BenQ TH671ST Standard throw projector 3000 ANSI lumens DLP 1080p (1920x1080) White

The BenQ TH671ST is a short-throw DLP projector with Full HD (1920x1080) native resolution and up to 3000 ANSI lumens brightness. It uses a lamp light source and supports a 16:9 aspect ratio, built-in speakers and multiple input options including HDMI, VGA and USB. The projector offers a throw ratio of 0.69–0.83, a zoom of 1.2x and a projection size range from 30" to 300". Physical dimensions are 296 x 224 x 120 mm and the weight is approximately 2.7 kg.

Advantages

The projector delivers high brightness with Full HD image quality suitable for well-lit rooms, supports a range of video formats up to 1080p and provides flexible short-throw placement thanks to a 0.69–0.83 throw ratio. Long lamp life is available in eco modes, multiple connection ports (two HDMI including MHL, VGA, USB-A, USB Mini-B, audio and RS-232) allow varied source options, and built-in speakers simplify setup for casual viewing or presentations.

Suitable for

• Home entertainment and movies in medium to large rooms
• Gaming with reduced input lag (console or PC)
• Classroom or small meeting-room presentations
• Short-throw installations where space is limited

Key specifications

• Projection technology: DLP
• Native resolution: Full HD (1920 x 1080)
• Brightness: 3000 ANSI lumens (max)
• Contrast ratio: 10000:1 (typical)
• Aspect ratio: 16:9
• Throw ratio: 0.69–0.83
• Zoom: 1.2x
• Projection size: 30"–300"
• Lens: f = 10.2–12.24 mm, F/# = 2.6–2.78
• Lamp power: 240 W
• Lamp life: 4000 h (Normal); 10000 h (Eco/SmartEco); 15000 h (LampSave)
• Noise level: 33 dB (Normal) / 29 dB (Eco)
• Power consumption: 320 W (operating); 0.5 W (standby)
• Digital horizontal frequency: 15,000–102,000 Hz
• Operating temperature range: 0–40 °C
• Display colours: 1.07 billion
• 3D compatibility: Yes
• Built-in speakers: Yes
• Inputs/outputs: 2 × HDMI (one MHL), VGA, USB-A, USB Mini-B, Audio (3.5 mm), IR receiver, RS-232
• Dimensions (W × D × H): 296 × 224 × 120 mm
• Weight: ~2.7 kg

How to use

Place the projector at the appropriate short-throw distance from the screen according to the throw ratio (0.69–0.83) and adjust zoom and vertical keystone (±40°) to obtain a correctly framed image. Connect a source device via HDMI, VGA or USB and select the input on the projector. Use the remote control or onboard menus to set brightness mode, aspect ratio and resolution. For longer lamp life, select Eco or SmartEco modes when high brightness is not required.

Recommendations

For best image quality, use a flat, neutral-colour projection surface and position the projector so the lens is perpendicular to the screen. Choose Eco or SmartEco modes for extended lamp life and lower fan noise in darker viewing environments. Ensure adequate ventilation and operate between 0–40 °C.