BenQ
LK830ST
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Prices confirmed Nov 10, 2026 · we check every retailer daily
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BenQ's 4K laser short throw: 4,000 ANSI lumens, a fixed 0.496 lens (a 100-inch image from about 3.6 ft, per BenQ's manual), a 114% offset, and a laser rated 20,000 hours in normal mode and 30,000 in eco. BenQ sells it through its US golf-simulator site. We passed on it in September and again in October because Optoma's ZK431ST-B matches its throw and offset with 4,100 lumens (ISO 21118, a different standard from BenQ's ANSI rating) for $1,799, and the GT3900UHD does much the same for $1,499. Otherwise the three are close: each rates its laser at 30,000 hours in eco mode and has a golf picture mode, and BenQ lists input lag of 16.7 ms at 4K/60Hz and 4.2 ms at 1080p/240Hz. The Optomas cost less for the same job; the LK830ST is for someone who prefers BenQ.
Sold as one
Packages with the BenQ LK830ST
Retailers sell the BenQ LK830ST with a launch monitor and the rest of a setup, at one price. The three we’d look at first, one per launch monitor, and why; each price is the configuration shown, in stock.
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Indoor Golf Outlet · Enclosure and projector · SIG DIY
Voice Caddie SC4 PRO
Voice Caddie SC4 PRO, Shop Indoor Golf DIY Enclosure Kit (10'4" x 7'11"), BenQ LK830ST
Every part is one we list, and it costs $9 more than the same parts bought separately.
Indoor Golf Outlet · Enclosure and projector · SIG DIY
FlightScope Mevo Gen 2
FlightScope Mevo Gen 2, Shop Indoor Golf DIY Enclosure Kit (10'4" x 7'11"), BenQ LK830ST
Every part is one we list, and it costs $50 less than the same parts bought separately.
Indoor Golf Outlet · Enclosure and projector · SIG DIY
Foresight Sports GC2
Foresight Sports GC2, Shop Indoor Golf DIY Enclosure Kit (10'4" x 7'11"), BenQ LK830ST
Every part is one we list, and it costs $50 less than the same parts bought separately.
Compare with
How it stacks up against the closest alternatives.
Who this is for
Honest match per persona.
Good for
No specific match.
Not for
- Cost-Effective Buyer
The GT3900UHD and ZK431ST-B are 4K on the same throw for less.
- Showroom
4,000 lumens is mid-tier brightness for a premium room.
Specifications
The numbers, plainly stated.
Image
| Resolution | 4K UHD (3840×2160) |
| Lumens | 4,000 ANSI |
| Picture Mode | Golf picture mode |
Hardware
| Light Source | Laser (20,000 hours normal, 30,000 eco) |
| Throw Ratio | 0.496:1 (fixed) |
| Offset | 114%; no lens shift |
| Dimensions | 10.99 × 9.03 × 4.74 in (W × D × H) |
Requirements
| Throw Distance | 100 in at about 3.6 ft (BenQ's manual) |
Performance
| Input Lag | 16.7 ms at 4K/60Hz; 8.3 ms at 1080p/120Hz; 4.2 ms at 1080p/240Hz (BenQ) |
Room planner
See the BenQ LK830ST in your sim room.
The planner draws it to scale with your room and your screen: where it mounts, how far the lens sits from the screen, and whether your swing or your shadow crosses the light. It opens in a sample room; put in yours.
Same category, different tradeoff
Other projectors we considered.
Mid-tierBenQLH860ST1080p laser short throw at 5,000 ANSI lumens and a 0.5 throw: brighter than the 4K units at this throw, but 1080p.
PremiumOptomaZK521ST-B4K at 5,000 lumens (ISO 21118) with vertical lens shift, for well under the ProBeam and the LK936ST.
Mid-tierBenQAH700STGolf-dedicated 1080p laser with Auto Screen Fit and Golf Mode. The smart mid pick when 4K isn't on the table.
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