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A recent survey in the AVS Forum about choosing between a flat screen TV and a projector rang a few bells for me. Having just acquired a 65-inch OLED as my reference display, and having recently completed reviews of three new projectors (with a fourth now underway), it’s not a decision I have to wrestle with. For what I do, I need both. But many of you, at one time or another, may have to choose. And with Black Friday (or Cyber Monday) barreling toward us you can use all the information you can get.

Most will choose the flat screen Ultra HDTV. And they’ll inevitably buy an Ultra HD set rather than 1080p HD because the time’s now long past when you can find a good 65-inch or larger set that isn’t Ultra HD. And for a home theater, where movies are king, a 65-incher is likely what you’re looking for...

It's perplexing, that's what it is. In fact, it is a riddle, wrapped in a mystery, inside an enigma — that sound in Havana that is said to have sickened or deafened diplomats there. No one can explain what it is. Here — you listen to it, and see if you can identify it.

Voice-activated speakers are hitting the market hot and heavy with everyone vying to be the only system you’ll invest in. Amazon is hoping you’ll pick Alexa, and Cortana is hoping to get some traction in the market. Once you’re a Google family, odds are you’ll stay there. To that end, JBL just released a new line of Google Assistant voice-activated speakers, and the LINK 20 is the perfect balance of features, sound quality, and portability. Yup — that’s right — a voice-assistant that’s not only portable, it’s waterproof too so it can go anywhere.

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Q After a lull of many years, I’m now in the market for a new audio system and plan to buy high-quality tower speakers and a good amplifier. Here’s my question: How do I deliver an audio signal to passive speakers using just an amp and no preamp or receiver? I’ve become accustomed to the convenience of music-streaming apps like Pandora and don’t want my new system to be unnecessarily complicated. —Gary Barnett / via e-mail