Hello there,
Could you please someone give me the patch list of the sound
'Canon Gun' of JV-1000 or give me the hint and tips for making
the sound?
I will play it for the '1812' symphony in the concert of the amature orchestra. I need to make the sound on my JV-1000.
I appreciate your cooperation...

I don't know the patch you are speaking of but you can play around with a timpani (or kick), transposing and filtering it. If all else fails, use noise.

If you have a General Midi bank, you might want to check out the Gunshot patch #128 and experiment playing it at different frequencies up and down your keyboard.