BenQ TH671ST 1080p Short Throw Projector
- 1920 x 1080 native resolution, DLP
- 3000 ANSI lumens brightness
- 0.69 to 0.83 throw ratio, 100 inch image at 1.5 m
- 60 to 120 inch clear image, up to 300 inches
- 10000:1 contrast ratio
- 2 HDMI inputs, one with MHL, plus VGA
- 4000 to 15000 hour lamp life by mode
- Auto vertical keystone, +/- 40 degrees
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A bright short throw projector for console gaming and movies in compact rooms; the lamp needs eventual replacement and serious audio calls for separate speakers.
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ASIN: B076MHKTFHModel: TH671STCategory: Video Projectors
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Overview
Gamers and movie fans with limited room depth get a short throw BenQ projector that throws a large picture from close to the screen. A DLP engine and lamp light source form the image, and a game mode cuts input lag for console play.
Short throw optics let a console setup fill a wall without running cables across the room or mounting at the back. The lamp is a wear part, so a spare lamp kit will eventually be needed, and the internal speaker is a single small driver, making external audio worth adding for movie nights.
Who it's for
Apartments and dens where the projector must live close to the screen, with a console plugged in beside it, are its home. Viewers wanting long-life laser light or room-filling sound from the unit itself should look elsewhere.
Pros and cons
- Big screen from little floor depth
- Game mode for low input lag
- Keystone squares the picture automatically
- MHL input for phones and tablets
- Lamp needs periodic replacement
- Single built-in speaker
- Wireless casting needs an optional dongle
- Lens shift not listed
Performance notes
Picture size is set by distance: the short throw lens produces a large image from little floor depth, and the zoom fine-tunes it. Brightness and lamp life move together, with eco modes extending life at lower output. Input lag in game mode governs how responsive console play feels.
Specifications
| Brand | BenQ |
|---|---|
| Model | TH671ST |
| Dimensions & fit | |
| Maximum Image Size | 300 Inches |
| Minimum Image Size | 60 Inches |
| Item weight | 5.9 pounds |
| Item Dimensions L x W x H | 11.6 × 9.5 × 4.6 inches |
| Capacity & performance | |
| Wattage | 320 watts |
| Noise level | 1 dB |
| Power & efficiency | |
| Lamp Wattage | 240 watts |
| Compatibility & installation | |
| Mounting Type | Ceiling Mount |
| Warranty & support | |
| Warranty Description | 3 years |
| Other details | |
| Native Resolution | 1920 x 1080 |
| Display Resolution Maximum | 1080p |
| Brightness | 3000 lumens |
| Contrast Ratio | 10000:1 |
| Minimum Throw Distance | 5 feet |
| Display Type | DLP |
| Keystone correction | Auto vertical, +/- 40 degrees |
| Throw ratio | 0.69 to 0.83 |
| Zoom ratio | 1.2x |
Frequently asked questions
Can the BenQ TH671ST be mounted on a ceiling?
Yes. The listing gives ceiling mount as the mounting type, but a ceiling bracket is not part of the box.
Does the TH671ST support 3D?
Yes. It handles frame sequential, frame packing, side by side and top bottom formats, and 3D glasses are an optional accessory.
Is the TH671ST a laser projector?
No. It uses a lamp light source rated at 240 watts, and a spare lamp kit is offered as an optional accessory.
How loud is the BenQ TH671ST?
BenQ lists acoustic noise of 33 dBA in typical mode and 29 dBA in eco mode.