I want to tie together my newly aquired Vetta-

anyway, tie the vetta to my flextone III, both are 2x12 combos, and place them on separate sides of the room and control them using midi connections. I hope to have the Vetta use the flextone as a sort of slave. the sounds in this amp are unreal. My question is this,
What is the longest run you can make with a midi cable before you experience voltage drop to the point that it would interfere with the midi communications between the amps? I need 40- 50 feet, and am using the two shielded pair for the prewire. 22 guage.
thanx
D