In order to achieve a larger display while maintaining adequate brightness for the HDR10+ specification, the LSP9T needs a more powerful light source; the LSP7T is rated for 2,200 ANSI Lumens compared to the 2,800 of the more expensive model — the latter being the first HDR10+ certified projector on the market.
Image quality aside, the projector comes in a compact form factor that includes built-in speakers with surround sound virtualization, allowing it to (attempt to) replicate the surround effects you’d get from a proper multi-speaker setup.
It also comes with the Tizen software used throughout Samsung’s TVs, which is a big upgrade over what’s available on most other projectors, and the laser-based lamp should ensure longevity over the bulbs in traditional projectors.
On the other hand, it still does seem expensive, considering the excellent VAVA 4K projector claims 2,500 ANSI lumens at $2,800 retail; cheaper than either model.