I got the NovaMatrix marquee light from Groovy Game Gear and have it installed in my cab.
Now, my cab is small (about 3/4 the size of a Galaga machine) and the marquee is only about 17x6 inches.  For my size cab, I think the marquee is a bit bright.  I could remove an LED or two, but I already have them installed, and I like the coverage.  I'm powering the light with a wall wart that can be switched from 3v to 12v.  I switched the voltage to 9v and I think the marquee looks great.
Does anyone know if operating the NovaMatrix on 9v instead of 12v will shorten the life of the LEDs?  I know some electronic devices respond adversely when operated at power levels below what they were designed for.
Thanks.