Are BenQ projectors quiet? BenQ lists 26 to 34 dB typical, 24 to 29 eco

How loud are BenQ projectors?

Between 26 and 34 dB on the typical row and 24 to 29 on the eco row, for the 16 current US models. 4LED machines fill the bottom of the range and lamp machines the top.

Sort by the eco column and the middle reshuffles. Five models share 28, while the W4100i, X500i, TH671ST and TH575i finish highest at 29.

Which BenQ projector is the quietest?

The TK705i, the TK705STi and the GV32, each at "26dBA/24dBA". Nothing else in the US store on November 7, 2026, printed a lower figure in either mode.

The two TK705 models are close to twins: 3000 ANSI lumens, 4K, 4LED life rated 20000 hours normal and 30000 eco, two 8W speakers and Google TV. Placement is what splits them. The TK705i has a 1.0 to 1.3 throw with zoom. The TK705STi's 0.8 throw is fixed, and meant for short rooms.

The GV32 is a different machine altogether, a 500 lumen 1080p portable at 3.5 lb.

An older model, the GP520, lists 26dBA/24dBA as well, but its page offers "Check Stock" where a Buy button would normally be.

LED models run from 26 to 32 dB typical

In typical mode the LED order goes TK705i and TK705STi at 26, W2720i at 28, W4100i at 30, X500i at 31 and X3100i at 32, and the eco row for the same group spans 24 to 29. Eco reorders the bottom of that list. The X3100i falls 4 dB to 28, landing ahead of the W4100i and X500i at 29, while the W4100i drops by just 1. On noise alone, then, an X3100i owner who lives in eco mode has the quieter gaming machine of the two X models.

Among the W-series cinema models, the W2720i lists least on both rows. The W4100i is brighter, 3200 ANSI lumens against 2500, and 2 to 3 dB louder. Amazon had no new W2720i in stock on November 10, 2026, and that left the W4100i as the cinema pick.

The GV32 shares the LED light source but is ranked with the portables below.

BenQ lasers list 30 or 31 dB typical

The W5800 and W5850 list "30/27", and the TK710, TK710ST and TK710STi all list "31/28".

Those two W-series lasers are the big cinema machines. Neither has a speaker built in, the W5850 weighs 23.1 lb, and the throw runs 1.52 to 2.45 on the W5800 against 1.0 to 1.5 on the W5850. Our Amazon check found neither, so the laser pick fell to the TK710STi.

Apart from throw, the TK710 family shares a single spec table: 3200 ANSI lumens, laser life rated 20000 hours in both modes, one 5W speaker. Among lasers only the GV50 portable lists less, and it sits in the next section.

Which BenQ portable projector is the quietest?

The GV32, an LED model at "26dBA/24dBA". The laser GV50 lists "28dBA/26dBA", 2 dB more in each mode.

Power is where they part. BenQ's comparison table marks the GV32's built-in battery "N/A", and its page says it can run from a USB-C power bank of "60W or higher", with "over 90W" needed for full brightness. The GV50 has a battery inside, and BenQ says battery mode "may impact image brightness". A new GV50 showed on Amazon on November 10, 2026, only with a future ship date, so it moved to also considered. Neither page gives a separate noise figure for running on a battery or a bank.

Two older portables now show "Check Stock" instead of a Buy button: the GS50 at 29dBA/27dBA and the recalled GV31 at 28dBA/26dBA. Other brands are compared in our portable projector guide.

Lamp models sit at 33 or 34 dB

All three current BenQ lamp projectors list 33 or 34 in typical mode and 28 or 29 in eco. The TH671ST lists "33/29", the TK700 "34/28 dBA" and the TH575i "34/29".

Which is quietest turns on the mode. The TH671ST wins typical; the 4K TK700 wins eco, after a 6 dB drop from typical to eco, the largest on any current BenQ.

Lamps are not loud by rule here.

The older HT2050A lists "29/27", lower than every lamp model still in the store, and the HT2150ST short throw lists the same. Both pages now show "Check Stock".

X-series gaming models split the two modes

The short throw X500i lists "31/29" and the standard throw X3100i "32/28 dBA", so each takes one mode by 1 dB. Both are 4K 4LED projectors. The X500i is the dimmer pair member at 2200 ANSI lumens against 3300, weighs 7.9 lb, and lists "4.2 ms (1080P 240Hz)" for input lag.

A third gaming model, the LED X300G, lists "30/28". Its page shows "Check Stock", though, and our Amazon check found no listing. Short throw models from other makers are in the short throw projector guide.

How loud was the BenQ W1070?

"Audible Noise 33/30 dBA (Normal/Economic mode)", according to BenQ's US specification sheet dated March 2015. The W1070 was a 1080p lamp projector rated at 2000 ANSI lumens.

It has left the range. Its old product address on the US site returns no page, though a support and downloads page with the sheet survives.

Compare it with today's models carefully, because the 2015 row was called "Audible Noise" and used Normal and Economic modes where current tables say "Acoustic Noise (Typ./Eco.)". Read that way, the current W2720i at 28/26 dBA is 5 dB lower in the first column.

Why does a BenQ 4K projector make a high-pitched sound?

Pixel shifting. True 4K DLP uses "high speed pixel displacement", BenQ's FAQ explains, producing "a degree of vibration that may results in a slight or unnoticeable high-frequency noise".

The FAQ's "Applicable Models" include the current TK700, TK710, TK710STi, W5800 and X500i. It leaves out the TK705 pair, the W2720i and the W4100i, although the list may simply predate them. No BenQ dB figure describes this whine. The Acoustic Noise row covers the overall sound, mostly fan, and a faint tone can carry even where that number is low.

Older models BenQ no longer stocks

BenQ never marks a US projector page discontinued. Older models simply show "Check Stock" where the "Buy" button used to be, and their noise rows stay up; those cited on this page are below.

The TK700STi and the small GV10 portable print no noise row at all. BenQ's GV31 notice says its battery "may overheat and pose a fire risk".