Personally I wouldn't go with a tune below 20Hz (which is rare anyway, and leads to monstrous-size cabs). Thanks to the pioneering work of people like Jon Dahlquist, Jim Thiel, Richard Vandersteen, and John Fuselier (footnote 2), physical time alignment of drivers in a dynamic loudspeaker system is virtually a given these days, and the problem of baffle edge diffraction has been identified and smacked upside the head. Thanks for telling it like it is. Toole/Keele/Geddes say that polar plots (or early-reflection directivity index) are important. The last thing we need here. ... fully horn-loaded loudspeaker that laid the foundation for the Klipsch brand. Some of the mentioned speakers are very accurate. Description You know, basically my garage system ;). Myself I've picked the tapped horn route for 20Hz extension, but extension in and by itself is actually quite easy; I could have picked a pair or more of sealed or ported large-diameter woofers, again at about 1/4 the size, and be done with it - been there done that. Audio Perfectionist mentioned your cherry-picking style of measuring many years ago. In fact I built just such a cabinet and I was shocked at how 'dead' the music sounded compared to the final cabinet which has less bracing and damping. But if you're going to do the review...and then publish these measurements....you've got to do better than what was published here. Using a second amp for only (1) test, then not renting the use of a semi-anechoic room. Efficiency, sensitivity and coverage pattern – all attributes that are hard to beat,' says Klipsch's Principal Engineer Roy Delgado. The result is an increase in efficiency so drasticfrom approximately 1% or 2% to nearly 50% for a properly designed hornthat the diaphragm's excursions can be kept extremely low, allowing the driver to operate within its most linear range. Face it, this is a 1950's era speaker and it shows. ... the First Watt SIT-3 and the Quad II Classic. While I understand the practicalities, this should be mentioned in the review. It might have been useful to inquire which amp(s) ... Stereophile a magazines that measures and listens, Measurement technique, explanation leave a lot to be desired. That's one approach to speaker design that has stood the test of time, but the "classical" approach I'm referring to is more Floyd Toole. Yeah, this has always been the standard response --- look at how big and sensitive our product is, their cone movement, yada yada. Meaningful distortion plots are difficult without access to an anechoic chamber, as I have explained in the past. woofer driver, 1 m, In addition to the complexity of the system, I found that the balance between the two very different amplifiers changed slightly as I turned the overall system volume up and down. The constant power, uniform directivity philosophy, coupled with the standard approach to lowering resonance and hopefully distortion, has delivered many a nicely theoretical loudspeaker. I am surprised Klipsch allowed you test them in that room with the speakers only 8' apart with listening distance even less. In the late 1950s (footnote 1), the wooden midrange horn was replaced with a new Klipsch-designed aluminum horndubbed the K400now augmented with a separate, smaller horn mounted within its mouth for the treble range; those two horns now got to share a cabinet of their own, and the bass cabinet's 12" woofer was replaced with a 15" one. Right now I am using a B&G Neo 10 and Neo 3 planar combo and two 6 inch woofs below. With bass reproduction I find it's even more important with headroom. Snap. Why measure speakers in a driveway when it can have a VERY different response than a room ? The corner still serves as an extension of the low frequency horn, improving low frequency performance. 2. A few British speaker makers still employ that lossy-jointed, thin (and damped) wall concept of cabinet design. Based on over 40 years experience with the same set of K-Horns in many environments, here are a few other suggestions for maximum enjoyment of the Klipschorns (only after you have a correctly sized room and listening position): - Get the most massive, powerful quality subwoofer you can afford to fill your large room with silky 15Hz - 80Hz bliss. While Klipsch has added the back panels meaning the speaker doesn't have to be flush against the wall it still needs the corner loading to finish the horn flare. Klipsch Klipschorn AK6 Floorstanding Speaker - Walnut (Pair) **New Model** $14,998.00. • A DSP'd, multi-amped KHorn would be mind blowing and further validate a truly great design that should be improved upon for future generations. What a gutsy conclusion. A dilettante has given me his dubious expert opinion. There are speaker designers who design and build speakers (that many customers love) with solid hardwood, rather than plywood or MDF, because that's the sound they are after, resonances and all. Yes, if someone liked a speaker that didn't measure well, they do say that the measurements weren't performed correctly. They're not. Electronics Hello, Sign in. Thinking the time was right for a Klipschorn review2006 was the 60th anniversary of its designI got in touch with a Klipsch representative, who requested photos of my room and details of its size and construction style. There are plenty of them out there, new and used. (Try DARKO KIH #25 "what do measurements really tell us"). Ken. They were made in the USA by the hands of Paul Klipsch himself and everything we’ve done since then was because we started here. Having smooth full height walls adjacent to the speaker is paramount IMHO. Thanks, Greg :-). Yeah, this has always been the standard response --- look at how big and sensitive our product is, their cone movement, yada yada. If you really want to hear what the very best Khorns sound like, you'll need to hear some that have the full compliment of Volti Audio Klipsch Upgrades in them. Not one single Rival customer would have me tweak the design of their speakers and therefore change the sound, in order for them to test better. The veneer leaves are kept in order as they are delicately sliced from the timber and precisely arranged to provide a mirror image at the splice joint — like turning the pages of a book. Each Compare: 1066446. I brought this up at Audio Asylum in a thread called "Those darn measurements" about 2 years ago. I'll admit I posted in a way to get your attention...but. No distortion tests, no polar plots, no tone-bursts, no cavity-noise in db. That's what makes it such a brilliant design. Klipsches have never been able to do it, their long sales history notwithstanding, while large-diameter sealed woofers have, with ease and no strain, given enough wattage, since day 1. That is to say: a bigger air radiation area and much higher efficiency equates into less cone movement and lower distortion. Seriously...you guys did not do a good job on this one. Moving fast forward: time alignment is solved by mounting the tweeter on top, aligned with the midrange horn. 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. But that fades in comparison with Dick Burwen's system! These are the smallest earbuds I have encountered, designed to go further down the ear canal than typical, with tiny and lightweight drivers. Of course I was speaking only of the ability to hit the air and make the VLF wave, period. There's money to be saved with DIY, and finding the right design from named individuals is a great way to go with this segment of subs. The darTZeel amp -high distortion, best amp ever. The MRSP for the X11i earbuds is $350, BLINQ had them for closer to $100. I purchased my KC-BR's (Klipschorn Birch Raw) in 1977 for $1,000 each and still have and enjoy them. Needless to say this construction cost significantly more than the speakers. I have neither the vocabulary nor the color perception to accurately describe the Klipschorn AK6's gorgeous, vintage-inspired grille fabric; suffice it to say, I never tired of gazing at these speakers, with or without a soundtrack. The sound was great. Heritage Series Speakers. I forget which amp, I think it was a big beast with 17 screws on top? At least offer an in-house designed and optimized optional unit. I would add to that though: shame on Klipsch for not seeing that themselves. The worst of my profanities were directed at the flimsy and unwieldy cardboard cartons in which the bass cabinets were packed, and which are surely good for only a single ride. The mechanism, though difficult to perfect, is easy to understand: A loudspeaker driver is a notoriously inefficient thing, owing to a severe impedance mismatch between its diaphragm and the volume of air in the listening room; a horn acts as a transformer between the two, making it far easier for the vibrating diaphragm to get a "bite" on the air. A RARE BEAST In addition to the legendary acoustics and impressive upgrades already included in the AK6, the Klipsch Museum of Audio History is proud to offer a limited production of one (1) pair of unique Museum Edition Klipschorns – Numbered AK6 ME-001 and AK6 ME-002 – with official documentation verifying their provenance. We A/Bed the modded speaker with Quads....very little difference.....really! Period. People already struggle with understanding measurements and what you're doing causes controversy. Free shipping. I also love the whole wall-console of mostly vintage-looking gear with its many knobs and VU-meters. Body—especially body. ( god bless em ). I own KEF LS50's for my mains in my system. This shows the same information as a polar plot in what I feel is a more easily comprehensible manner. Certifications: THX Video Calibration Level 1, THX Video Calibration Level 2 I am sure Paul probably helped them set up the system as they were close to Hope. There are choices I made during the development of the Rival, and the sound I wanted took precedence over the measurements. Acquired the 60th Anniversary KHorns some years ago and had to really work on them. Paul Klipsch recommended the 1.0 to 0.618 ratio of distance between speakers to distance from front wall to back wall and its important. Hmmm, popcorn ready, I'll be waiting for this answer myself! Basically it is like going to a small jazz club but the performer is a stereo rather than a jazz combo. leaner than usual on the bottom but more dynamic than than anything else in the house. The involvement in the music is great, true 3D and no listening fatigue at all. I expected the temporal performance of this speaker to be very poor and it is. Keele's work on optimum mouth size (AES Convention 46, 1973, preprint available on his website) shows great examples of the ripple here. It has, however, been well-served by seeing speakers as transient energy devices, which is how music manifests. This is just speculation, but I'm with those who say that this speaker probably still needs very tight corner placement (despite the new back panels and in contrast to the company's recommendations) and is best used in large rooms where you're mainly listening to the reverberant field. By measuring it in a driveway you've robbed it of a huge portion of it's bass In a perfect world if you found a large building exterior in the shape of an L and stuck the speaker in the corner you could maintain the flare, and then measured ground plane you would have gotten much closer to the actual capabilities of the speaker. To be clear, by "classical" I mean not traditional but orthodox from an engineering standpoint: resonance-free enclosures, even, flat frequency response, uniform dispersion, etc. They were playing some sort of experimental jazz I am not familiar with. The Beatles ........... About having that cake and wanting to eat it too. They aimed at high efficiency and the sonic advantages this brought with it, and given the popularity these speakers gained over time, and still do, it would seem many were happy with the tradeoffs that followed here. ..there is no constant-correlation between tests and sound. I have made several speakers over the years and even an eighth of an inch movement between the drivers is quite audible.