In my testing room, I fully expected the Pro L1755UNL to be extremely noisy. Of course, this is a 15,000 lumen large venue projector, and which had no business being in a 350 sq. foot room and projecting onto a 120″ screen. Normally a unit like this would be in a 18,000 sq. ft room projecting on to a 250” or 300” screen.
I was surprised that the Pro L1755UNL was barely louder than a typical home theater projector. Even in my small room, no one had to shout, or even significantly raise their voice to talk over it.
On paper Epson quotes the Pro L1755UNL’s noise level at 40 db at full power and 30 in Quiet mode. For a reference, Epson’s popular 2400 lumen 5040UB home theater projector is only 2db (almost indistinguishably) quieter at full power. When compared to Sony’s FHZ65 which another commercial laser projector that we recently reviewed, the Pro L1755UNL was only 2db louder (in Quiet mode) while outputting nearly 3 times the brightness.
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