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Clayton here. For all the negative vibes Nicoch is spraying out, his assertion is generally correct - but it does not apply to my designs. His complaint was that the little horn lens that are used in many coax drivers are not large enough to enable a low enough cutoff point to mate with a large woofer. He is correct. However, we don't use that type of coax driver.Here is his wording: (The waveguides are always too small and this causes unrecoverable problems at the crossover Lynn with a horn loaded co-axial you would be correct that you would create some strange diffraction patterns. If the cone was used as the horn as Radian does then you could do something that conceivably would work but I don't see that done much.)There are two categories of how the coax is horn lens is designed, which address different applications in the pro market. The type with the small lens is shown below next to the second type, like the Tannoy design, where the woofer cone serves as the waveguide. See images. The Tannoy type takes advantage of the large cone waveguide to provide the horn loading support down to the cone's diameter / wavelength where 15 in diameter = roughly 800Hz support and pattern control bandwidth. We employ this approach in the Hologram series models such as the M4. And we use the same approach in the Lumina 12Be speaker with the Radian designed X32 open-baffle coax driver. Nicoch wrongly assumed that we use the other type with a small waveguide and hence questioned its efficacy. Clayton ShawSPATIAL AUDIOwww.spatialaudio.us
Thanks for posting Clayton.I plan on giving you a quick call later this week or next week so I can place my order.I can't wait to hear how this model has improved on your older design that I enjoyed so much.George
I had the opportunity last night to listen to the Beatles "Love" album – the one remixed by George Martin and his son that the Cirque du Soleil used. I love that CD, and listening to it on the M4 was just an amazing experience. Again, my reaction is much more "what fantastic music" then "what fantastic speakers." Quite wonderful.
Anyone tried the spatial in a home theater type setting. Thinking about a pair for double duty stereo/3.1 in the basement.....
Right on, Rebbi. I had mentioned somewhere (perhaps in another forum) that listening to "Because" on that album through the M4s was an otherworldly experience. Since then I have listened to a remastering of Sound of Silence (S&G) with a similar effect...as though they're in the room, body & soul. The M4s are musical instruments, for sure...
And here's another mind-blower. Try listening to Peter Gabriel's album, "So." Talk about your "otherworldly experiences!"
Yup, as is the Last Temptation of Christ soundtrack (also by Gabriel). But this is the one to check out...seriously mind blowing:http://www.amazon.com/Old-Friends-Simon-Garfunkel/dp/B000002ABF/ref=sr_1_4?ie=UTF8&qid=1457664032&sr=8-4&keywords=simon+and+garfunkel+box
Enjoyed reading this review and then most of the discussion. Rebbi - I have enjoyed you talking about your speaker journey over the years. Have long lusted after Ref 3a speakers (both old before Canada and new), and currently run the top of the line a few years ago Merlin TSM's. My speaker journey is equally long - Thiel concentrics, Zu Druids, Audio Note E's, Ellis Audio (still have these), Harbeth, Penaudio, Maggies, GMA, and I am sure more that I am not recalling. My problem over the last 10 years or so is my small room (12 by 13). I know several have said they are running these in a small room - any more experience with the M4's in a small room vs something like the Ohm 1000's. Nice thing about the M3 and M4's is they are reasonable affordable enough to give a whirl - I want the easy open live you are there sound in my small listening room that you describe.Thanks for the great read.
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