Short Throw Projector for Golf Impact Screen: When Close Mounting Is the Right Call
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Addy breaks down throw ratio geometry for golf sims, arguing that short-throw projectors (0.69–0.89 ratio) are often mandatory for tight home spaces because standard-throw units need 10–15 feet of depth. The piece covers the head-shadow problem, brightness scaling (3,000–5,000 lumens minimum depending on screen width), and explains why ultra-short-throw models backfire in golf setups. Sourced from Home Performance Lab and BenQ buying guides.
Excerpt from GolfingSim - News
Here's the number that ends most projector debates before they start: a standard-throw projector often needs to sit 10 to 15 feet back from a 10-foot screen, while a short throw covers the same screen from just 6 to 9 feet (Source: Home Performance Lab – Golf Simulator Projector Placement Guide, 2026). In a garage or a spare bedroom, those extra feet are the difference between a crisp image and your own shadow swinging back at you.
If your room is tight, a short throw projector for your golf impact screen isn't a nice-to-have. It's usually the only projector class that physically fits. But "short throw" is a range, not a single thing, and going too short backfires hard. Let's break down the numbers.
What "Short Throw" Actually Means (Throw Ratio, Not Marketing)
Throw ratio is simple: it's the projection distance divided by the image width. A 0.8 throw ratio means the projector sits 0.8 feet back for every foot of screen width. On a 10-foot-wide screen, that's 8 feet.
The sweet spot for a golf simulator lands between a 0.69 and 0.89 throw ratio (Source: Top Shelf Golf – Short Throw vs Ultra-Short Throw Placement Guide). That window fills a full impact screen while still leaving room to ceiling-mount, cart-mount, or tripod the unit behind your hitting zone.
Go higher than about 1.0 and you're into standard-throw territory — great images, but the projector has to live so far back that the golfer walks straight into the beam. That's where the classic head-shadow problem comes from.
By the Numbers: Why Short Throw Wins in a Real Room
The case for close mounting is mostly geometry, and the geometry is well documented.
Short-throw projectors typically sit 6 to 9 feet from a 10-foot screen — close enough to clear the golfer's swing path, but not so close they lose image size (Source: Home Performance Lab – Golf Simulator Projector Placement Guide, 2026). Standard-throw models needing 10 to 15 feet simply don't fit in most residential builds.
Brightness has to scale with that closeness. The typical minimum for a golf sim is 3,000 ANSI lumens with a short-throw lens for a ~10-foot screen, climbing to 4,000–5,000 lumens for screens wider than 12 feet (Source: BenQ US – Golf Simulator Projector Buying Guide). Close mounting concentrates light, so under-buying lumens shows up as a dim, muddy picture fast.
And there's a hard floor on "closer is better": ultra-short-throw projectors generally don't work for golf. They sit in the ball's rebound path, they're…
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