Audiophilepure

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“Most impressive about the D1.1s, as with my reference X1s is their ability to do a great job on less than pristine musical selections. These are musical speakers first, not audiophile speakers, limited to a few perfect tracks. Thanks to the incredibly low distortion in the Raidhos, these are speakers you can listen to all day long with no fatigue.

As mentioned earlier, the bass that these speakers can generate is of extremely high quality, and extends quite low, lower than the 50hz spec might suggest. Tracking through a long play list of hip hop, electronica, and classic rock tracks with plenty of low bass output was indeed satisfying, though with the Bryston amplifier’s 1000 watts per channel on tap, I did have to be careful not to bottom those little woofer cones!”

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“Klipsch has divided the RP-8000F horn into two sections by the copper ring embedded into the horn. The inner section is a conical plastic piece which serves as the throat of the horn, and the outer section, the mouth of the horn, is a softer silicone piece that takes on a more orthogonal shape. The softer silicone material of the mouth is used to avoid bell resonances in the horn. The throat of the horn is a round conical shape in order to reduce early diffractions as the soundwave leaves the tweeter diaphragm. The squarish mouth shape governs its dispersion pattern. A 1” titanium dome tweeter is used to load the horn, and it uses what Klipsch calls the ‘Linear Travel Suspension’ system which is a carefully designed suspension that allows for larger excursions of the moving assembly before the suspension thwarts linear motion thereby incurring distortion. Titanium seems like a natural choice for the diaphragm material since the horn-loading and lower crossover point might be more than softer dome types such as fabric could withstand. The rear chamber of the tweeter is vented to allow backwave energy to better dissipate instead of being reflected back into the diaphragm which would also increase distortion. ”

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“Once we’re happy with their positioning, we shake off any dust particles with a quick blast of Faithless’s dance classic Insomnia. And the Revels transport you back to the dancefloors of the 1990s in no time.

The track’s blipping bassline can be lost with poorer-sounding speakers. With the Revels, you’re left in no doubt of its presence. The F35s give those bass notes a satisfying texture and match the pace of the track beat for beat.”

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“Revel describes DCC as “a plasma electrolytic oxidation process that uses a plasma discharge to create a coarse ceramic coating on both sides of the aluminum core. The deep ceramic layers sandwiching the aluminum core provide constrained layer damping that push cone breakup modes outside of the passband allowing the driver to maintain ideal pistonic motion throughout its range.” The DCC cones are coupled with an improved motor structure for greater efficiency, dynamic range, and power handling, with reduced distortion and compression. Last but not least, the crossovers in the PerformaBe series are high-order crossovers that utilize all film capacitors and air core inductors in the midrange and tweeter circuits.”

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“The cabinet that houses all of this applied cleverness is a solid MDF affair that makes use of curved edges to reduce the effect of standing waves through the reduction of parallel surfaces. There is no provision for bi-wiring and instead you get a solid pair of binding posts on the back that should accept pretty much any type of cable with any type of termination. Magnetic grilles are supplied should you wish to use them and the cabinet is largely free of adornment or frippery.

The Revel is not an easy product to photograph – not least because like most piano finish products, it is both enormously reflective and capable of retaining fingerprint smears seemingly forever. It is however a member of the notorious category of ‘things that look better in the flesh.’ You’ll have to take my work for this but sat on a stand in most rooms, this is a handsome and appealing speaker. It does without some of the fussiness that can affect some American designs and the result is a pleasantly understated object that should work well in a variety of spaces. ”

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‘The Elac AF-61 reminds me of that person in school who always had the right answer but never put his hand up first—the understated, confident one. Mid-priced by today’s standards, the AF-61 delivers in all the areas that a loudspeaker needs to. It can image precisely, play loudly without distress, extend low enough that with a bit of room-gain assistance a subwoofer may not be necessary, and be driven easily by the vast majority of good amplifiers, and looks comparatively unflashy while doing all this.

The ideal physical situation for this impressive loudspeaker would be a room that is slightly too big for the stand-mounted AS-61, and the ideal listener would be one who likes his music played louder than the AS-61 can muster. So, if you heard the AS-61 at a show or in a store, and thought “That’s the sound I want, but I just need a little bit more,” the AF-61 is very likely to supply the more that you crave.”