes and duration. Therefore, you are getting the default voice. If you can change the default voice, that might be one way to play something other than a piano voice. What I have successfully done is use my computer (with some kind of MIDI software) to send some music on MIDI channel 1 in the voice I want to the keyboard. Then I unplug the MIDI IN cable from the keyboard and plug in the G2M. This worked in my case.
You might be able to do something similar with another MIDI device as input to the keyboard. If the other device (or your computer) has MIDI THRU capability, you MIGHT be able to avoid plugging and unplugging. - Check the web.
The G2M is (probably) not sending any MIDI control messages except those related to notes and duration. Therefore, you are getting the default voice. If you can change the default voice, that might be one way to play something other than a piano voice. What I have successfully done is use my computer (with some kind of MIDI software) to send some music on MIDI channel 1 in the voice I want to the keyboard. Then I unplug the MIDI IN cable from the keyboard and plug in the G2M. This worked in my case.
You might be able to do something similar with another MIDI device as input to the keyboard. If the other device (or your computer) has MIDI THRU capability, you MIGHT be able to avoid plugging and unplugging. - Check the web.