I use the J x 4 in several discothque and show room, it is fast but the problem that is a flagrant lack of reliability in the harsh, I do not recommend at all for pro use from the same scans SERIES mx, which are enjoyable to work, but do not take the hard, I have used with the light jokey each time, and color wheels, or DCAL is gobos which misses a little while the fact that we want to, or during a blackout or some mx 4, however, not very old, had high apparent leak, or even a spring that has blown up against for a night when the place of enlighten the track, this clearly the cool walls
c is a pity when you see the price of a 4 mx, though Martin has accustomed us to better, we must review the robustness and reliability