- Is the LS901-4K bright enough for a room with windows?
- Yes. At 5,500 ANSI lumens it is much brighter than most home theater projectors, so it stays usable with some ambient light. In a dark room you will likely run it in a lower brightness mode.
- Does it support 3D?
- No. The LS901-4K does not support 3D playback, unlike some competing home projectors.
- How long does the laser light source last?
- ViewSonic rates the laser for roughly 20,000 to 30,000 hours depending on mode, far longer than a lamp. Brightness slowly declines over that life rather than failing suddenly.
- Can I place it off-center from the screen?
- Only partly. It has vertical keystone correction but no horizontal lens shift, so a centered position is best. Large horizontal offsets will distort the image.
- What inputs does it have?
- It offers HDMI, VGA, RS-232 and USB-A, plus a 3.5mm audio output and a 12V trigger. There is no 3D sync port.
- Does it have built-in speakers?
- Yes, it has built-in speakers for basic use. For a home theater, external audio through the 3.5mm output or an AV receiver is the better choice.
- Where is the Viewsonic 4K UHD Laser Home Theater Projector LS901-4K cheapest?
- At Newegg, for $2,254.99, as of our latest check.
- Where can I buy the Viewsonic 4K UHD Laser Home Theater Projector LS901-4K?
- 7 stores we checked sell it, including Newegg, Best Buy, Staples, Adorama, Office Depot.