Description: four-driver, three-way, floorstanding loudspeaker with "Conjugate Load Matching," "Coupled-Cavity" bass loading, and optional, line-level equalizer. Drive-units: two 6.5" (160mm) fiberglass-reinforced, pulp-cone woofers, one 6.5" (160mm) "Uni-Q" midrange/tweeter with concentric 1" (25mm) soft-dome tweeter. Crossover frequencies: 3rd-order at 160Hz, 5th-order at 2.5kHz. Frequency response: 50Hz–20kHz, ±2.5dB, –6dB at 38Hz (measured at 2m on reference axis). Sensitivity: 91dB/W/m (2.83V RMS input, band-limited 50Hz–20kHz, anechoic conditions).…

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All of the measurements were taken with the Kube out of the circuit. The impedance of the KEF 103/4 is shown in fig.1. The minimum at about 85Hz is actually the tuning of the port; the large rise at the bottom of the range (around 10Hz) appears to be due to a large, DC blocking capacitor in series with the network. Note also that the Conjugate Load Matching crossover, while keeping the response's magnitude reasonably linear above about 60Hz, is not as effective as that in the more expensive KEF R107/2 (Vol.13 No.5, p.114). The impulse response (fig.2) is rather…
All three discs feature female singers—two of them are tribute albums to famously smoky singers (The Road Keeps Winding to Abbey Lincoln, Cocktails at Dusk to Chris Connor)—and that may account in part for Blake's revitalization at the age of 80.
Bonus for those in New York: Saturday night, June 20, he and Sara Serpa…
Using handcrafted tube electronics designed by his brother, Sax soon became known for mastering The Doors' debut album. By 1972, he was mastering 20% of Billboard magazine's top…
The event takes place 1pm to 5pm each day and refreshments will be provided. RSVPs are recommended. For details…
Rachel Podger, Bojan Cicic, Johannes Pramsohler, violin; Brecon Baroque, Rachel Podger
Channel Classics CCS SA 36515 (2 SACD/CDs). 2015. Jonathan Freeman-Attwood, prod.; Jared Sacks, eng.; Ernst Coutinho, asst. eng. DDD. TT: 96:54
Performance *****
Sonics *****
It's no big secret that classical music is in trouble. At a time when selling a few hundred CDs will land you squarely in the upper reaches of the classical music chart, and the venerable New York Philharmonic faces an unsettled future in terms of its…
"Geez, Mom. I've been an audiophile for 15 years. This isn't a phase I'm going to outgrow."
Instead of motherly empathy, I got a slight smirk and a retort: "But it's always the same thing."
Until recently, I'd begun to think that Mom may have had a point: The audiophile pursuit—mine, at least—was beginning to feel a bit samey: Get tired of component A, buy a possibly better-sounding, likely more expensive…
Of the speakers I've reviewed over the years, one stands out as being the most unusual, and I remember it with particular fondness: Fujitsu Ten's Eclipse TD712z. Looking like something that would be at home aboard the Starship Enterprise, this egg-shaped, single-driver speaker distinguished itself by its transparency, resolution, soundstaging, and lack of coloration. While no match for any number of comparably priced (or less expensive) multidriver speakers in bass extension and maximum attainable loudness, the strengths of…