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AK900ST

Released 2026

ShowroomProjector

BenQ

AK900ST

$5,999

BenQ's brightest golf projector, announced October 1, 2026: 6,000 ANSI lumens of 4K UHD from an IP5X-sealed laser rated 20,000 hours (30,000 in Eco). It keeps the LK936ST's 0.81–0.89 throw and its lens shift — ±60% vertical, ±23% horizontal — and adds the golf features the LK936ST never had: Golf Mode 2.0, Auto Screen Fit 2.0 for flat and curved screens, motorized zoom, autofocus and saved scene profiles. BenQ lists input lag at 18.1 ms at 4K/60 and 4.8 ms at 1080p/240. That makes it the natural successor for a showroom room built around the LK936ST, which BenQ US lists as out of stock. The trade is price: $5,999, against $4,899 for the LK936ST's remaining stock and $3,999 for the AK800ST, which drops the lens shift and 1,000 lumens. The lens shift is what you are paying for if the projector cannot sit square to the screen.

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Who this is for

Honest match per persona.

Good for

  • Showroom

    6,000 lumens with lens shift and BenQ's golf features, in the throw the LK936ST used. For a premium room with windows or a large screen, this is BenQ's current top answer.

  • Performance Seeker

    Bright enough for data review with the lights on, 18 ms of lag at 4K, and Auto Screen Fit to keep the image square on the screen without a calibration session.

Not for

  • Cost-Effective Buyer

    $5,999 for a projector. The GT2400HDR at $1,299 handles a light-controlled room.

  • Recreational Player

    Far more light and money than a casual room needs; the TK710STi does 4K laser for $1,999.

  • Space-Constrained

    A 0.81–0.89 throw needs depth. A tight room is better served by an ultra-short throw like the ZK431ST-B.

  • Family Setup

    A shared room gets most of the same picture and the golf features from the AK700ST at $2,899.

Specifications

The numbers, plainly stated.

Image

Resolution4K UHD (3840×2160)
Lumens6,000 ANSI
Color97% Rec. 709; Golf, Bright Golf and HDR Golf picture modes

Hardware

Light SourceLaser, IP5X sealed (20,000 hours; 30,000 Eco)
Throw Ratio0.81–0.89 (1.1× motorized zoom)
Lens ShiftV ±60% / H ±23%
Fan Noise34/29 dB (normal/eco, BenQ spec)
Weight10.2 kg (22.5 lb)

Performance

Input Lag18.1 ms at 4K/60Hz; 4.8 ms at 1080p/240Hz

Software

Golf FeaturesGolf Mode 2.0, Auto Screen Fit 2.0 (flat and curved screens), autofocus, Golf Scene Memory (5 profiles)

Same category, different tradeoff

Other projectors we considered.

Cross-shop

Side-by-side comparisons with the AK900ST.