ViewSonic LSC731WU-ST 7,300 ANSI Lumens WUXGA Short Throw Laser Installation Projector
- In UK stock, ships from the UK
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
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Description
The LSC731WU-ST is the short-throw variant of ViewSonic's LSC731WU, using 3LCD imaging and 2nd generation laser phosphor light source to deliver 7,300 ANSI lumens and a 3,000,000:1 contrast ratio at native WUXGA (1920x1200) resolution, scaling up to 300". A 0.679-0.821 short-throw ratio suits confined installation spaces, and a 1.2x optical zoom with horizontal/vertical lens shift and ±15°/±10° keystone correction (plus ±10° auto vertical keystone) give flexibility across boardrooms and Microsoft Teams Rooms-optimised 21:9 layouts, backed by 360-degree projection support. Connectivity includes dual HDMI, a computer input, HDBaseT, RJ45 LAN and RS232, with Crestron and Q-SYS certification and compatibility for AMX, PJ Link, ATEN and Extron systems. A light source rated for up to 30,000 hours keeps this short-throw model low-maintenance for long-term commercial use.
Key features
0.679-0.821 throw ratio 3LCD projector for confined spaces.
Aspect ratio optimised for modern collaboration spaces.
1.2x optical zoom with automatic vertical keystone correction.
Also compatible with AMX, PJ Link, ATEN and Extron.
Technical specifications
Throw distance guide
With its 0.679–0.821:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:10 image sizes. Try our throw distance calculator for your exact room.
| Image size | Image dimensions | Lens distance range |
|---|---|---|
| 60" | 1.29 m × 0.81 m | 0.9 m – 1.1 m |
| 80" | 1.72 m × 1.08 m | 1.2 m – 1.4 m |
| 100" | 2.15 m × 1.35 m | 1.5 m – 1.8 m |
| 120" | 2.58 m × 1.62 m | 1.8 m – 2.1 m |
| 150" | 3.23 m × 2.02 m | 2.2 m – 2.7 m |
Planning from a real wall? Use the projector room planner to upload a photo, preview the image to scale and find projectors that fit within your maximum available space.
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.
Frequently asked questions
How close to the screen can the LSC731WU-ST sit?
Its short-throw ratio of 0.679-0.821 means for a 100-inch WUXGA (16:10) image (about 2.15m wide) it needs to sit roughly 1.46m to 1.77m away, scaling up to a maximum image size of 300 inches.
How bright is the LSC731WU-ST?
It delivers 7,300 ANSI lumens (8,300 lumens centre) at native WUXGA resolution with a 3,000,000:1 contrast ratio.
How long does the LSC731WU-ST's light source last?
Its 2nd-generation laser phosphor source is rated for up to 20,000 hours in Normal mode and 30,000 hours in Eco mode.
Is the LSC731WU-ST suited to Microsoft Teams Rooms?
Yes, it includes a 21:9 Teams Rooms mode, an aspect ratio optimised for modern collaboration spaces.
What control system integration does the LSC731WU-ST support?
It's Crestron and Q-SYS certified, and also compatible with AMX, PJ Link, ATEN and Extron systems.
What warranty and delivery timeline apply to the LSC731WU-ST?
It carries a 3-year (36-month) warranty. It's in stock at TopAV, so dispatch is within 2 working days.
Delivery & returns
Estimated delivery 29 Aug - 2 Sept. UK mainland delivery only — some large or made-to-order items may carry longer lead times.
Unused items in original packaging can be returned within 14 days of delivery. Faulty items are covered under manufacturer warranty.
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.
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 — no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
Need help specifying this for your space?
Ask Andrew — he knows the full catalogue and can advise on installation, mounting and compatible AV systems.