Q I’ve owned my Panasonic plasma TV for seven years but am now wondering about its life expectancy. Refresh rate, viewing angle, and, in particular, aspect ratio control are major concerns for my next TV. Can any of the latest TVs display a constant aspect ratio regardless of signal source? —Joe Nagy / via e-mail
Q I’ve heard that sealed subwoofers sound better than ported ones with music, but that ported subs handle LFE in movie soundtracks better. I want a sub that will sound good in my large, open living room with both music and movies. Do people only use sealed subs in smaller rooms? How will a ported model sound different when playing music?—Matt Carlton
Q I don't have room for a surround setup in my home theater, so I’ve decided to buy a pair of floorstanding tower speakers. My TV has a super-wide viewing angle. Are there any speakers with a super-wide listening angle? I don't want to be the only person in my family sitting in the "sweet spot.” —Edward G. Jones
A I own an Integra DTR-40.6 AV receiver that is capable of playing Hi-Resolution Audio (HRA). Here’s what I want to know: If I were to upgrade my Pandora or Spotify account to stream HRA, would I be able to listen to it using the Pandora or Spotify app built into the receiver? My internet service plan is 50-Mbps FIOS, and I have the receiver connected to my router with an Ethernet cable. &Tony Held / via e-mail
Q I am planning an upgrade to Panasonic DP-UB9000 Ultra HD Blu-ray player. Can I can connect the player’s 7.1 analog output to my Yamaha AVR’s multichannel input (like I currently do with my Oppo player) and hear Atmos/DTS:X? —Rick Poage, Fairfax, VA
Q Are there any standalone surround preamp/processors that decode Dolby Atmos? I’m interested in a unit that doesn’t include an AM/FM radio tuner. —Doc Lockett
Q I am switching over from a 5.1 speaker system to a soundbar but would still like to use my current Paradigm PW 2500 subwoofer with it. Are there any new soundbars that can be used with an existing powered sub? —John Rothery / Tacoma, WA
Q I’ve got a decent Velodyne subwoofer that I’d like to connect to a powered soundbar. Most soundbar manufacturers now use wireless subwoofer connections, however, so I’m struggling to find one that’s capable of connecting with my sub. Could you recommend a mid-level or a high-end soundbar that features a hardwired subwoofer output? —Jim O’Hara, via email
Q I don’t even know what to call it, but I'm looking for a reasonably priced device ($150 or less) with enough watts to drive a small pair of two-way speakers that’s also internet-enabled and capable of playing back Pandora, Spotify, and iTunes (not Apple Music) tracks from my iPhone. Can you make a recommendation? —Scott Oakley, Pine, AZ
Q I'm big into home theater and computers, hobbies that naturally consume lots of electricity. Now that my AV receiver and TV are both due for replacement, I'm hoping you can recommend “green” products that will give me the same great experience, but without the ding on my energy bill and the planet. —Justin Nealis