Mr Spock
demokratischer - sektor
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The Klipschorn AK6 is a three-way, fully horn-loaded loudspeaker of considerably greater-than-average size and sensitivity: It measures approximately 53" high by 31" wide and 28" deep, tips the scales at 220 lb each, and is said to require only 1W of power to produce a sound pressure level of 105dB, which is on a par with a jackhammer, a gas-powered chainsaw, and a five-string banjo.
for reproducing the approximately 3.25 octaves between 450Hz and 4.5kHz, the AK6 uses a compression driver with a 2" phenolic diaphragm, loaded with an exponential horn molded from rubber-impregnated ABS plastic, with a 16.5" wide by 5.5" high mouth. Installed just above that horn is a far smaller horn—its mouth is 4.25" by 1.75"—molded from fiberglass-impregnated ABS plastic in a Tractrix flare, driven by a compression driver with a 1" phenolic diaphragm. The midrange and treble drivers are mounted inside a 12"-tall upper cabinet, the four stiff rubber feet of which engage with recesses made for them in the top surface of the bass cabinet.
I began with the backs of the Klipschorn AK6s a short distance from the front wall—their front surfaces, measured at the centers of the cabinets, were a little more than 3' from that wall, and a little more than 8' apart from each other—and with the speakers slightly toed-in toward the center listening seat. At first, I relied on my reference Shindo Haut-Brion power amp, which uses push-pull 6L6 tubes, operated as pentodes and without feedback, to deliver 20Wpc.
The sheer tactile immediacy and startling clarity of the solo tenor saxes on Sonny Rollins and Coleman Hawkins' Sonny Meets Hawk! (LP, RCA/Classic Records LSP-2712) were almost without precedent in my home. But there was very little bass, and musical involvement was compromised by a lack of coherence: Those remarkable sounds weren't jelling into a comprehensible whole.
I found in the Klipschorn AK6 an imperfect loudspeaker that satisfied many of my long-standing longings and a couple I didn't know I had—for amazing sound way off-axis, and for big, beautiful pieces of old-school audio art in my listening room. The AK6 also seems to offer exceptional value: for the technology, woodworking, and sheer size it offers, $14,998 for a pair of these is a steal. No one with a taste for realistic playback, and especially no one with a taste for low-power amps and high-sensitivity speakers, should miss a chance to hear these.
Description: Three-way horn-loaded loudspeaker. High-frequency driver: Klipsch K-771 compression driver with 1" polyimide diaphragm, loaded with a polymer Tractrix horn. Midrange driver: Klipsch K-55-X compression driver with 2" phenolic diaphragm, loaded with a polymer exponential horn. Bass driver: Klipsch 15" K-33-E woofer with fiber-composite cone, loaded with 8' bidirectional folded horn. Crossover frequencies: 450Hz and 4.5kHz. Frequency response: 33Hz–20kHz, ±4dB. Sensitivity: 105dB/2.83V/m. Nominal impedance: "8 ohms compatible."
Dimensions: 53" (134.6mm) H by 31.25" (79.4mm) W by 28.25" (71.75mm) D Weight: 220 lb (100kg) each.
Finishes: Satin black ash, American walnut, Natural cherry.
Serial numbers: 106644619150001 and 106644619150002.
https://www.stereophile.com/content/klipsch-klipschorn-ak6-loudspeaker#7qCgcC021hz9FjoL.99
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