We don’t use them for theatre productions because the angles of the beam are not adjustable, and the cost of the bulb can be greater than the box it’s in. Plus they tend to project a beam that is not even, greater light can be seen in the centre, and sometimes the bulb filament is projected on to the stage as a brighter line, but for a band they are just fine!
LEDs. Every knows that LEDs are solid state lights, LED stands for Light Emitting Diode. But not many people know that LEDs have the same efficiency as a good old florescent tube!
LEDs are best for a band in a very small Pub or Club!
The things people don’t always know about LEDs or PAR Cans!
For example. A band that plugs in using a single thirteen amp plug would get enough power to run the speakers and mixer etc. plus a few LED lights, if the LED Cans are situated next to the band. Any further away then the band would require lighting that could produce a beam of light that could be thrown over a distance of greater than five feet!
PAR Cans. Par lamps were developed for the aircraft industry as aircraft lights. They are sealed beam lights, just like an old fashioned round car head lamp with the bulb and reflector all in one unit. The first use of these types of lamps was in the late nineteen seventies when these bulbs were first available in 110 volt only. Strand Electric penned one of the first designs that looked like a tin box – hence the phrase ‘Can’
Mainly used for bands or at larger venues as dozens can be used together to gain even lighting at the lowest cost of bulb and box.
We don't use them for Theatre! - Strange? - But No! - We have our reasons!