John Atkinson

Definitely one of my two best sounds at Axpona, along with the BAT-Scaena room, was the Orion 4 dipole speaker (from $14,750/pair with analog line-level crossover), designed by Siegfried Linkwitz and with custom enclosures made by Wood Artistry. Quad-amped with two Bryston 9B four-channel amplifiers, a Pass Labs preamp, and a Marantz CD player, the "William Tell" section from Shostakovich's Symphony 15 had superb dynamic range, with a "quiet" quality that seemed like there was a lower level of spurious behavior from the room. This allowed a wealth of detail to be perceived even when the music was itself quiet.

Each Orion 4 weighs 85 lbs and uses five SEAS drive-units: two soft-dome tweeters, a magnesium-cone midrange unit, and two long-throw 10" woofers especially developed by SEAS for the open-baffle loading used by Linkwitz. The crossover frequencies are 90Hz and 1440Hz and the tweeters, the midrange unit, and each woofer are driven independently, though the woofers can be paralleled to allow tri-amping if only six amplifier channels are available.

You can see here the dipole nature of the Orion 4, with the rear-firing tweeter, the back of the midrange unit, and one of the woofers.

Though I have shown in the photo the prototype of the new BAT P1 phono cartridge, developed by Peter Lederman but with a feature unique to BAT that is said to reduce stylus jitter, the star of this large room was the pair of Scaena line-source speakers ($66,000/system) that were driven by BAT's new Rex tubed amplifier ($15,000, used here bridged for mono) but also proved unphotographable (at least by me). (You can find Jason Serinus' photo of the speaker at the 2010 Axpona here.)

The rest of the system included a Silver Circle Pure Audio 5.0 AC conditioner, Kubula-Sosna Master Reference cables, Critical Mass Systems stands, BAT VK-P10 phono preamp, BAT Rex line stage, Scaena subwoofers, and a Spiral Groove SG-2 turntable and Centroid tonearm. Listening to Marc Cohn's "Riding on a Ghost Train" and Miles Davis's "So What" from LP, it was though I were hearing these familiar pieces for the first time. There was a stability to the high frequencies, a clarity to the midrange, a depth to the low frequencies, that thrilled.

I wasn't surprised to see that Channel D was featuring Joseph Audio Pulsar two-way stand-mount speakers ($7000/pair) in their room. My experience of the Pulsar at Shows is that it offers more bass than you'd expect from its size, with an uncolored, naturally balanced midrange. But I was surprised that it was Jeff Joseph himself, seen here seated at the computer, who was demonstrating Channel D's Pure Music program. (Channel D's Rob Robinson, who was doing the dems of the Pure Vinyl LP-"ripping" program, can be seen standing second from the left.) The rest of the system in this room included. . .

The Kingsound full-range electrostatics have been hits of recent Shows. At Axpona, Roger DuNaier was demming the latest version of the King II ($11,500/pair), which was driven by VAC's Statement tube amplification via Cardas Clear cable to great effect on Jane Monheit's "Somewhere Over the Rainbow." Her voice had that palpable presence that you only seem to get with panel speakers. I photographed Roger with the rear of the speaker, so you can see the King II's field-serviceable modular construction. There are seven full-range modules and three narrower tweeter modules and the corssover and HT supply is now housed in a separate enclosure, connected with industrial-quality, secure connectors.

Sonist's Randy Bankert was about to grab some lunch when I stopped by his room on the last day of the Show, but he graciously stayed on to explain what was new about the Concerto 4 speaker ($5895/pair). Art Dudley had reviewed the earler Concerto 3 a couple of years back and described it as coming close "to being the one true, affordable, all-around satisfying choice among the SET-friendly loudspeakers with which I'm familiar." I had found some cabinet resonant problems, however, which Randy had fixed by the time I auditioned the Concerto 3 at the 2010 Axpoina in Jacksonville. The new speaker uses two paper-cone woofers rather than one with the same ribbon tweeter and solid poplar front baffle, and boasts a claimed 97dB sensitivity. This allowed the Concerto 4 to fill the Atlanta room (sensibly treated with Real Traps) with sound with just 5Wpc from the EL84-fitted Glow Audio Amp One ($648). Source was a Cary CAD306 SACD player.

Although in many ways Atlanta's Sheraton Downtown was ideally suited for an audio show—many large rooms; high ceilings—its rambling layout mean that some rooms were hard to find. I wouldn't have come across the second-floor room being shared by Carnegie Acoustics and Leon Speakers if I hadn't bumped into Danny Richie (pictured with the CST2 speaker) in an adjacent corridor. Carnegie had sensibly treated their space with room treatments; the sound of the CST2, which combines eight 5.25" Vipacor-cone woofers with a 1"-by-3" Mylar-fim planar tweeter, driven by a VAC amplifier and a Mach 2-modded Mac mini feeding a Tranquility DAC, was impressively neutral and fullrange on Patrica Barber's "A Test of Honey" from Cafe Blue.