Floor Loudspeaker Reviews

I reviewed JMlab's Mezzo Utopia loudspeaker in the July 1999 Stereophile (Vol.22 No.7). By chance, the Mezzos had followed a pair of B&W Nautilus 801s into my listening room, and the substitution had proved rather interesting. For all their many fine qualities, the 801, with its 15" bass driver, was distinctly bass-heavy in my room, whereas the 11" drivers of the Mezzos seemed just right in this regard.

A science-fiction parable I read too many years ago to remember who wrote it used the image of a glass jar stuffed with colored plastic spheres. The story's protagonist was asked whether the glass was full. "Of course," was his reply, whereupon a hidden faucet was turned, the jar filled up with water, and fish swam in the spaces between the balls.

If anyone can be said to be the guru of the transmission line, that would have to be Irving M. "Bud" Fried. He has been promoting the design for years now, first with the made-in-England IMF designs, later with the designs of Fried Products, made right here in the US of A. He has long been convinced of the basic superiority of the design, and still uses it in his top-of-the-line systems. But true transmission lines are invariably big, heavy, hard to build, and, for all of those reasons, expensive. Essentially, they involve a long, convoluted, heavily damped tunnel behind the bass driver which channels the back wave to the outside world. The length and cross-sectional area of the tunnel are of some importance, although the technical basis for the transmission line, as applied to a loudspeaker enclosure, has never been firmly nailed down. Certainly there is no mathematical model for the transmission line as complete as that developed over the past two decades for the sealed or ported box (footnote 1).

But Bud Fried has clung to the transmission line, for all of its complexities. In order to bring at least some of its touted advantages to a lower price point, he had to come up with a variation which would work in a smaller enclosure. That variation was the "line tunnel," which, according to Fried, originated in an early-1970s Ferrograph (a British company specializing in tape recorders) monitor which was later adapted by IMF. Basically it consists of a short (compared with a transmission line) duct from the inside to the outside of the heavily damped enclosure. The duct is designed with approximately the same cross-sectional area as the loudspeaker cone.

Although it was founded by ex-Siemens loudspeaker engineer Oliver Göbel in 2003, I am embarrassed to admit that I had never heard of Göbel High End until I visited the room hosted by Florida retailer Bending Wave at the 2019 AXPONA. There, I listened to the German manufacturer's ginormous $220,000/pair Divin Noblesse loudspeakers, which were making their US debut. I was impressed by what I heard. I was interested, therefore, to learn that Göbel was introducing a smaller Divin model, the Marquis, which would not be too large for my listening room and would be priced at $80,000/pair.

Genesis Advanced Technologies was formed in 1991 to manufacture loudspeakers designed by industry veteran Arnie Nudell, who was responsible, with Cary Christie, for some of high-end audio's highest-performing models when both were at Infinity Systems. The company was acquired a few years back by Gary Leonard Koh and some of his friends, but Nudell remains with the company as Chief Scientist and the company has offices and a production facility in Seattle.

In Stereophile's "Recommended Components," most full-range Class A speakers—and even some in Class B—are behemoths. Some are tall, some are wide, some are deep, and some are just plain big. Most of us would find such no-compromise devices physically imposing and visually distracting in our listening rooms. Putting aside the infamous "Spousal Acceptance Factor," how can you ignore such speakers' presence and concentrate on the music?

At last January's Consumer Electronics Show, one of the more musically satisfying rooms I visited in Las Vegas' Alexis Park Hotel was hosted by Canadian magazine Inner Ear Report. I had visited the room ostensibly to take a look at the Audiophile APS AC regeneration system, but I also wanted to give a listen to the Gershman Acoustics Opera Sauvage speakers that I had agreed to review for Stereophile—not just the speakers in the abstract, but the very samples that, after CES, were going to make the trek to my Brooklyn listening room.