Projector Room-Fit Guide · Short throw 1080p
BenQ TH671ST for a Golf Simulator: Throw Distance & Mounting Guide
BenQ · 1920x1080 · 3000 lumens · Updated June 2026
The BenQ TH671ST has a 0.69–0.83 throw ratio, which means it needs 9′ 10″ to 11′ 10″ of distance to fill a standard 8-foot-tall 16:9 impact screen. That short throw is what makes it sim-friendly: the projector mounts ahead of the hitting area, so your body never blocks the beam.
Throw distance by screen size
Lens-to-screen distance for common impact-screen heights (16:9 aspect).
| Screen height (16:9) | Image width | Lens-to-screen distance |
|---|---|---|
| 7 ft | 12.4 ft | 8′ 7″ – 10′ 4″ |
| 7.5 ft | 13.3 ft | 9′ 2″ – 11′ 1″ |
| 8 ft | 14.2 ft | 9′ 10″ – 11′ 10″ |
| 8.5 ft | 15.1 ft | 10′ 5″ – 12′ 7″ |
| 9 ft | 16.0 ft | 11′ 0″ – 13′ 3″ |
Ceiling mount & lens drop
With a 104% vertical offset, in a 9 ft room with a 7.5 ft screen the lens sits about 2″ below the ceiling; in a 10 ft room with a 8 ft screen the lens sits about 8″ below the ceiling. Match your ceiling mount's drop length to that number — fixed 6″ drop mounts are often too long for high-offset short throws, which hangs the image below the screen.
Room depth check
Budget about 17 ft of total room depth for the BenQ TH671ST: maximum throw of 11′ 10″ to an 8 ft screen, plus 10–12 ft of ball-to-screen distance and swing room (throw and hitting space overlap with a short throw, which is why it fits tighter rooms). Behind-ball radar launch monitors add a further 7–9 ft behind the ball.
Frequently asked questions
How far should the BenQ TH671ST be from a golf simulator screen?
For an 8 ft tall 16:9 impact screen (14.2 ft wide), the BenQ TH671ST's 0.69–0.83 throw ratio puts the lens 9′ 10″ to 11′ 10″ from the screen. Measure from the front of the lens, not the back of the chassis.
Is the BenQ TH671ST good for a golf simulator?
BenQ TH671ST is a short throw 1080p model with 3000 lumens. Its short throw keeps the mount ahead of the golfer, which minimizes shadows on the screen.
What room depth do I need for the BenQ TH671ST?
Plan on roughly 17 ft minimum: 11′ 10″ of throw to an 8 ft screen plus ball-flight and stance space. Radar launch monitors push the comfortable minimum higher — verify your exact layout in the free calculator.
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