One person wrote recently that he was looking at three fixed-frame projector screens. All of them white, all of them the same size. One was $1800, one was $1200, and one was $600. Is there really any difference between them, or is it all just marketing?

I’m in the interesting position of telling you how to do something with a subwoofer that you shouldn’t do. No, it’s not illegal. But in the ears of those for whom sound quality is more important than ergonomics, décor, and/or domestic tranquility, it’s definitely heretical.

What’s the best location for my subwoofer? Like many things in life, subwoofer placement often involves compromise, and is typically driven by competing variables like décor and visual impact considerations, available floor space, and of course optimal sound quality.

Subwoofer design has undergone a revolution. No, the physics of woofers, amplifiers, and enclosures haven’t changed. But new technologies have made it possible to push the bass-ic laws of nature to their limits, such that the best of today’s inexpensive subwoofers can outperform many of the top models from 15 or 20 years ago.

HDBaseT™ is a technology that delivers high-definition video, audio, Ethernet networking, control signals, and power over a single Category 5E or Category 6 computer networking cable. The technology is meant to be used with consumer electronics and home theater equipment, and has a few benefits that are not offered by other types of connections. The initial version of the specification was announced in June 2010, and uses High-Definition Multimedia Interface (HDMI) signals over a network cable.

Question: Do you have any idea why the colors of an InFocus projector have turned green-blue (or rather lost red) after only 250 hours? Is this an indication of lamp aging?