Throw distance for simulator screens
Simulator screens are usually 4:3 or square, while most projectors are 16:9 or 16:10. To fill a squarer screen, the projector's full frame is set so its height matches the screen height; the extra width is masked in software. That means the throw distance depends on the projector's native frame width, not the screen width.
| Screen | Full 16:9 frame width | Lens-to-screen distance |
|---|---|---|
| 10.5 × 8 ft (4:3) | 14.0 ft | Throw ratio not published |
| 12 × 9 ft (4:3) | 16.0 ft | Throw ratio not published |
| 8 × 8 ft (1:1) | 14.2 ft | Throw ratio not published |
| 12 × 7.5 ft (16:10) | 13.3 ft | Throw ratio not published |
| 14 × 7.9 ft (16:9) | 14.0 ft | Throw ratio not published |
How bright will it look?
Brightness on the screen is what the golfer sees. We convert the rated lumens into foot-lamberts (fL) for each screen, counting only the share of the frame that lands on the screen, and assuming a screen gain of 1.0. Real results are lower in eco modes and as the light source ages.
| Screen | Frame on screen | Brightness | What that means |
|---|---|---|---|
| 10.5 × 8 ft (4:3) | 75% | 27 fL | best in a dark room |
| 12 × 9 ft (4:3) | 75% | 21 fL | best in a dark room |
| 8 × 8 ft (1:1) | 56% | 26 fL | best in a dark room |
| 12 × 7.5 ft (16:10) | 90% | 30 fL | good in a dim room |
| 14 × 7.9 ft (16:9) | 100% | 27 fL | best in a dark room |
Resolution and aspect ratio on a sim screen
The seller lists Full HD 1080p (1920 × 1080) with a native 16:9 frame. On a squarer screen part of the frame is unused, so the effective resolution drops.
| Screen | Pixels on the screen | Share of native frame |
|---|---|---|
| 10.5 × 8 ft (4:3) | 1,440 × 1,080 | 75% |
| 12 × 9 ft (4:3) | 1,440 × 1,080 | 75% |
| 8 × 8 ft (1:1) | 1,080 × 1,080 | 56% |
| 12 × 7.5 ft (16:10) | 1,728 × 1,080 | 90% |
| 14 × 7.9 ft (16:9) | 1,920 × 1,080 | 100% |
Light source and running
A lamp gradually dims and eventually needs replacing; budget for a spare if you play daily.
| Ownership figure | Value |
|---|---|
| Input lag | 16.67 ms |
Fit check: BenQ TH671ST
Planning checks from the published specification and our screen calculations.
- ✓MountingMount sold separately. Short-throw models usually ceiling-mount just in front of the golfer so the swing does not cast a shadow; floor enclosures are an alternative. See projector mounts.
- ✓Throw distanceThrow ratio not published — confirm with the seller.
- ?Screen shapeNative 16:9; on a 4:3 screen 75% of the frame is used.
- ?Image alignmentkeystone: Vertical
- iCablingPlan an HDMI run from the PC or phone/tablet to the projector; long runs may need an active or fibre HDMI cable.
Specifications
Each figure is labelled with where it comes from. Numbered references link to the source list below.
Published specifications
| Brightness | 3,000 ANSI lumens[S1] | Retailer listing |
|---|---|---|
| Resolution | Full HD 1080p (1920 × 1080)[S1] | Retailer listing |
| Native aspect ratio | 16:9[S1] | Retailer listing |
| Display technology | DLP[S1] | Retailer listing |
| Light source | Lamp[S1] | Retailer listing |
| Throw ratio | Short throw (ratio not published in the listing)[S1] | Retailer listing |
| Keystone | Vertical[S1] | Retailer listing |
| Input lag | 16.67 ms[S1] | Retailer listing |
FOREference calculations
| Brightness on that screen | 27 fL | FOREference calculation |
|---|
Limitations to weigh
- Lamp light source: brightness fades and the lamp needs replacing.
- Throw ratio not published in the listing we used.
- Mount, cables and screen are not included.
Alternatives worth comparing
Where to buy
3 specialist sellers list this exact product. Prices were observed on 30 Sep 2026; confirm the current price, stock and included items before ordering.
| Seller | Listed price | Type |
|---|---|---|
| Shop Indoor Golf | $949 | Specialist retailer |
| Golf Bays | $999 | Specialist retailer |
| Rapsodo | $949 | Specialist retailer |
Every link opens the product page for this exact model. We may earn a commission; it never changes what we publish. Disclosure
Questions buyers ask
How far from the screen does the BenQ TH671ST go?
Is the BenQ TH671ST bright enough for a golf simulator?
Will the BenQ TH671ST fill a 4:3 golf screen?
Laser or lamp: which does the BenQ TH671ST use?
Sources and verification
- Rapsodo — BenQ TH671ST Golf Simulator Projector — product page and specifications Retrieved 30 Sep 2026
- Shop Indoor Golf — BenQ TH671ST Golf Simulator Projector — product page Retrieved 30 Sep 2026
- Golf Bays — BenQ TH671ST Golf Simulator Projector — product page Retrieved 30 Sep 2026
FOREference has not tested this product hands-on. This reference is compiled from the sources above; our calculations are labelled and show their working. Last verified 30 Sep 2026. How we work