We have RGBW and RGBA and 3000K in our rental inventory. Also I have has a chance to light a concert with them. I found that the RGBW worked out fine for a front light but the RGBA did not. RGBA fine for
BAX and side light but for a front light they just didn't have enough
continuity of spectrum or a good enough white. The 3000K worked very well for a
FOH unit.
Oh yes, when I was trying to decide which brand to
purchase (
ETC or
Altman), I asked whether we would be able to re-chip the
LED array. When I asked the same thing of
ETC, they said - no. Since then,
ETC has brought out a new
fixture with fewer colors of emitters so the question of re-chipping would seem to be
mute but I am still curious when will happen when/id
Altman comes out with a brighter
array with the same electronic requirements. I'm looking forward to trying this in the future.