Trenner & Friedl Duke

"$175,000/pair?" I gulped. I know my beat at the 2011 CES was expensive loudspeakers, but the price of the Trenner & Friedl Duke took my breath away. Yes, the sound in the large room the new Austrian company shared with Cardas, Profundo, and the Jeff Rowland Design Group was superb, but that's a lot of change, even if the manufacturer will fly anywhere in the world to set the speakers up in the customer's home. (The rest of the system comprised a dCS Puccini used as a transport to feed JRDG's new Aeris DAC (the Colorado company's first digital product), $9800; a JRDG Criterion line stage, $18,500; and two JRDG 625 stereo power amplifiers, $13,500; with Cardas Clear cabling.

Each 12" woofer uses a fiber-glass–reinforced paper cone and is loaded by what is referred to as "a hybrid form of horn-resonator and bass reflex design." The mid/HF module is coupled to the woofer modules with spheres of varying hardness, to drain vibrations optimally, and can be adjusted to bring the drivers into proper time alignment at the listening position. The midrange unit features a papyrus cone with an elmwood phase plug and an alnico magnet, while the enclosure is filled with wool from "locally raised sheep" to reduce internal reflections being retransmitted through the drive-unit cone. The tweeter uses a titanium nitride dome loaded with a Tractrix-flare horn, while the supertweeter is a diamond-diaphragm type. The upper-range crossover is passive; the woofers are fed via a line-level crossover, and internal wiring is all Cardas Clear.

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COMMENTS
planet10's picture

"a hybrid form of horn-resonator and bass reflex design."

In more common parlance, a BVR = Big Vent Reflex, i'd guess.

dave

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