I definitely agree with the suggestion that the dj may be your best resource for the dj style 'fancy stuff'... even if he is the semi-retired-sold-all-his-gear sort... he may know where to get it and probably knows how to set it up. And you may find that hiring a second DJ who does have all the equipment and letting them work together is STILL cheaper than renting the equipment alone from a lighting shop.
The S-4s you mentioned are probably perfectly fine to light a
stage, and for ballroom-meeting sorts of things leaving them plugged into the wall is probably just fine. A 575watt lamp pulls aproximately 5 amps so for
safety's sake, you probably need to split your 4 instruments onto two separate circuits (different breakers) as I wouldn't want to run one
circuit so close to capacity, especially all day in a
meeting room... You also MIGHT be able to find some lower wattage fixtures that would adequately light the
stage... and you definitely should talk to the hotel staff when you can, as sometimes, though not as often as we'd like, the in room lighting is can be quite adequate. There may be spots or
track lighting installed to light a
stage nicely, assuming you put the
stage in the right spot in the room. If your friends insist that the
stage has to be in an odd spot and not where the hotel has lighting preinstalled for it, then you're back to setting it up from scratch.
When you're sure of what you need to accomplish,
call the local rental shops, do a little talking until you get through to someone who actually knows something about the equipment, and tell them what you're trying to do. For example, you could say "I've got an event on this date, that lasts for three days, and has to set up by this time. I'll pick everything up at your warehouse the day before (or I need it delivered at this time... or whatever arrangements you need to make.) I want to put 4 source-fours (specify
beam angle) on two trees, and they're going to be X feet from the
stage. All the cables are going to have to run to (wherever) so I need at least 2 cables of X length, with triple taps to
plug two lights into each. I need to dim them, so I need a 4 pack and the smallest controller you've got...
The shop will tell you what they have and what things cost, and if you're lucky they'll tell you if you've forgotten anything.... for example... they still need to know if I need
power cables to reach the
dimmer pack... and they need to know how much cable I need to get from the controller to the
dimmer pack.... you SHOULD specify that, but they SHOULD ask if you don't... some shops will, others won't. Go ahead and ask the shops about DJ type stuff... just tell them that you're looking for a few DJ type effects lights that will run on their own and respond to music, and that you don't want to spend much money on them as they're really a gimick... they might have something, or know someone who does. If you tell the shop what you're trying to do, a good shop will help you out. Now... you also need to learn the difference between 'helping you out' and 'upselling your pants off...' But that's another conversation... just be careful and if you don't understand why they say you need some expensive thing, ask them to explain it. If they don't have a good explanation for why you need something that they want you to pay for, you may need to
call another shop... there are honest people and crooks in every business.
Hook it all up in your head, and then draw the whole
system out on paper... it seems silly to do this for something this simple, but it'll help you catch mistakes. Ask yourself about each piece of gear "Where does this go? What does it physically attach to? How? What does it electrically attach to? How long does that cable need to be?"
After the phone
call to talk about what you need and what they have, you still really need to
send them a proper
shop order. Look at:
John's Pearls
to see John McKernon's suggestions on what goes into a proper
shop order. His formula seems like overkill at first, but it's all based on things that have gone wrong for someone in the past so I recommend heeding his advice diligently. CYA, as always.
Anyway. Hope all that helps a little! Shout if you have more questions.
Art Whaley
Art Whaley Design