yepimonfire Posted November 8, 2017 Share Posted November 8, 2017 If you read the Dolby Atmos home theater paper, it states that ceiling speakers should have a 90 degree dispersion pattern out to 10khz. Many have commented with woes finding a speaker with such a wide pattern, necessitating aiming of speakers and a fairly narrow range of decent seats in a home theater. Since Klipsch gives a 90x90 dispersion spec with their speakers, I decided to test out whether or not they could meet atmos specs. I mounted an R-14m speaker flush to the ceiling, and placed the mic 45 degrees off axis vertically and horizontally 6’ away, and ran a sweep up to 20khz. A 3ms window was applied to remove reflections from the measurements. Oddly enough, the windowing caused a strange jump around 600hz, which should be ignored. As you can see from the graph, the speaker manages -3dB off axis all the way out to 13khz, exceeding the requirements. If one is considering ceiling speakers for atmos, where a large number of seats off axis vertically are concerned, Klipsch just might be a good solution. Anyone else know of any wide dispersion speakers that can meet Dolby’s specs? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
EpicKlipsch Posted November 8, 2017 Share Posted November 8, 2017 Interesting. How did you mount them to the ceiling? They dont have a threaded hole like the RB10 do they? Quote Link to comment Share on other sites More sharing options...
RoboKlipsch Posted November 9, 2017 Share Posted November 9, 2017 klipsch describes all of their speakers with horns as far as directivity and coverage 90 lateral and 60 vertical is quite popular as is 90 x 90 Quote Link to comment Share on other sites More sharing options...
yepimonfire Posted November 10, 2017 Author Share Posted November 10, 2017 klipsch describes all of their speakers with horns as far as directivity and coverage 90 lateral and 60 vertical is quite popular as is 90 x 90Yup, but just because a horn has a nominal pattern doesn’t mean it’s constant with frequency. All of the reference stuff I’ve measured displays constant directivity, the premier and icon “reference” is even better than the II series. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
yepimonfire Posted November 10, 2017 Author Share Posted November 10, 2017 klipsch describes all of their speakers with horns as far as directivity and coverage 90 lateral and 60 vertical is quite popular as is 90 x 90Yup, but just because a horn has a nominal pattern doesn’t mean it’s constant with frequency. All of the reference stuff I’ve measured displays constant directivity, the premier and icon “reference” is even better than the II series. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
yepimonfire Posted November 10, 2017 Author Share Posted November 10, 2017 Interesting. How did you mount them to the ceiling? They dont have a threaded hole like the RB10 do they?Just temporarily with picture hanging strips, but one could mount them with an omnimount provided they don’t mind putting holes into the cabinet.Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
EpicKlipsch Posted January 25, 2018 Share Posted January 25, 2018 On 10.11.2017 at 11:05 AM, yepimonfire said: Yup, but just because a horn has a nominal pattern doesn’t mean it’s constant with frequency. All of the reference stuff I’ve measured displays constant directivity, the premier and icon “reference” is even better than the II series. So which Bookshelf would you according to your measurements recommend for Atmos on ceiling duty? Would you let them fire down in a straight line or angle them to the MLP? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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