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BenQ

BenQ TH575i Full HD 3,800-Lumen Google TV Projector

Name: BenQ TH575i Full HD 3,800-Lumen Google TV Projector
Brand: BenQ
SKU: 9H.JRF77.1JE
Price: 445.88 GBP
Availability: InStock

Return within 14 days

3-year manufacturer warranty

Installation services available

£445.88inc. VAT

£371.57 ex. VAT

In stock, dispatched within 2 working days

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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

Brightness3800 ANSI lumens

Light Source LifeUp to 15,000 hrs (LampSave)

Zoom Ratio1.1x

Native Aspect Ratio16:9

Rec. 709 Coverage88%

Input Lag16.7 ms (1080p 60Hz)

HDMI Inputs1 x HDMI 1.4a

Speaker10W

All 26 specifications

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Description

The BenQ TH575i is a high-brightness Full HD home theatre projector built for living rooms where ambient light can't always be controlled. With 3,800 ANSI lumens and DLP imaging, it throws a crisp, punchy 1080p picture up to 120 inches even with the curtains open, backed by dedicated Cinema, Sports, Game and 3D picture modes tuned for different types of content.

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

Built-in Google TV gives instant access to Netflix, Disney+, Prime Video and thousands of other apps without any extra streaming stick, while a 16.7ms input lag in Game mode keeps it responsive enough for casual console play. Auto vertical keystone correction and a 1.1x zoom make setup straightforward in typical room layouts.

A 10W built-in speaker, HDMI connectivity and a lamp life of up to 15,000 hours in LampSave mode round out a projector designed for everyday big-screen entertainment rather than a dedicated blackout cinema room.

Key features

3,800 ANSI Lumens

High brightness DLP engine delivers a clear, vivid 1080p image even in rooms with ambient light.

Built-in Google TV

Stream Netflix, Prime Video, Disney+ and more directly with no extra dongle required.

Low Input Lag Gaming

16.7ms input lag in Game mode keeps casual console gaming responsive.

Easy Setup

Auto vertical keystone and 1.1x zoom simplify projector placement for up to a 120-inch image.

Technical specifications

Choose a section to view its specifications.

Display (5)

Brightness: 3800 ANSI lumens
Native Aspect Ratio: 16:9
Resolution: Full HD (1920 x 1080)
Contrast Ratio: 15,000:1
Aspect Ratio: 16:9

Connectivity (4)

Input Lag: 16.7 ms (1080p 60Hz)
HDMI Inputs: 1 x HDMI 1.4a
White Light Output: 3,800 ANSI lumens
Connectivity: HDMI 1.4a (HDCP 1.4), USB Mini-B, RS-232

Audio (2)

Speaker: 10W
Audio: 10 W speaker, 3.5 mm audio out

Power & Physical (5)

Max Image Size: 120 inch
Power Consumption: 295 W typical
Weight: 2.3 kg
Dimensions: 296 x 236.8 x 120 mm
Dimensions (W x D x H): 296 x 236.8 x 120 mm

General (10)

Light Source Life: Up to 15,000 hrs (LampSave)
Zoom Ratio: 1.1x
Rec. 709 Coverage: 88%
Projection Technology: DLP
Light Source: Lamp, 6,000 hours normal / 10,000 hours SmartEco / 15,000 hours LampSave
Throw Ratio: 1.49 - 1.64:1
Zoom: 1.1x
Keystone Correction: Auto vertical ±40°
Smart Platform: Google TV (dongle supplied)
Noise Level: 34 dB normal, 29 dB eco

Throw distance guide

With its 1.49 to 1.64:1 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

3.3 m to 3.6 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	2.0 m to 2.2 m
80"	1.77 m × 1.00 m	2.6 m to 2.9 m
100"	2.21 m × 1.25 m	3.3 m to 3.6 m
120"	2.66 m × 1.49 m	4.0 m to 4.4 m
150"	3.32 m × 1.87 m	4.9 m to 5.4 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.

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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.

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Video Conferencing

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Professional Installation

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

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Your Configuration

BenQ TH575i Full HD 3,800-Lumen Google TV Projector × 1£445.88

Total£445.88

inc. VAT

Documents

BenQ TH575i user manual — BenQ published documentation (PDF)

Frequently asked questions

How bright is the TH575i, and will it work in a lit room?

It has a high-brightness DLP engine delivering 3,800 ANSI Lumens at 1080p, keeping the image clear and vivid even in rooms with ambient light.

How far from the screen does the TH575i need to be for a large image?

Its throw ratio is 1.49-1.64, and it supports images up to 120 inches. For a 100-inch 16:9 image (about 2.21m wide) that works out to roughly 3.3m to 3.6m from the screen.

How long does the lamp last on the TH575i?

The lamp is rated for up to 15,000 hours when using LampSave mode.

Does the TH575i have built-in streaming apps?

Yes, it has built-in Google TV (Android 11), so you can stream Netflix, Prime Video, Disney+ and more directly with no extra dongle required.

Is the TH575i suitable for casual gaming?

It has a 16.7ms input lag in Game mode at 1080p 60Hz, keeping casual console gaming responsive.

What warranty comes with the TH575i?

The TH575i comes with a 36-month (3 year) warranty.

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.

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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.

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