Slang for a large ERS having a step lens 8"-12" in diameter and using a 1000W-3000W T30 incandescent lamp. The large and high wattage lamp necessitated a huge reflector, thus a large housing.
t-61
By today's standards, horribly inefficient in all aspects, even when compared to a 360Q-6x22.

t-61
By today's standards, horribly inefficient in all aspects, even when compared to a 360Q-6x22.
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