That's actually part of it. A really-good cone-tweeter can usually deliver great sound at higher levels without taking your head off, and yet, they don't need much volume to shine. It's a real-world sweet spot, you know? That's one of the things I love about the cone tweets in my W90's. Today's high-quality soft-dome-type tweeters have awesome dispersion and excellent extension. Still, there's something soft and airy about the best cone-tweeters from the '60's and early '70's that I really-like. The Jensen P35-VAH, when used in pairs, can sound VERY-smooth and airy, and Bozak's aluminum cone-tweets are legendary.
For older music, which makes up a large majority of my collection, a good cone-tweeter is just the thing. My modern Denton reissues have really-nice textile domes, and while they have a really, really-nice sound, it just isn't the same. Doesn't sound anywhere near as "at home" as the older Wharfedales do with their Super 3's. For something like CSNY's "Deja Vu" or something like that, forget about it. Give me my Super 3's (That album is heaven through a pair of W90's). They have a more-natural sound to me than the modern domes I've heard, though I do like certain ones an awful lot.
You heard the Super 3's, dc270, so you understand what I'm talking about. Those phenolic jobbers have a similar kind of homey familiarity with older music. That's one of the qualities I tend to look for when I'm speaker-shopping. With older music taking up so much space in my collection, I kind of have to. There are actually quite a few very-large, very-awesome TOTL speakers out there with plain old cone-tweeters. The biggest models often have multiple cone-tweeters, which can really be something, just like the Super 3 pairs in each of my W90's and the aluminum cone-tweets (8 of them in a linear array) in the Bozak Concert Grand and Symphony models. The W90 has a Super 3 cone at the outer-left and outer-right of the cab, with a pair of 5.25" cone midwoofers in the middle, and this creates a very-wide, spacious soundstage that really-fills a room. Plus, with one at each end of the cabinet, you don't have to worry about mirror-imaging because the model is already mirror-imaged by design.
Which of the Marantz Imperial models is generally-considered the best? I was never sure if the biggest, most-expensive model was the best one, and I always thought those Imperial models looked great.