Floor Loudspeaker Reviews

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.

Danish manufacturer GamuT Audio's patchy history in the US includes a succession of distributors that failed to establish the brand here. But in 2014 GamuT tapped Michael Vamos to spearhead their own US-based distribution company, which is now energetically promoting the company's products. That change coincided with my auditioning, at the 2014 Rocky Mountain Audio Fest, of GamuT's two-and-a-half-way RS5 tower loudspeaker ($31,900/pair). I was sufficiently impressed that I asked to review it—but then, at the 2015 Consumer Electronics Show, I experienced the RS7. This was the GamuT speaker I wanted to spend some time with, and at the end of March, GamuT's R&D manager, Benno Meldgaard, joined Michael Vamos in setting up a pair of RS7s in my listening room.

Whenever anyone marvels at the enormous Genesis II.5 loudspeakers in my house, I'm quick to tell them that the II.5 is the smallest, least expensive loudspeaker made by Genesis Technologies. In fact, the company makes two larger speaker systems, the $33,000 Genesis II and the $70,000 Genesis I (footnote 1).

The loudspeaker designer's art has changed radically over the past 20 years. Although the goals are largely the same, today's designer employs tools and techniques unimaginable two decades ago. Computer modeling, powerful and affordable FFT machines, and sophisticated new driver technologies are just a few of the advantages enjoyed by the modern designer. The high-tech result is a vastly better loudspeaker—even inexpensive products today are significantly better than those of even five years ago, never mind 20.

The new Genesis III loudspeaker shows just how sophisticated the designer's art has become. The Genesis III is as far removed from the cones-in-boxes loudspeakers of yesterday as a Ford Taurus is from a Pinto. Combining a radically different cabinet with unusual custom drive-units, the Genesis III is a paradigm of how high technology has transformed loudspeaker design.

I reviewed GoldenEar Technology's first speaker, the Triton Two ($2999.98; all prices per pair), in February 2012. It was and is an outstandingly good speaker, but I thought then that if GoldenEar would apply the same expertise to the design of a speaker with fewer cost constraints, the results could be better still. Sandy Gross, president and CEO of GoldenEar, must have been thinking along similar lines when he named the speaker Triton Two, leaving One for a more ambitious future product.

Gross is about to play an excerpt from a recording of John Rutter's Requiem. It's a piece that challenges just about every aspect of sound reproduction: there's an orchestra, a soprano soloist, a chorus, a pipe organ, and the acoustics of a large concert hall. Wimpy speakers need not apply. I listen, expecting to be underwhelmed.

Whoa! The low bass of the organ so fills the room that I look for subwoofers in the corners. The orchestra and chorus have great presence. There's a believable sense of space. These are some speakers! How much?

A clever engineer with an interest in home audio says that the real obstacle to high-fidelity sound is the adverse and unpredictable way in which speakers interact with most domestic rooms. To address that need, he brings to market a loudspeaker that disperses sound in a new and original way. Controversy ensues. Controversy endures.