Projector makers publish more noise data than most of the appliance brands we cover. Nearly every model here carries a fan noise figure in the maker's own specification table, and most carry two: one for normal running and one for an eco or quiet mode. After a month of chasing dishwasher brands for a single number, this is a relief.
We read the specification pages and PDFs for twenty projectors from ten brands, covering standard throw, ultra short throw and portable models, laser, LED and lamp. The published figures run from 22 dB to 40.5 dB. Here is what they do and do not tell you.
Our 7 picks are listed above, with full specifications for each.
Almost every number in this category is a bare decibel figure with no measuring distance, no room description and no test standard. XGIMI is the single exception: it publishes <28dB@1m, and it is the only maker here that says where the microphone was.
That matters more than it sounds. A figure taken at one metre and a figure taken at three metres describe the same machine very differently, and without the distance you cannot line two brands up. For the wider problem, see why you cannot compare dB ratings across brands.
The second gap is the mode. Epson's LS12000 publishes "22 - 30 dB" and never says which mode gives you 22. Optoma publishes a minimum and a maximum, which at least brackets the worst case, but does not tell you what you have to give up to reach the minimum.
The quiet mode is where the decibels actually are
The best evidence in this category comes from makers who publish two figures for one projector.
Epson's LS800 publishes "Quiet Mode: 23 dB, Normal Mode: 32 dB". That is a 9 dB gap on one machine, which is a much bigger difference than the gap between most of the models in this guide. LG goes further and publishes three figures tied to three named power settings: 26dB(A) in Eco, 28dB(A) in Medium and 30dB(A) in Bright.
So the mode you choose usually matters more than the model you buy. The catch is that no maker publishes what the quiet mode costs. Epson does not say how many lumens you lose going from Normal to Quiet, and neither does anyone else. You will find out in your own room.
Lamp projectors are not reliably louder
This one surprised us. The usual assumption is that a lamp projector needs more cooling and therefore makes more noise. BenQ's own catalog says otherwise: the lamp based HT2050A publishes 29/27 dB, while BenQ's 4LED HT2060 publishes 33/28 dBA and the 4LED HT4550i publishes 32/28.
Laser and LED models still win on light source life. A laser rated for 20,000 to 30,000 hours against a lamp rated for 3,500 hours in normal mode is not a close contest, and a lamp is a consumable you will replace. But if noise is your first concern, do not rule out a lamp model on principle. Check the number.
A warm room makes a projector louder
Hisense is the only maker here that publishes this, and the figures are striking. Its L9Q sheet ties audible noise to ambient temperature: 29.5 dB at 26 degrees C, 31.5 dB at 29, 35.5 dB at 32 and 40.5 dB at 35.
That is an 11 dB spread from one projector in one mode, caused by nothing but the room warming up. Every other maker in this guide publishes a single figure with no temperature attached, and there is no reason to think their projectors behave differently. If your room runs warm, treat any published figure as a best case.
Where the numbers stop
Three makers in this set publish nothing we could use. ViewSonic offers a "Silence Mode" on the X2-4K with no figure attached to it. Samsung publishes a figure for the cheaper Premiere 5, where the page reads "less than 2 8dB" with a stray space, but publishes no figure at all for the flagship Premiere 9. Valerion publishes decibel figures for screen gain, which is a different use of the word.
We also could not read Sony's figures. Six Sony domains refused our requests, and a browser attempt landed on a country gate with no product content. That is an access failure on our side, not evidence that Sony publishes nothing, and we have left Sony out of the table rather than guess.
One note on our LG figures: LG's US site blocks us, so the HU915QB and PU700R numbers come from LG's own Canadian site for the same model numbers. The specification blocks match LG's global format, but you should know where we read them.
We did not measure any of these projectors. Every figure here is the maker's own, quoted as published, with the condition attached wherever the maker attached one.
