When JA suggested I review one of the "smaller" VMPS loudspeakers, I felt the hot breath of controversy in the air. The recent debate in these pages concerning the "proper" amount of bass required for true high-fidelity reproduction, and the inability of small loudspeakers (according to one camp) to provide it, hadn't yet cooled off, nor showed any sign of doing so. VMPS, a small West-Coast manufacturer most famous for its humongous Super Tower IIa/R (at 6-plus feet and 250 lbs per side, first reviewed for Stereophile by AHC in Vol.9 No.3 and the latest version of which is examined by JGH elsewhere in this issue), is hardly a fence-sitter in the debate; they are clearly pro-low-end response. I chose to request the Tower II/R, an upgraded version of the smallest of their floor-standing systems, for review; with a rated 3dB-down point of 22Hz (the same as their standard subwoofer), it's not exactly a member of the restrained bass brigade.
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.
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.
I am puzzled. No, really. I know you find it hard to believe that we sacerdotes of the golden-eared persuasion could ever be perplexed, but I have been pondering the imponderables of ports. Ever since the classic work of Richard Small and Neville Thiele in the early '70s showed how the low-frequency response of any box loudspeaker can be modeled as an electrical high-pass filter of some kind, with the relevant equations and data made available to all, there would seem to be very little reason why all loudspeakers with the same extension should not sound alike (or at least very similar) below 100Hz. Yet after reviewing 20 dynamic loudspeakers (and using 24) in the same room over the last seven months, I am led to the conclusion that speakers vary as much in the quality of their mid-to-upper bass as they do in any other region. A few are dry, more are exaggerated in this region; some are detailed and "fast," most are blurred, with the upper bass "slow" (by which I mean that the weight of bass tone seems to lag behind the leading edges of the sound).
So far, as part of my quest to find good affordable box loudspeakers, I have reviewed 16 models, in the August, October, and November 1987 issues of Stereophile (Vol.10 Nos.5, 7, & 8). This fourth group of loudspeakers expands the price range covered, down to $329/pair and up to $1349/pair, and includes one model from California (Nelson-Reed), one from Canada (Paradigm), and one, Monitor Audio's "flagship," the R952MD, from the UK.
Since the introduction of the original B&W 801 monitor loudspeaker in 1980, it has been adopted as a reference by several recording studios around the world, Over the past five years, I have seen 801s present in just about every recording session with which I have been artistically involved. While the original 801 monitor had its strong points, I was never satisfied with the detached and muddy-sounding bass, discontinuous driver balance, and low sensitivity. Unless this speaker was driven by an enormous solid-state power amplifier, with an elevated high-frequency response, the tubby and slow bass response often obliterated any detail in the two bottom octaves of musical material.
Since its founding just over ten years ago, Mission Electronics has grown to become one of the largest "real" hi-fi companies in the UK. Although their product line originally consisted of three relatively conventional loudspeakers, it rapidly grew to encompass high-end pre- and power amplifiers, cartridges, tonearms, and turntables, and, in the mid 1980s, a system concept based on CD replay and relatively inexpensive electronics: the Cyrus amplifiers and tuner.
The Ohm Walsh 5 displaces the Ohm F at the top of the Ohm line, and the current Walsh 5 production run represents a "limited edition" of 500 pairs worldwide. There's even a certificate of authenticity—hand-signed by Ohm Acoustics President John Strohbeen—packed with the speakers that makes it all official. I think that this is more than a clever marketing gesture and clearly demonstrates Ohm Acoustics' pride in their new flagship loudspeaker.
There is something especially exciting about a new loudspeaker design, if only because speakers are the component where one constantly hopes for the sonic miracle that will suddenly make it all sound real. No other component has the same overall impact in coloring the system, presents more room problems, or inspires more frustration on the road to the perfect system.
In the audio field, the British have traditionally thought "small," scoring hits both with their compact loudspeakers and with medium-priced amplifiers. The continued growth of the audiophile speaker market in the US, however, which favors larger loudspeakers, has at the same time stimulated the research and design of more powerful, excellent quality amplifiers. In their turn, these have placed increased demands on the speakers they drive.
The quest for a full-range electrostatic loudspeaker has occupied many engineers' minds for many years. The problems are manifold: large physical size (which can lead to room placement problems and poor dispersion), the difficulty of achieving high sound pressure levels, the need for a potentially sound-degrading step-up transformer, and the unsuitability for production-line manufacture. Even so, the potential rewards are so great that one can understand why loudspeaker designers keep on attempting the apparently impossible. Epoch-making models do appear at infrequent intervals, keeping the flame burning since the appearance of the original Quad in 1955: Acoustat, Sound Lab, and Beveridge in the US, Stax in Japan, Audiostatic in Holland, Quad, of course, in England, and now MartinLogan.
Irving M. "Bud" Fried, an early contributor to Stereophile, hails from the city of brotherly love, and I must confess to finding it difficult avoiding a few brotherly jabs at Mr. Fried's name: something like "this Bud's for you" would surely not escape deletion by our conscientious Editor. And what if I should happen to complain of a dried-up or "Fried" quality in the upper midsJA is bound to object to this breach of good taste. Well, having gotten that off my chest, you'd be interested to know that I consider it quite appropriate that someone from Phil-a-del-phia should be in love with transmission-line enclosures; the name is almost as convoluted as a trip down a folded line.
The Model R107 represents the flagship of KEF's Reference Series, and is second only to the Professional Series KM-1 in KEF's product line. Anatomically, the 107 resembles a person. Beneath a decorative "hat," there's a special head assembly akin to the head on the old Model R105. This head assembly contains the brains of the 107, namely a T33 ferrofluid-cooled tweeter and an improved version of the classic B110 midrange driver, featuring a better voice-coil and a new polypropylene cone. The nerve center is also here, in the form of two passive dividing networks and load-impedance equalizing network. Level equalization of the drivers is performed actively within the KUBE, the second brain of the 107—about which you'll hear more shortly.
"I am not in love; but I'm open to persuasion," sings Joan Armatrading in her song "Love and Affection," the track I was playing when I finally realized that my attempts to get a sound from the Apogee Caliper ribbon speakers approaching what I had heard at the 1986 Chicago CES were bearing fruit. And that sentence pretty much describes the creed of the professional audio critic. Each new product that arrives at your door could be the one to pass the J. Gordon Holt "goose-bump" test, to leave the hairs on your arms permanently erect. Did the Caliper full-range ribbons excite my previously quiescent nerve-endings? Did Bobby Ewing return from the dead? Did Sam propose to Diane? Will Alan Alda ever outgrow Hawkeye? What on Earth made Georgette marry Ted Baxter? Why can't Tubbs roll up his jacket sleeves like Crockett? How could a fine actor like Jack Klugman accept such a dreadful role? Some of these questions will be answered overleaf, but in the meantime, what is a ribbon speaker?
Whenever I think of cone speaker systems, I think of three brand names: Snell, Thiel, and Vandersteen. There are many good loudspeakers and many good designers and manufacturers, but it is these three who, in my opinion, consistently produce the best cone loudspeaker systems. All three companies produce full-range systems, transparent systems, and systems which mate well with a wide range of equipment. Their systems can be owned and enjoyed for years. Long after some fad or special feature has given a competing designer brief notoriety, these are the products you turn back to for music.