BenQ AK800ST and AK900ST First Look: New 4K Golf Simulator Projectors

BenQ has two new 4K laser projectors built for golf simulators: the AK800ST at $3,999 and the AK900ST at $5,999. BenQ announced them on October 1, 2026 and says both go on sale later in October. Jay Lasco, host of Golf Simulator Videos, saw them at BenQ's launch event, where an AK800ST was running on a curved impact screen with the room lights on. This is a first look at what BenQ has published and where each one fits in a room. It is not a review: GSV will test both and publish a full review of each.

$3,999AK800ST price

5,000AK800ST lumens

0.69 to 0.83AK800ST throw ratio

$5,999AK900ST price

6,000AK900ST lumens

0.81 to 0.89AK900ST throw ratio, with lens shift

BenQ AK800ST vs AK900ST: the specs

SpecAK800STAK900ST

Price$3,999$5,999 Brightness5,000 ANSI lumens6,000 ANSI lumens Resolution4K UHD, 3840 x 21604K UHD, 3840 x 2160 Light sourceLaser, 20,000 hours (30,000 in Eco)Laser, 20,000 hours (30,000 in Eco) Throw ratio0.69 to 0.830.81 to 0.89 Zoom1.2x1.1x Lens shiftNone on the spec sheet. Projection offset 102.5%.Vertical 60% up or down, horizontal 23% left or right Keystone30 degrees vertical, horizontal and rotation30 degrees vertical, horizontal and rotation Input lag18.1 ms at 4K 60 Hz, 9.7 ms at 1080p 120 Hz, 4.8 ms at 1080p 240 Hz18.1 ms at 4K 60 Hz, 9.7 ms at 1080p 120 Hz, 4.8 ms at 1080p 240 Hz Picture shapes16:9 native. Also 16:10, 3:2, 4:3, 5:4 and 1:1.16:9 native. Also 16:10, 3:2, 4:3, 5:4 and 1:1. Inputs3 HDMI 2.1, 2 USB-A, LAN, RS2323 HDMI 2.1, 2 USB-A, LAN, RS232 Speaker10 W10 W speaker and woofer Size15.3 x 5.5 x 11.9 in20.5 x 6.5 x 13.8 in (521 x 166.3 x 350.6 mm) Weight13.0 lb (5.9 kg)22.5 lb (10.2 kg) Fan noise34 dB, 29 dB in Eco34 dB, 29 dB in Eco

Specs are from BenQ's specification pages for each model, read on October 3, 2026. Prices and the on-sale timing are from BenQ's announcement. None of these figures has been measured by GSV yet.

The features BenQ highlights

Auto Screen Fit 2.0. BenQ says the projector detects the shape and size of the screen, flat or curved, and fits the picture to it.

Golf Mode 2.0. BenQ's picture mode for course colors. The spec sheets also list Bright Golf and HDR Golf modes.

Screen Fill in six shapes. 16:9, 16:10, 3:2, 4:3, 5:4 and 1:1, so the picture shape can match a 4:3 or square screen.

Scene memory. Five saved display profiles, switched with one button.

Curved screens. BenQ lists corner fit and pixel mapping for screens that are not flat.

Faster modes for games. 4K runs at 60 Hz. The 120…