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Optoma Indoor Golf Simulator Projector 4K Short Throw Laser 5000lm ZK521ST
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Optoma ZK521ST-B 4K Short Throw Laser Projector – 5,000 Lumens for Golf Simulators & Commercial Bays
Built for lights-on action, the Optoma ZK521ST-B packs 5,000 ANSI lumens of True 4K laser power; the ultimate ceiling-mounted golf simulator projector for home, garage, or commercial setups. Its short-throw optics mount safely overhead with no worries about shadows, while geometric correction and versatile aspect ratios (16:9, 16:10, 4:3, 1:1) snap your projection perfectly to any impact screen. Best of all, dedicated Golf Sim Color Mode unlocks the true potential of 4K with deep blue skies and hyper-realistic green grass because breathtaking color is what turns a good screen into a true-to-life course.

Optoma ZK521ST-B Highlights for Golf Simulator & Setup Flexibility
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0.79:1 Short-Throw Lens: Mounts close to the screen to eliminate shadows and stay safely clear of your swing path and ball flight.
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Native True 4K UHD: Ultra-sharp resolution renders realistic turf textures, crisp greens, and legible shot data for GSPro, E6 Connect, and FSX.
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5,000 ANSI Lumens: Delivers vivid, saturated, lights-on performance for bright garages, basements, and commercial bays.
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Maintenance-Free DuraCore Laser: Sealed engine eliminates lamp replacements while providing 30,000 hours of reliable operation.
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Flexible Setup & Lens Shift: Vertical lens shift (104%–125%) and geometric keystone correction make screen alignment fast and effortless (30" to 300").
Product Features & Specs
| Feature | Specification |
| Resolution & Lumens | True 4K UHD (3840×2160) – 5,000 ANSI Lumens |
| Display Type | Single-Chip DLP |
| Contrast Ratio | 300,000:1 Dynamic |
| Aspect Ratio | 16:9 (Supports 4:3, 16:10, Full, Auto, Native) |
| Throw Ratio | 0.79:1 Fixed Short Throw |
| Lens Shift | Vertical (104% ~ 125%) |
| Keystone | Horizontal ±15°, Vertical ±15°, 4-Corner & Geometric Correction |
| Light Source | Maintenance-Free DuraCore Laser (Up to 30,000 Hours) |
| Dimensions (W x D x H) | 8.5" × 10.8" × 4.3" (216 × 274 × 108.5 mm) |
| Weight | 6.6 lbs (3.0 kg) |
| Audio | 1 x 15W Built-In Speaker (Quiet 29 dB) |
| Connectivity | 2x HDMI 2.0 (4K HDR), 1x VGA, 2x USB-A, Audio-Out, RS232, RJ45 LAN, 3D Sync Out |
| Operation Rating | 24/7 Continuous Operation |
| Warranty | 3-Year Limited Warranty |
What’s Included in the Package
Everything you need to get your simulator studio mounted, connected, and playing right out of the box:
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Optoma ZK521ST-B 4K Laser Projector (Matte Black Enclosure)
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IR Remote Control (with batteries)
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AC Power Cord
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Quick Start Guide
The Ultimate 4K Simulator Experience: Who It’s For
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The Dedicated Home & Garage Golfer: Perfect for players building a high-end garage or basement simulator who want a pristine 4K picture without having to black out room lights.
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Commercial Centers & Fitting Bays: Built for 24/7 continuous operation, making it a ultra-durable workhorse for commercial golf venues, TrackMan studios, X-Golf franchises, and teaching professionals.
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Multi-Purpose Media Rooms: Easily transitions from an immersive golf simulation studio into a high-end 4K home theater or big-screen gaming center.
Protect your investment - Premium Projector Mount and Shields.
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Optic Cage Ceiling Mount Shield Enclosure: A heavy-duty, vibration-isolated ballistic shell that completely encases and protects your hanging projector from stray shots.
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SkyRail Projector Mount: A premium ceiling-mounted track system for smooth adjustments and clean alignment.
- Optic Cage Projector Floor Mount: A low-profile floor ramp enclosure engineered to deflect low-launching ball strikes safely over the lens.

Protect Your Investment: Heavy-Duty Projector Enclosures
Safeguard your Optoma ZK521ST-B 4K Short Throw Laser Projector with the heavy-duty Optic Cage Floor Shield—the ultimate combo for your simulator. Tailored perfectly for the LK830ST’s 0.5 ultra-short throw, this premium enclosure completely shields your high-end optics from stray balls and errant swings. Choose between clean floor setups or secure ceiling mounts for effortless alignment and total peace of mind.
Golf Simulator Customization
Need help with room dimensions, throw distance, or custom setups? Contact Turnkey Pro Studios for expert guidance.
Guaranteed response within 24 hours with dedicated 1-on-1 support.
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Email: sales@turnkeyprostudios.com
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Phone: 402-577-0167
Optoma Indoor Golf Simulator Projector 4K Short Throw Laser 5000lm ZK521ST Further Information
Shipping Rates & Timelines
- Free Standard Shipping: We are proud to offer free standard shipping on our systems.
- Processing Time: 2-3 Business Days (This includes thorough quality checks and secure packaging).
- Transit Time: 3-5 Business Days via trusted carriers (UPS or FedEx).
- Total Delivery Timeline: You can expect your order to arrive within 5-8 Business Days.
- Multiple Packages / Split Shipments: If you purchased accessory packages, your items may arrive in different boxes and at slightly different times. Because we partner with specialized, top-tier suppliers to bring you the best components, different parts of your order may ship from separate warehouses.
Order & Shipping Confirmation
Once an order is placed, a confirmation email will be sent. This means that Turnkey Pro Studios has received your order in our system. Once received, we immediately reach out to our suppliers to confirm that the ordered items are in stock and ready for shipment.
If any item is out of stock, on backorder, or otherwise unavailable, Turnkey Pro Studios will notify you promptly via email. Once your product(s) are confirmed and ready for transit, they will be shipped out.
Tracking & Cancellations
An email with your tracking information will be sent to you within 24 hours of your order being shipped. If you have not received tracking information within 3 business days after the lead time posted on the product page, please contact our support team.
Please Note: Once an order has shipped, cancellation is not permitted. Please see our "Cancellations & Returns" policy for more details.
Key Features & Capabilities
0.79:1 Short-Throw Lens: Mounts close overhead so you get a completely shadow-free picture on screen while keeping the unit safely clear of your club's swing path and ball flight.
5,000 ANSI Lumens Brightness: Lets you play with full room or overhead lights on in garages, basements, or commercial bays without the image looking washed out or dim.
Dedicated Golf Sim Color Mode: Specially tunes grass greens and sky blues to maximize the 4K experience, making course visuals look hyper-realistic rather than dull or flat.
Native True 4K UHD Resolution: Delivers razor-sharp fairway textures, crisp greens, and perfectly legible shot data from software like GSPro, E6, and FSX with zero pixelation.
30,000-Hour DuraCore Laser Engine: Saves you money by eliminating bulb replacements entirely while providing instant-on, maintenance-free play for years.
Vertical Lens Shift & Smart Fit Alignment: Eliminates setup frustration by letting you perfectly snap and square the picture to your impact screen frame using manual dials or your smartphone camera.
Display Performance
- Display Technology: Single-Chip DLP®
- Native Resolution: True 4K UHD (3840×2160)
- Brightness: 5,000 ANSI Lumens
- Contrast Ratio: 300,000:1 (2,000,000:1 Dynamic)
- Native Aspect Ratio: 16:9 (Compatible with 4:3, 16:10, Full, Auto, Native)
- Keystone Correction: Horizontal ±15°; Vertical ±15°
- Screen Size Range: 30" to 300" diagonal
- Uniformity: 75%
Optical Specs
- Throw Ratio: 0.79:1 Fixed Short Throw
- Lens Shift: Vertical 104% ~ 125%
- Projection Distance: 0.89 m – 2.93 m (Optical) / 1.0 m – 10 m (Mechanism)
- Focal Length: 11.6 mm
Light Source
- Light Source Type: DuraCore Laser Engine
- Lifespan: Up to 30,000 hours (Eco mode)
Input Lag & Gaming Speed
- 4K @ 60Hz: 16.7 ms
- 1080p @ 60Hz: 16.7 ms
- 1080p @ 120Hz: 8.6 ms
Connectivity & Control
- Inputs: 2 x HDMI 2.0, 1 x VGA-In
- Outputs: 2 x USB-A 2.0, 1 x 3.5mm Audio Out, 1 x 3D Sync Out
- Control Ports: 1 x RJ45 (LAN Control), 1 x RS232, 1 x 12V Trigger
General & Operational
- Audible Noise: Quiet 29 dB
- Audio: 1 x 15W Built-In Speaker
- Operation Rating: 24/7 Continuous Operation & 360° Orientation
- Security Features: Security Bar, Kensington Lock, Password-Protected Interface
Power & Energy
- Power Supply: AC 100 ~ 240 V, 50 ~ 60 Hz
- Power Consumption (Bright Mode): 196 W @ 110V
- Power Consumption (Eco Mode): 147 W @ 110V
- Standby Consumption: ≤0.5 W
Dimensions & Weight
- Dimensions without feet (W x D x H): 10.8" × 8.5" × 4.3" (216 × 274 × 108.5 mm)
- Dimensions with feet (W x D x H): 10.8" × 8.5" × 4.5" (216 × 274 × 114 mm)
- Net Weight: 6.6 lbs (3.0 kg)
- Gross Weight: 9.4 lbs (4.3 kg)
Package & Software
- In the Box: AC Power Cord, Business Remote Control, 2 x AAA Batteries, Quick Start Guide
- Supported Software: Optoma Smart Control App, Optoma Management Suite (OMS)
Placement & Shadows
How far from the screen should the Optoma ZK521ST-B be mounted?
Thanks to its 0.79:1 fixed short-throw optics, you can mount the projector safely overhead and close to your impact screen:
- 10-foot wide screen: ~7.9 feet away
- 12-foot wide screen: ~9.5 feet away
- 14-foot wide screen: ~11.0 feet away
This short positioning keeps the unit safely out of your swing path and ball flight trajectory while filling your entire enclosure.
Will I cast a shadow onto the screen when I swing?
No. Because of the 0.79:1 short-throw design, the ZK521ST-B mounts close overhead between the golfer and the screen. As long as it is mounted at the recommended throw distance, your body, club, and ball flight stay completely behind the light beam—ensuring a 100% shadow-free playing surface.
💡 Zero-Shadow Guarantee: Overhead short-throw mounting ensures the light beam passes above your swing zone. You get a full, uninterrupted 4K view of the fairway with zero body shadows across your impact screen.
Setup & Screen Adjustment
How does "Smart Fit" work, and how do I align the image to my screen frame?
The Optoma Smart Control App features Smart Fit, an automatic alignment tool that uses your smartphone camera to scan your enclosure frame and snap the image into place. Additionally, the projector features vertical lens shift (104%–125%), horizontal and vertical keystone (±15°), and 4-corner geometric correction to manually fine-tune the image down to the millimeter without moving the ceiling mount.
Does the ZK521ST-B support different aspect ratios like 4:3 or 16:10?
Yes. While its native resolution is True 4K UHD (16:9), it fully supports multiple aspect ratios including 4:3, 16:10, 1:1, Full, and Auto. Whether you have a tall square enclosure or a wide widescreen bay, you can adjust the image settings to match your impact screen.
Brightness & Image Quality
Is 5,000 ANSI Lumens bright enough for a garage or well-lit room?
Yes, 5,000 ANSI Lumens is commercial-grade brightness. Traditional home theater projectors wash out unless the room is dark, but the ZK521ST-B maintains vivid, saturated colors even in bright garages, basements, or commercial bays with full overhead LED lights on.
What makes "Golf Sim Color Mode" different from standard picture settings?
Standard projector modes often produce muddy greens or washed-out skies. Optoma’s dedicated Golf Sim Color Mode specifically tunes color reproduction to enhance grass green tones, deep blue skies, and shadow depth—unlocking the full visual potential of True 4K UHD across software like GSPro, E6 Connect, and Foresight FSX.
Hardware, Latency & Durability
Will my swing feel laggy? What is the input lag?
No. Real-time feedback is critical when hitting a shot into a screen. The ZK521ST-B offers ultra-fast response times for seamless simulation:
- 4K @ 60Hz: 16.7 ms
- 1080p @ 60Hz: 16.7 ms
- 1080p @ 120Hz: 8.6 ms
Your ball flight appears instantly on screen the exact moment impact occurs.
How long will the laser engine last, and does it require maintenance?
The DuraCore Laser Engine is completely sealed against dust and rated for up to 30,000 hours of operation. It requires zero lamp/bulb replacements, zero filter cleaning, and features instant power-on/off functionality so you can step into your bay and start swinging immediately.
Warranty, Returns & Order Policies
At Turnkey Pro Studios, all electronic products ship factory-new, pre-tested, and fully insured in original manufacturer packaging. To protect your investment and maintain professional-tier pricing, our warranty and return policies are structured as follows:
3-Year Optoma Factory Warranty
- Full Manufacturer Coverage: Backed by Optoma’s 3-Year Limited Warranty, covering your DuraCore laser engine, optics, and internal hardware against manufacturing defects.
- Dedicated Studio Assistance: You never have to navigate claims alone. If a hardware issue arises, contact us directly and our team will facilitate warranty service with the manufacturer on your behalf.
Defective / DOA Support
- Claim Submission: If your projector arrives defective or experiences an initial hardware fault (DOA), contact our support team at sales@turnkeyprostudios.com to submit your claim.
- 30-Day Return Window: Once your claim is approved, you have a 30-day window to return the unit to the manufacturer—giving you plenty of time with no rush and no hassle.
Zero-Return & Final Sale Policy for Electronics
- Final Sale Upon Acceptance: To guarantee every customer receives factory-sealed, uncompromised gear, sales on electronic items (launch monitors, projectors, computers) are final once delivery is accepted from the carrier.
- No Returns for Change of Mind: We do not accept returns or exchanges for buyer's remorse, preference changes, or improper room planning.
- Cancellations: Order cancellation requests must be submitted prior to shipping confirmation. Once an order has shipped, it is subject to our standard delivery and final sale terms.
Shipping Damage Protection & 24-Hour Rule
- 100% Insured Delivery: Every shipment is fully insured against damage in transit.
- 24-Hour Reporting Window: If your shipment arrives damaged, you must take clear photos of the external packaging and damaged product, and notify sales@turnkeyprostudios.com within 24 hours of delivery to process a replacement.
- Delivery Refusal: We strongly advise inspecting all packages upon arrival and refusing delivery if there is obvious external damage (crushed, torn, or severely dented boxes).
Certified Systems Integrator
As a specialized systems integrator, we do more than just resell products. We vet, test, and authorize only market-proven hardware from elite manufacturers. By sourcing through TurnKey Pro Studios, you are guaranteed authentic, high-performance gear backed by professional-grade technical certification.
Stealth-Quiet™ Impact Technology
Our triple-layer screens are engineered for industry-leading noise reduction. They are the premier choice for residential garages, luxury hotels, and commercial lounges where acoustic control is a priority.
Smart Installation Frameworks
Skip the complexity. We offer Smart Frameworks designed for rapid deployment, reducing setup time from hours to minutes. Our modular systems ensure professional stability with intuitive, tool-efficient assembly.
"Build Your Own" Studio Tools
Eliminate the guesswork with our interactive Build Your Own Simulator page. You select the specific components, from launch monitors to enclosures, giving you total control over your configuration while ensuring every part is technically compatible.
Expert Consultations in <24 Hours
Get recommendations from specialists who understand the technical nuances of golf simulation. Reach out today, and our experts will provide a tailored response to assist your journey within 24 hours.
Tier-Level Technical Support
We are your dedicated partner for the life of your studio. From initial configuration to long-term maintenance, we provide expert, Tier-Level support to ensure your system operates at peak efficiency from day one. We take pride in providing the fastest technical customer support in the industry to keep you up and running.








