Ask S&V

Q Will I damage a stereo amplifier by using it to amplify only one channel—in this case, my system’s center speaker?—Richard Regan

Q I’m planning on buying an Epson 5030UB projector. My sofa will be 14.5 feet from the screen. The room has controllable dimmers, and there will be some room light when I watch games. What screen size and type would you recommend? — Lou Gutierrez / via e-mail

Q I have owned receivers from Onkyo, Pioneer and Yamaha. With each one, the sound always seemed muddy after I used the auto-calibration function for speaker setup. In my experience, I get much better sound when setting all speaker crossovers to 200 Hz, or the highest available setting. Expert opinions I’ve read on the subject say this is wrong, though I’ve adjusted two friends’ systems in this way and they agree with me that the sound is better. Am I correct? —David Bone

Q I have a fairly large collection of CDs, all of which have been ripped to lossless WMA format. I’ve come across plenty of discussion of DACs while researching music servers, but I’m confused about why I would need one since I can already listen to digital music files, either through my computer speakers or headphones. Doesn’t that mean what I’m hearing is already in analog form? If so, what need is there to convert it to anything else? —Bill Begg / via e-mail

Q What processes what in the video chain? Say you have an Oppo Blu-ray player hooked up to a good AVR that’s hooked up to an Epson 5030 projector. Does each do its own thing? Or do you need to turn some types of processing off while leaving others enabled? Also, what is the meaning of life? —Jeff Riddick / via e-mail

Q I am in the market for a new home theater receiver and have a dilemma. My wife is hearing impaired and has trouble hearing the TV sound. We have tried a few infrared wireless headphone solutions and have been very disappointed by the poor sound quality. I am looking for a system that will allow me to hook up a separate set of headphones to run simultaneously with the TV sound. Is this possible? —John Bott / via e-mail

Q I bought a Benq W1070 projector and plan to install it in my 22-foot long by 18-foot wide by 8.5-foot high basement. The room was pre-wired by the previous owner and there’s a ceiling mount with an electric outlet close to it. The mount is about 16 feet away from the front wall. Is that too far for this projector? I was originally planning to buy a 120 inch screen, but it appears that I would need at least a 150 to 170 inch screen for that distance.—Srikanth Athipatla