Note the complete absence of the usual technical information about the design or construction of the coaxial driver or about the crossover frequency and slope. Missing, too, are performance specifications for frequency response, sound-pressure level, and distortion. That disappoints me because I like numbers, but all the really interesting stuff about these speakers-though expressed without as many numbers as I'd wish-can be found on the Technics website. These include: what Technics calls "Acoustic Solitude Construction," which isolates the electronics from the loudspeakers structurally and spatially; "Model Based Diaphragm Control," which adjusts diaphragm movement in real time; and "Space Tune," which includes four acoustical presets and two levels of measurement-based room correction. In this review, I will weave that information into my own observations.
The CX700 wireless speaker system embodies two important trends in 21st century loudspeaker design. The first is the use of a coaxial driver. The concept is not new; it dates to the massive Tannoy Dual Concentric and Altec Lansing 604 Super Duplex Concentric drivers of the mid-20th century, but those were pretty much sui generis, heroic designs that did not trickle down to the market's lower reaches. It took advances in materials science and engineering to arrive at the sophisticated coaxial drivers becoming popular today. One of these drivers is the basis of Technics's passive loudspeakers, including these.
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Philharmonic Audio BMR Monitor
Let's get this out of the way: The BMR Monitor may be a monitor, but it isn't a bookshelf or desktop speaker any more than a yacht is a dinghy.
Technics SC-CX700 ACTIVE LOUDSPEAKER
The usual Specifications box (below) is a nuts-and-bolts listing of the electrical and physical properties of the Technics SC-CX700 loudspeaker, who made it and where, and a widely varying amount of information about their electrical and acoustical performance. The information comes from the included literature, available downloads, and whatever I could find on the manufacturer's website.
Youth movement
Paul Klipsch was a genius,” Roy Delgado told me recently, with the sound of genuine amazement in his voice. “Me, I’m just a tinkerer.”
The Loricraft PRC6i record cleaning machine and the WallySkater v2.1 Pro
In my last Spin Doctor column, I gave an overview of my experiences cleaning records over the last 50-plus years and the advances in record cleaning technology over that time. My review of the HumminGuru NOVA ultrasonic record cleaner focused on that increasingly popular approach to record cleaning, using ultrasonic cavitation instead of scrub# the record with a brush. But if there’s one thing I’ve learned in that half-century of playing around with audio gear, it’s that it can be a mistake to embrace a new technology just because of its newness, dismissing what came before as obsolete. The vinyl record itself is a good example of a technology discarded as obsolete, then embraced again by new (and old) generations. You can add vacuum-tube amplifiers, analog tape, and much else in our hobby to that list.
Wattson Audio Madison LE Streamer
After it was delivered, I weighed the box containing Wattson Audio's DAC-equipped Madison LE Streamer on my bathroom scale.
Grimm Audio LS1c ACTIVE LOUDSPEAKER SYSTEM
It's not unusual for audiophiles to have fond childhood recollections of the old family stereo, but Eelco Grimm's memory of his dad's audio system probably stands alone.
Cambridge EXN100 STREAMING D/A PROCESSOR
Each soloist seemed to pop out to the front, between the two speakers (of course), their life force emerging over decades, grooves, and digital bits.
J.Sikora Standard Max Supreme, KV9 Max Zirconium
In his review of the J.Sikora Initial turntable, Stereophile's resident artist/sage Herb Reichert wrote, \"Extended bathing, lighting candles, making tea, and preparing food are ritual work forms that prepare my senses to accept both pleasure and illumination.\"
The Voxativ Hagen2 Monitor loudspeaker
I think I just found the perfect Herb speaker. It uses a hand-crafted 5\" wide-range driver with a cone made from Japanese calligraphy paper. It rolls off around 50Hz at the bottom and 30kHz at the top. It has no crossover. Its cabinet is made of MDF that responds loudly when I tap it with my fingernails. Inside is what its designer calls a “short horn,” which appears to harmlessly disperse back-cone energy while adding energy below the driver’s cutoff frequency. Mainly, though, it’s a perfect Herb speaker because it is naturally phase coherent. And sparkplug fast. And completely unmuffled.
The Beatles in Mono according to Kevin
It's almost too easy to make Dave Dexter Jr. the villain in the story of the Beatles' fumbled introduction to America.
