Home / Business Projectors / BenQ TH671ST Full HD 3,000-Lumen Short Throw Projector

BenQ

BenQ TH671ST Full HD 3,000-Lumen Short Throw Projector

Name: BenQ TH671ST Full HD 3,000-Lumen Short Throw Projector
Brand: BenQ
SKU: 9H.JGY77.1HE
Price: 743.48 GBP
Availability: InStock

Return within 14 days

3-year manufacturer warranty

Installation services available

£743.48inc. VAT

£619.57 ex. VAT

In stock, dispatched within 2 working days

Visa
Mastercard
American Express
PayPal

Or 3 interest-free payments of £247.83 with PayPal Pay in 3.

Independently reviewed on Trustpilot

Seen it cheaper? We price-match genuine like-for-like quotes. How it works

Bought in the UK, backed in the UKWhy it matters →

In UK stock, ships from the UK
UK manufacturer warranty
UK-based engineers
No import duty or customs charges
GBP pricing, UK VAT invoices

Return within 14 days

3-year manufacturer warranty

Installation services available

Key specifications

Brightness3000 ANSI lumens

Light Source LifeUp to 15,000 hrs (LampSave)

Zoom Ratio1.2x

Native Aspect Ratio16:9

Rec. 709 Coverage92%

Input Lag16.7 ms (1080p 60Hz)

HDMI Inputs2 x HDMI 1.4a (1 with MHL)

Speaker5W

All 26 specifications

Talk to an Expert

Description

The BenQ TH671ST is a short-throw Full HD DLP projector built for rooms where a long throw distance isn't practical. It projects a 100-inch image from as close as 4.9 feet, making it well suited to smaller living rooms and rooms where the projector needs to sit close to the screen, including golf simulator setups.

Also in this range:5,500-Lumen 4,600-Lumen 4,000-Lumen 5,000-Lumen Full specifications Datasheet Compare alternatives

With 3,000 ANSI lumens and a 10,000:1 contrast ratio, it delivers a bright, punchy image for movies, TV and gaming, backed by dedicated Cinema, Game, Sport and Vivid TV picture modes. Input lag is rated at 16.7ms at 1080p/60Hz, keeping fast-paced console gaming responsive.

Dual HDMI inputs (including MHL support), a 5W speaker, auto vertical keystone correction and 1.2x zoom round out a flexible, easy-to-install projector for entertainment spaces where distance from the screen is limited.

Key features

Short Throw Design

Projects a 100-inch image from just 4.9 feet, ideal for compact rooms.

3,000 ANSI Lumens

Bright, punchy DLP image with a 10,000:1 contrast ratio for movies and gaming.

Low Input Lag

16.7ms input lag at 1080p/60Hz keeps console gaming responsive.

Dual HDMI with MHL

Two HDMI inputs including MHL support for flexible device connections.

Technical specifications

Choose a section to view its specifications.

Display (5)

Brightness: 3000 ANSI lumens
Native Aspect Ratio: 16:9
Resolution: Full HD (1920 x 1080)
Contrast Ratio: 10,000:1
Aspect Ratio: 16:9

Connectivity (4)

Input Lag: 16.7 ms (1080p 60Hz)
HDMI Inputs: 2 x HDMI 1.4a (1 with MHL)
White Light Output: 3,000 ANSI lumens
Connectivity: 2 x HDMI 1.4a (one with MHL), D-sub 15-pin in and out, USB Type-A, USB Mini-B, RS-232

Audio (2)

Speaker: 5W
Audio: 5 W speaker, 3.5 mm audio in and out

Power & Physical (5)

Max Image Size: 100 inch from 4.9ft
Power Consumption: 320 W typical
Weight: 2.7 kg
Dimensions: 296 x 224 x 120 mm
Dimensions (W x D x H): 296 x 224 x 120 mm

General (10)

Light Source Life: Up to 15,000 hrs (LampSave)
Zoom Ratio: 1.2x
Rec. 709 Coverage: 92%
Picture Modes: 3D, Bright, Cinema, Game, Sport, Vivid TV
Projection Technology: DLP
Light Source: Lamp, 4,000 hours normal / 10,000 hours SmartEco / 15,000 hours LampSave
Throw Ratio: 0.69 - 0.83:1
Zoom: 1.2x
Keystone Correction: Vertical ±40°
Noise Level: 33 dB normal, 29 dB eco

Throw distance guide

With its 0.69 to 0.83:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:9 image sizes. Try our throw distance calculator for your exact room.

Try a size

100"

16:9 diagonal image

Image

2.21 m × 1.25 m

Lens position

1.5 m to 1.8 m

Side view: drag the projector to try its available lens positions

Position fits

Image size	Image dimensions	Lens distance range
60"	1.33 m × 0.75 m	0.9 m to 1.1 m
80"	1.77 m × 1.00 m	1.2 m to 1.5 m
100"	2.21 m × 1.25 m	1.5 m to 1.8 m
120"	2.66 m × 1.49 m	1.8 m to 2.2 m
150"	3.32 m × 1.87 m	2.3 m to 2.8 m

Planning from a real wall? Use the projector screen size calculator to upload a photo, preview the image to scale and find projectors that fit within your maximum available space. Replacing an existing projector? The projector replacement calculator checks whether this lens covers the ratio your current mount needs.

Distances are lens-to-screen, calculated from the manufacturer's stated throw ratio; allow for lens shift and mounting hardware. Always confirm against the manufacturer's installation guide before fixing mounts.

See it on your wall, to scale

Choose a picture size, then upload a wall photo, or scan the QR code and take it on your phone. We'll show the projected picture at its real size.

Picture size

100" 16:9 · 2.21 m × 1.25 m

On a computer, the QR code sends your phone photo straight back to this page.

Loading the wall preview…

Complete your setup

Optional extras that fit this product. Tick anything you need and it joins the same basket — or add this product on its own from the buy box above.

Choose a Mount

Open

Choose a Screen

Video Conferencing

No video conferencing options found in our catalogue.

Professional Installation

Want it installed by our AV experts? We offer professional on-site installation including mounting, cable management, and system configuration.

Add installation enquiryWe'll contact you to arrange a site surveyPOA

Your Configuration

BenQ TH671ST Full HD 3,000-Lumen Short Throw Projector × 1£743.48

Total£743.48

inc. VAT

Documents

BenQ TH671ST datasheet (PDF)

Frequently asked questions

How short is the throw on the TH671ST?

It projects a 100-inch image from just 4.9 feet away, making it well suited to smaller living rooms and golf simulator setups where the projector needs to sit close to the screen.

How bright is the TH671ST and what's the contrast ratio?

It delivers 3,000 ANSI lumens with a 10,000:1 contrast ratio for a bright, punchy DLP image at full HD 1080p.

Is the TH671ST good for console gaming?

Yes, input lag is rated at just 16.7ms at 1080p/60Hz, and it has a dedicated Game picture mode alongside Cinema, Sport and Vivid TV modes.

How long does the lamp last?

The lamp is rated for up to 15,000 hours.

What warranty and delivery does the TH671ST come with?

It's backed by a 3-year (36-month) warranty and is in stock at TopAV, so it's dispatched within 2 working days.

Delivery & returns

Estimated delivery 10 Oct - 14 Oct. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.

Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.

Full delivery & returns policy

Bought in the UK, backed in the UK

This item is in UK stock and ships to you from within the UK, so the order never crosses a customs border on its way to you.
The manufacturer warranty is honoured here in the UK. If something fails, you deal with us, not with an overseas seller in another time zone.
Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.
Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.
Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts: no currency conversion and no surprises at the door.

What to check before buying AV online →

Payment & security

Pay securely by card. Education customers can apply for a 30-day purchase order account.

Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice, with no card payment required. Purchase orders and credit terms are for education customers only.

All transactions are processed over an encrypted, secure checkout.

Purchase order & invoice terms