Gets trickier then you would think! Take for instance:
Elation Professional - Professional Lighting Products
Max 2400 watts, 10 amps per channel. So, that would mean 1200 watts per channel, right? NO!
They don't say 1200 watts, just the electrical limit of 10 amps. In practice, you are best off limiting the load to 600 watts per channel.
The control devices in the pack do not have enough headroom to reliably handle the inrush of a 1000 watt lamp. (First hand experience.)
Because the throw distance is relatively short (20 to 24 feet) I believe we can use 575W bulbs. The hope is to start with only six fixtures, but want to have the flexibility to expand to a total of eight if needed in the future. If I understand your response correctly, it appears the Elation pack will allow for this.
Our stage is 30 feet wide and only 12 feet deep. I will also be using LED fixtures on the back wall, so I need to keep the S4 light off that surface. Am considering 19 or 26 degree fixtures. Will six fixtures be enough to provide front stage lighting?
The Elation packs may or may not allow 4x575W. It depends on the power source for the packs themselves. Most wall outlets can't provide 2150W. Check with someone who knows the space what your power options are. If you want to use a lot of medium to high powered fixtures, and the budget allows for it, look at a dimmer pack that has a larger power input, either by using dual Edison inputs, or by using a higher amperage/voltage NEMA connector. I use the 4 channel, dual input, twistloc version of these: Leprecon® | Products - Dimmers - ULD340/360, 4 & 6 ch 1800/3600Watt dimmer pack to power 4x 750W S4s with no issues.
As for your 19 vs 26 degree question, which barrel you use is determined by how many zones you want, and how many colors you want. I'd recommend looking at ETC's datasheets for the Source 4 and Source 4 Jr and looking at the various beam diameters at your throw distance. With that shallow a stage, its going to be a challenge to illuminate faces and keep the beams off the back wall.
Because the throw distance is relatively short (20 to 24 feet) I believe we can use 575W bulbs. The hope is to start with only six fixtures, but want to have the flexibility to expand to a total of eight if needed in the future. If I understand your response correctly, it appears the Elation pack will allow for this.
Our stage is 30 feet wide and only 12 feet deep. I will also be using LED fixtures on the back wall, so I need to keep the S4 light off that surface. Am considering 19 or 26 degree fixtures. Will six fixtures be enough to provide front stage lighting?
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