Floor Loudspeaker Reviews

One of my formative audiophile experiences was the first time I heard electrostatic speakers. I walked into an audio store and heard music played by a live jazz combo. But where were the musicians? I saw none, though I did notice a couple of room-divider panels in the part of the store where the music seemed to be coming from. Eventually, it dawned on me that these must be loudspeakers—but they sounded like no other speakers I'd ever heard, and nothing like the Advents I had at home.

The Jadis Eurythmie speakers ($37,000/pair) arrived in a multitude of oversized boxes. Importer Northstar Leading the Way's Frank Garbie dragged them into our downstairs lobby and broke them open, elevatoring the individual modules up to our door. This happened on one of my office days, but Kathleen pushed me out the door in the morning with a "Don't worry cherie, I can handle it..." She phoned in periodic updates on Garbie's progress. Remember that old Stan Freberg routine? "I got it, I got it...I don't got it!" I arrived home just in time to hook up the amps.

According to designer Bill Reed, the Nelson-Reed 8-04/B was not originally intended to be an audiophile speaker system, but was instead designed as a high-quality monitor for the critical recording engineer who wanted to be able to walk from the studio into the control room and hear the same thing from his speakers that he heard "live." The fact that modern studio mike technique ensures that this could never happen is probably beside the point. The point is that reproducing the original power and dynamic range of live music is a formidable challenge, which practically no audiophile speakers have met successfully. On the other hand, so-called studio monitors, which can do that routinely, have tended to be highly colored and otherwise generally lousy in all areas of fidelity except output capability. The 8-04/B was an attempt to combine the strengths of both kinds of speaker, while avoiding their usual weaknesses.

We've all read about how bookstores, appliance stores, and other bricks-and-mortar retailers are suffering with the increasing domination of Internet sales. That got me thinking about audio dealers. I've always believed that one can't really make an informed purchase of audiophile equipment without hearing it in a system properly set up by and at at a serious audio retailer. Here in New York City, we're blessed with six first-rate audio dealers in Manhattan alone, with more in the suburbs. I estimate that 90% of the products reviewed in Stereophile can be auditioned at a dealer or two within a two-hour drive of anywhere in the New York metropolitan area.

It was three or four years ago, at a CEDIA Expo, that I first happened upon Advanced Dynamic Audio Monitors, aka ADAM Audio. What grabbed me was the array of imposingly high-tech speakers comprising their elite Tensor line. Sitting out in the middle of the floor of the Atlanta Convention Center, they not only looked more advanced than anything else around, they had the audacity to sound superb in a totally inappropriate acoustic situation. Despite the surrounding busyness of the Expo, I was able to sit down and actually enjoy the Beatles' Love on DVD-Audio. Clearly, these guys knew what they were doing. I vowed to follow up on it.

The phenomenon of the "singing flame" has been known since the 19th century. Place electrodes either side of a flame and, if you apply a high enough audio-modulated voltage to those electrodes, the ionized particles in the flame will cause it to emit sound. (Search YouTube for "singing flame" and you'll find many examples.) This principle was developed into a practical loudspeaker in 1946 by a French inventor, Siegfried Klein, who confined an RF-modulated arc to a small quartz tube, coupled it to a horn, and called the resulting speaker the Ionophone. An intense radio-frequency electrical field ionizes the air between inner and outer electrodes to produce a distinctive, violet-tinged yellow flame in the quartz combustion chamber. When the RF field is modulated by the audio signal, this causes the almost massless ionized flame to expand and contract in what should be a perfectly pistonic manner.

In March 2006 I wrote a very favorable review of Monitor Audio's Silver RS6 loudspeaker. At the time, I felt this $999/pair, small-footprint floorstander produced the greatest sound quality per dollar of any speaker I'd heard. Despite the proliferation of affordable speakers of increasing quality I've heard since then, I remained particularly impressed by the Silver RS6's clarity and lack of coloration and the speed of its midbass, all of which continued to exceed the performance of any other affordable speaker I've heard.

PSB is a small, Toronto-based manufacturer that has been collaborating with Canada's National Research Council to try and take some of the guesswork, some would say magic, out of loudspeaker design.

The NRC, financed by the Canadian government, does basic research in many technological areas and makes its findings available to any firm wishing to use them. (Most other countries provide or encourage this kind of government/business cooperation. It is against the law in the US, to our great disadvantage.) The NRC's audio division, headed by physicist Dr. Floyd E. Toole, has devoted the last several years to the rather formidable task of defining, and assigning numbers to, the various aspects of loudspeaker performance that affect listeners' subjective assessments of their sound.

I gasped. An almost perfect 300Hz squarewave had appeared on the oscilloscope screen—something I had never before seen from a loudspeaker.

It was the spring of 1982. John Crabbe, then editor of the British magazine Hi-Fi News & Record Review, and I had driven up to Quad's factory in Huntingdon, England. The ESL-63 electrostatic loudspeaker had been launched the previous summer, and we were to interview its designer, Peter J. Walker, for an article that would appear in the July 1982 issue of HFN/RR. Peter set up a pair of ESL-63s on wooden kitchen chairs, fed one of them a 300Hz squarewave, casually placed a mike before it, and showed us the result on the 'scope. "Of course, why should a speaker being able to reproduce a squarewave matter at all, hmmm?" he rhetorically asked us.

Take a casual look at the Mk.II edition of MBL's Reference 101E Radialstrahler loudspeaker, and you won't immediately see what's new compared with the original version, which I reviewed in October 2004. But the Mk.II has a shorter, sleeker bass cabinet, designed to, among other things, slightly lower the stack of omnidirectional drivers it supports. While the many other major revisions to this familiar and fascinating loudspeaker can't be seen, it's fair to say that, from the ground up, the Reference 101E Mk.II is a new loudspeaker in design, if not in concept.