BenQ LK830ST 4000lms 4K Laser Simulation Projector
True 4K UHD.
Ultra-Short Throw. IP6X Sealed.
Your room is tight. Your screen is large. You want true 4K UHD without a flagship price tag. The BenQ LK830ST delivers it — a 0.496 ultra-short throw ratio that projects up to 300 inches from feet away, IP6X dustproof sealing (the highest dust-resistance rating available), and a sealed laser engine rated for 20,000 hours of zero-maintenance operation. 4,000 ANSI lumens. 4K UHD resolution. 93% Rec.709 color. Built for golf simulation, home theater, classroom and lecture environments, commercial multi-projector installs, and gaming setups where space, image size, and reliability all matter at once.
Built by BenQ — the world's #1 projector brand for four years running, trusted in homes, classrooms, boardrooms, simulation bays, and commercial installations worldwide. Dedicated golf-simulator projector line since 2021.
Three Things The LK830ST 4K Ultra Short Throw Projector Does Differently.
What makes BenQ's IP6X-sealed 4K UHD laser projector the right pick when room depth is limited and image size has to stay large.
0.496 Ultra-Short Throw
Projects up to 300 inches from 10 feet — places where standard short-throw projectors can't reach. A 100" screen fills from 3.6 feet, 120" from 4.3 feet. 114% offset lifts the image cleanly above the lens.
True 4K UHD + Best-In-Tier Gaming
3,840×2,160 native — 8.3 million pixels, four times 1080P. 93% Rec.709 color. 4.2ms input lag at 1080p/240Hz makes it the fastest projector in this lineup tier for console and PC gaming.
IP6X Sealed + Blending Ready
IP6X dustproof rating (highest available). 20,000-hour laser life with no filter cleaning. Blending Ready preset and WBA factory calibration for multi-projector commercial installs.
You Probably Recognize Yourself In One Of These.
Three buyers we see for the LK830ST — ultra-short throw, IP6X sealing, and 4K gaming each serve a specific use case.
You Need 4K But Your Room Is Tight
Space-constrained sim bay, basement, or garage
- Your room doesn't have 5–7 feet of throw distance for a standard projector
- You want a large screen — 120"+ — without compromising on image size
- You want true 4K UHD, not 1080P upscaled
Why this fits: 0.496 throw ratio means a 120" screen fills from 4.3 feet. The image quality flagship projectors deliver, in rooms they can't physically fit in.
You're Installing A Commercial Or Multi-Projector Setup
Commercial venue, dusty environment, multi-projector blended display
- Exhibition halls, training centers, retail showcases, themed entertainment
- Multi-projector blended displays where consistent color matters
- High-traffic environments where filter maintenance isn't practical
Why this fits: IP6X sealing (highest available), Blending Ready preset, WBA factory calibration, LAN-based OTA firmware updates, RS-232 control.
4K Gaming + Sim + Cinema In One Room
Dual-purpose AV room
- You game on PS5, Xbox Series X, or PC and want low-lag 4K projection
- You want sim, cinema, sports, and gaming in the same room
- You want Cinema, Entertainment, and HDR10 picture modes alongside Golf Mode
Why this fits: 4.2ms input lag at 1080p/240Hz — the fastest in this lineup tier. HDR10, HLG, and 15W built-in speaker for casual use.
BenQ LK830ST Key Specifications & Performance Data
Vertical scan rate 23–240Hz · 15W built-in speaker · 360° installation · 230W typical power · 3.6 kg compact body
What You're Actually Getting.
0.496 Ultra-Short Throw — Up To 300 Inches From Feet Away
The 0.496 throw ratio projects images up to 300 inches from distances that standard or conventional short-throw projectors cannot achieve — placing the unit directly beneath or above the screen rather than across the room. A 100-inch screen fills from just 3.6 feet; a 120-inch screen from 4.3 feet. For simulation bays where ceiling depth is fixed and screen size requirements are high, this throw ratio resolves the space-versus-image-size conflict without compromise. The 114% offset lifts the image above the lens cleanly, and Screen Fill handles 16:9, 16:10, 4:3, 1:1, and 5:4 aspect ratios with one button.
True 4K UHD + 4.2ms Gaming + HDR10
True 4K UHD (3,840×2,160) — 8.3 million pixels per frame, four times the detail of Full HD. Every course texture and HDR scene renders at native resolution. 93% Rec.709 color with 30-bit depth (1.07 billion colors). For gaming, 4.2ms input lag at 1080p/240Hz puts this projector in the elite tier — faster than most TVs, faster than every other projector in this lineup tier. HDR10 and HLG support. Picture modes for Golf, Cinema, Entertainment, Vivid, sRGB, and gaming, all switched from the remote.
IP6X Sealed Laser — Highest Dust Rating, 20,000 Hours
The LK830ST's optical engine carries an IP6X dustproof rating — complete protection against dust ingress, the highest dust-resistance rating available. Built for commercial simulation facilities with heavy foot traffic, airborne particulate, dusty garage environments, or demanding industrial conditions. The laser light source delivers 20,000 hours in Normal mode (30,000 in Eco) of consistent output with no brightness degradation, no color shift, and no lamp replacement costs. Rated for 24/7 continuous operation. Instant-on — no warm-up. Optional anti-dust air filter for harsh environments.
Blending Ready + WBA Calibration + LAN Management
Blending Ready Mode provides a one-click preset that applies key settings to prepare images for multi-projector edge blending — dramatically reducing setup time in large-scale installations. BenQ White Balance Adjustment (WBA) factory-calibrates white balance consistency across units, eliminating the color mismatch between adjacent projectors that can otherwise consume a full day of manual calibration. LAN-based OTA firmware updates and remote diagnostics keep all connected projectors current simultaneously — essential operational infrastructure for commercial venues.
What Ships With The LK830ST
Projector body, remote, power, and documentation. Fixed lens is built in — no separate lens purchase. The most compact 4K UST projector in the BenQ lineup at 7.93 lbs.
- BenQ LK830ST 4K UST laser projector
- Remote control with battery (RCA011)
- Power cord (1.8m)
- Quick start guide + warranty card
- Built-in 15W speaker
- 3.6 kg compact UST body
Important — fixed lens, no zoom: the LK830ST uses a fixed 0.496 throw lens with no optical zoom. Placement must be precise at installation — there's no zoom adjustment to compensate. BenQ's free Golf Sim 3D Planner tool helps verify exact placement for your room before mounting. Optional accessories: Anti-dust filter, CM00G3 universal ceiling mount.
The LK830ST is a fixed-lens 7.93-pound 4K UST projector. Confirm your throw distance and screen size carefully before purchasing — call (833) 796-4777 and we'll walk through your install with you.
BenQ LK830ST Throw Distance By Screen Size.
Throw distances for the LK830ST 4K UST projector. The fixed 0.496 throw ratio means image size and throw distance are tightly linked — no zoom adjustment available.
| Screen size | Throw distance | Notes |
|---|---|---|
| 100" | ~3.6 ft (1.1 m) | Common starter screen |
| 120" | ~4.3 ft (1.3 m) | Standard simulator bay |
| 133" | ~4.8 ft (1.5 m) | Popular large-format size |
| 150" | ~5.4 ft (1.6 m) | Large bay |
| 200" | ~7.2 ft (2.2 m) | Wide-format / commercial installation |
Based on 0.496 fixed throw ratio × screen width (16:9). Fixed lens — no optical zoom. Call (833) 796-4777 with your room dimensions to verify fit before ordering.
BenQ LK830ST vs AK700ST vs LH830ST.
How the LK830ST 4K UST projector compares to the AK700ST (4K short throw with Auto Screen Fit) and the LH830ST (1080P UST at lower cost).
| Capability | LK830ST | AK700ST | LH830ST |
|---|---|---|---|
| Resolution | 4K UHD | 4K UHD | 1080P |
| Brightness | 4,000 ANSI | 4,000 ANSI | 4,000 ANSI |
| Throw ratio | 0.496 (fixed UST) | 0.69–0.83 (zoom) | 0.496 (fixed UST) |
| Max image size | 300" | 150" | 300" |
| Auto Screen Fit | — | ✓ (camera-based) | — |
| Input lag (best) | 4.2ms @ 1080p/240Hz | 8.4ms @ 1080p/240Hz | 4.2ms |
| Color gamut | 93% Rec.709 | 95% Rec.709 | 93% Rec.709 |
| IP rating | IP6X (highest) | IP5X | IP6X |
| Blending Ready | ✓ | — | ✓ |
| eARC Dolby Atmos | — | 7.1 channel | — |
| Laser life | 20,000 hrs / 30,000 Eco | 20,000 hrs | 20,000 hrs |
| Price | $2,499 | $2,899 | $1,999 |
Picking between LK830ST, AK700ST, and LH830ST?
The LK830ST is the right choice if you need ultra-short throw, 4K, AND IP6X commercial sealing — especially for tight rooms, dusty environments, or multi-projector commercial installs. The AK700ST ($2,899) trades UST for Auto Screen Fit + curved warping and adds eARC Dolby Atmos — better for easy setup or curved-screen bays. The LH830ST ($1,999) is the 1080P version of the LK830ST — same UST throw and IP6X sealing at a lower resolution for a lower price. Call (833) 796-4777 if you need help deciding.
BenQ LK830ST — Frequently Asked Questions
The questions you'd ask us on the phone, answered here too.
Is the BenQ LK830ST compatible with all golf simulator software?+
How far does it need to be from the screen?+
Does it work as a home theater or gaming projector?+
Does the laser ever need replacing?+
Does Blending Ready include automatic edge blending software?+
What can you use the LK830ST for besides golf simulation?+
What's the warranty?+
Is financing available?+
Talk to a real person before you buy.
Authorized dealer · 3-year warranty · (833) 796-4777
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