LED Flood's

[Birdieapple]

[FONT=&amp]Hello All,[/FONT]

[FONT=&amp]A theatre that I am involved with is currently under new management and they know that I have electrical 'skills' which I am more than happy to help them out but wanted another couple of opinions on this particular matter. [/FONT]

[FONT=&amp]The stage area that was added some 50 years after the building was built has no general lighting. It has 3 5ft fluorescent lights that are low wattage for when there is a show so not to bleed onto stage during a black out but still allow people to walk around etc. That's fine for during show but when we are rigging the gear on lighting bars that are 5-6m above stage level then there is no light and is difficult to see what you are doing. [/FONT]

[FONT=&amp]So the solution that a couple of us have come up with is to mount 6 led flood's around the 3 walls on the stage.[/FONT]

[FONT=&amp]Approximate stage dimensions (in meter's) are 14 wide. 10 deep. and 20 to peak of apex ceiling. 15 to edge of ceiling/top of walls on left and right. [/FONT]

[FONT=&amp]The walls are painted in black from floor level to 10m then original 'cream' to top of wall and ceiling. [/FONT]

[FONT=&amp]Now the plan was to mount 2 led floods on each wall facing vertically to the top of the stage, with the hope that the light will 'bounce' off and illuminate the rest of the stage. We decided against mounting them directly above as the led chip would be too blinding looking into it whilst up the ladder! [/FONT]

[FONT=&amp]So with the ideal amount of 6 floods, what would people think the best wattage is, 20,30 or 50's?[/FONT]

[FONT=&amp]For now they will be installed with flex and run to plug tops for a temporary solution until I can find where the conduit run is for the existing 'show' lights and tap a P+N from there![/FONT]

[FONT=&amp]Thanks In Advance![/FONT]

[FONT=&amp]Sam[/FONT]

 

[Pete999]

Get some 110v construction lights and plug em in via a TX of course

 

[Birdieapple]

Pete,

not a viable option to have cables traipsing round everywhere also needs to be safe when 'users' of the space are around. No hot lamps to touch etc. also power consumption.

Cheers,
Sam

 

[Pete999]

Pete,

not a viable option to have cables traipsing round everywhere also needs to be safe when 'users' of the space are around. No hot lamps to touch etc. also power consumption.

Cheers,
Sam

Right OK sorry

 

[Richard Burns]

I would have thought that one 50W frosted floodlight centrally placed at the roof apex pointing down should be enough light to light a 10x14m area 14m away.
Other wise if using reflected light from a cream wall/ceiling then 3 30W floods placed above the working plane in a central group each one pointing at a different wall and angled toward the roof wall junction should be OK. If they must be wall mounted then positioning them higher up and angled horizontally at the opposite wall so the light cone reaches say half the working plane and not in line with access ladders facing that way might be a solution.

However this is just an impression I have and this is all dependent on level of illumination required and the structural design of the building, obstructions, shadows etc.

Apart from doing some complex lighting calculations it may be easiest to get a 30W floodlight and shine it around and see how much more you need.

 

[Birdieapple]

I would have thought that one 50W frosted floodlight centrally placed at the roof apex pointing down should be enough light to light a 10x14m area 14m away.
Other wise if using reflected light from a cream wall/ceiling then 3 30W floods placed above the working plane in a central group each one pointing at a different wall and angled toward the roof wall junction should be OK. If they must be wall mounted then positioning them higher up and angled horizontally at the opposite wall so the light cone reaches say half the working plane and not in line with access ladders facing that way might be a solution.

However this is just an impression I have and this is all dependent on level of illumination required and the structural design of the building, obstructions, shadows etc.

Apart from doing some complex lighting calculations it may be easiest to get a 30W floodlight and shine it around and see how much more you need.

Cheers Richard,

mounting to the apex of the ceiling wouldn't prove too effective due to the number of steel ropes that are supporting lighting bars, curtain tabs and existing cable routes crossing over in numerous places. That is something we hadn't considered (mounting higher up and facing horizontally)

Will definitely buy a 30w and wave it around to see what it's like!

Cheers,
Sam

 

[davesparks]

Have you tried looking at other theatres to see how they do working light?
Most places have either lights at high level above the stage/underside of the fly-floor, or they are mounted on the LX bars just like any other light and patched to a non-dim channel


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