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Avantgarde Duo SD iTRON G3 active loudspeaker Page 2

Step two is to set the relative levels of the midrange and highs using two sturdy three-way switches, choosing among 0, +1.5dB, and –1.5dB for treble and midrange. The crossover from the midrange horns to the treble horns is at 3.5kHz, a frequency that conveniently caps the fundamental frequencies of common musical instruments. (On a standard piano, the four highest notes, including the black keys, are in the range of the tweeter; the rest are in the midrange.) I went back and forth but ultimately left the tweeter flat and set the midrange level to +1.5dB.

Next, I adjusted the…

Avantgarde Duo SD iTRON G3 active loudspeaker Specifications

Sidebar 1: Specifications

Description: Three-way, semi-active or fully active, floorstanding loudspeaker. Drive units: Fully active, Spherical Horn, 180° aperture angle Tweeter, 8" (200mm) diameter bell, 1" (25.4mm) annular driver with 500W current-amplification iTRON amplifier; Fully active, Spherical Horn, 180° aperture angle Midrange, 26.5" (670mm) diameter bell, 7" diameter, celluse cone, soft mesh driver and 2 × 100W, current-amplification iTRON amplifier; Fully active, fully digital, 12" (300mm) diameter, long-fiber paper/carbon fiber composite, vented subwoofer with 500W class-D…

Avantgarde Duo SD iTRON G3 active loudspeaker Associated Equipment

Sidebar 2: Associated Equipment

Analog sources: Spiral Groove SG-2.1 turntable and Centroid tonearm, VPI HR-X turntable and JMW Memorial tonearm; Grado Epoch, The Reference, and Signature Reference; MicroBenz SL, Audio-Technica AT-MONO3/LP phono cartridges.
Digital sources: Audio Research CD6E CD Player, Mytek Brooklyn DAC+.
Preamplification: Line: BAT VK-90 and Sutherland Line Blocks. Phono: Sutherland Phono Blocks Refined and Phono Loco.
Amplification: BAT VK-90t and VTL Ichiban Signature.
Loudspeakers: T+A Solitaire S 530, Magnepan 30.7x, Wilson Audio Sasha DAW, ELAC…

Common Wave: DeVore Fidelity with an Accuphase Stack

T.H.E. Show in Costa Mesa wasn't large, but there were a few debuts including several in the six rooms presented by Common Wave HiFi. In room 327, the Accuphase C‑57 phono stage ($13,975) was part of a demo setup that also included an Accuphase E‑3000 integrated amplifier ($8950), which was shown on static display at AXPONA but was in use here for the first time in the US. When I was in the room, the class-A Accuphase E‑700 stereo integrated amplifier was in use, driving a pair of DeVore Fidelity Orangutan O/93 speakers ($8950/pair, more for custom finishes).

Records were spun…

Re-Tales #55: A Solo Gryphon Showroom in L.A.

Often in these pages (and in Industry Update), we have reported ways various brands have experimented with the traditional hi-fi–retail formula. An example: the single-company dealership, adopted most recently by the Vervent Audio Group, parent company to Focal and Naim.

The latest to set up a single-brand dealership is Gryphon Audio Designs, which is preparing to open a "mono-brand" showroom in Los Angeles. Gryphon's implementation, though, is a radical departure from previous experiments in one respect: It's in the Pacific Design Center (PDC), a large (1.6 million square feet) multiuse…

Analog Corner #222: The Thales TTT-Compact turntable & Simplicity tonearm

Though clearly built more for performance than for looks, the Thales TTT-Compact ($13,200), designed and built in Switzerland by Micha Huber (footnote 1), ranks among a handful of today's most elegant new turntables. Like the Spiral Groove SG 1.1 or the AMG Viella 12, the TTC-C, true to its name, is compact and self-contained, with its belt and built-in motor hidden under the platter.

That Huber was once a watchmaker is evident in every aspect of the densely packed TTT-Compact, which measures approximately 18" wide by 3.5" high by 12" deep. From the packaging and instructions to its muted…

Analog Corner #222: The Thales TTT-Compact turntable & Simplicity tonearm Page 2

Setting up the Simplicity tonearm is far from simple. First you install your cartridge in a slotted headshell that will eventually lock into the arm's pivoting carrier (think of the old Dual system) using low-profile screws (supplied). The screws should be tight enough to prevent easy movement and loose enough to permit further adjustment.

You then slide the headshell into a large jig (supplied) called a Sight Unit, making sure there's enough clearance between the headshell and the carrier's transparent acrylic top plate, to avoid breaking the cartridge's cantilever. Unlike the arm's…

Zesto Audio with YG Acoustics, Stillpoints, and Cardas Audio

At T.H.E Show SoCal, tubed equipment didn't seem as prevalent as I've seen at some other shows, but it still had a presence—a very strong presence—in Zesto Audio's demo room 227. The California-based amplification and electronics manufacturer is led by George Counnas, who has also worked as an audio engineer in addition to designing equipment tubed hi-fi equipment, and his wife, Carolyn, who is responsible for Zesto's signature industrial design.

At T.H.E. Show, Zesto presented a new digital-to-analog converter with analog-tubed output section, the Athena DAC ($15,000) with ESP…

SVS and Hegel: A Fine Match

SVS is best known for subwoofers, but the company also makes speakers. Demo'd at T.H.E. Show in Costa Mesa were a couple of examples: the SVS Ultra Evolution Pinnacle flagship towers ($5000/pair; read Sasha Matson's review), which were playing when I visited the room, and a pair of rear-ported Ultra Evolution standmounts ($1200/pair; stands not included), which were set up in a system with the SVS SB-5000 R|Evolution subwoofer ($2000), which debuted at AXPONA. A Hegel H400 integrated amplifier ($7500), class-AB with DAC and streamer, provided amplification and digital front end in a single…

Abbey Road Has a New Number: 801

Bowers & Wilkins and Abbey Road Studios have announced the 801 Abbey Road Limited Edition loudspeaker, a model that commemorates the companies' 45-year relationship. Production is capped at 140 pairs.

The new loudspeaker starts with Bowers & Wilkins's flagship 801 D4 Signature platform and adds studio-inspired cosmetic changes. Each cabinet is finished in Vintage Walnut and trimmed with red Leather by Connolly, a nod to the control room in Abbey Road's Studio Two. A numbered plate on the rear identifies the run, and each buyer receives a hardcover book documenting the brands'…