Generally you do not need to angle the bass driver, but if it is a mid-woofer with a high crossover frequency to a tweeter you may get a suckout develop at high off axis angles (say above 60 degrees) due to the mid-woofer becoming directional. My sitting position is 3 ft away from back wall. The downside is their physical size (particularly length) which might make them hard to use as ceiling speakers unless your room is tall, as they would need to be directed at the seating location. But, I think that ceiling mounted would be better all other things being equal. They do not need to be floorstanders. Would the definitive technology uiw rss II be a good speaker. Hey this is exactly the info I was looking for. So two questions: 1) What in-ceiling speakers can be aimed at the listening area? Whether in-wall or in-ceiling, these speakers provide perfect choices for multi-room audio, home theater, primary listening and many more. For the center height speakers, I was considering using Proficient C895S. Industry convention is to lay out the speakers based on the main listening position, which typically means the 2nd row goes between the two rows of seats. But yes, angled baffle speakers (where the tweeter is angled) make A LOT of sense for the ceiling speakers in an Atmos or DTS.X or Auro setup. The “correct” way to answer your question is to look at the off axis dispersion data of your Polk A1 speakers, and the angle at which the listening position is off axis to the Polks when they are installed in the ceiling. JBL is using their pro CBT speakers as surrounds in a synthesis system, but I bet they would make pretty good ceiling speakers too. They don’t just blend into the wall or ceiling, they become part of it. The rear surrounds are 9′ behind the main listening position, and are 15′ apart. We consider the example of a system with 4 ceiling speakers and two seating rows and show how dispersion requirements change for: Dispersion is another word for coverage – the question we are asking is “does each member of the audience hear the same sound?”. Minimum recommended separation between the surrounds and Atmos speakers is 30 degrees. CBT would seem to solve a lot of issues. Uniform sound output levels are achievable not only directly under the speaker, but also over a wide radius. The really important thing is to maintain proper spacing and angling of the ceiling speakers from the LCRs and rear surrounds. I do not have space below my TV for a vertical floorstanding speaker. Our primary seating is roughly in the middle of the room, no more than 8′ from the front wall. Further let’s assume that its not possible to get the optimal dispersion for both rows. Thanks for reading…unfortunately a question like that requires some detailed design work, it’s not something that can be done in comments to a blog post , 1) working out what where the ceiling speakers should go based on the Atmos / DTS.X specifications I can’t answer for sure, and only refer you to what’s discussed in the article…check your angles relative to each seat, check your speaker off axis dispersion patterns (measure them if necessary) and base the speaker positions on that…aiming to get all seats in a part of the speaker’s dispersion that will hit -3dB @ 4kHz. My basic question is Can i do 7.1.4 with this space availability or i need to allocate more space for length. I was thinking of buying ceiling speakers that allow me to angle the tweeters rather than the whole speaker. Nyal, Great article, very informative. The issue with “constant directivity” designs (which aren’t really CD at all, as a very large part of the frequency range is not covered by the waveguide) is that dispersion is normally quite narrow and therefore it is hard to get really good coverage with them if you have multiple rows of seats and / or a low ceiling (e.g. Or should the fronts be pointed straight backward and rears pointed straight backward? (recommended 2 to 4m) 9′ ceilings I’d generally recommend angled baffle speakers or box speakers on ceiling pointed at listening area. Differences in SPL due to some seats being closer / further away than others. The theatre is currently under construction, elevation speakers are certainly easier to accommodate rather than in ceiling but i wouldnt want compromise. I’ve been struggling with my Height Vs. ceiling set up. Your email address will not be published. any help or experience would be appreciated. Thanks for the reply No, because you have to think of the primary usage of these speakers, which is for panned ‘audio objects’. I have a new question. I had planned to run 4 Tannoy CVS6 in-ceiling speakers. I realize Atmos should be a “point” source of sound, but I’m aiming for a “sweet listening area” rather than one “sweet spot” to maximize listening effect for all positions in the home theater. Its wide-dispersion flush-mount ceiling speaker design employs unique acoustic construction to realize a wide area of coverage. 3) finally identifying a speaker that delivers the coverage requirements and is a good timbral match to the rest of your speakers, 1/2 above can be done from some basic two dimensional drawings (CAD or to scale paper drawings)…3 requires some detective work – typically firstly identifying suitable speakers and then measuring them to confirm they work. Reference #2 claims that 3 identical vertical floorstanding speakers (Left, Center, and Right) is the best configuration. The angle of the ceiling should not make any difference with respect to Atmos speaker placement. Amazingly strong magnetic grille. These speaker’s woofer and tweeter are angled at 15 degrees. I would push you to consider moving the couch away from the back wall if you want to use more speakers. Agree with all your points. Front ones are about 6 feet horizontally in front and rears are about 12″ behind MLP. Timbre matched to all of our THX-certified products, so you can mix and match to create an unbeatable, discreet stereo or home theater system thatâs just right for you. Note that these drawings only consider coverage in one dimension; in reality you also need to consider coverage across the width of the seating area. If you think that would be workable how high off the floor should they be? Thanks for reading! I want to add two Kef speakers for the Atmos experience. On a side note – the MS05s are currently in Auro 3-D location (front height and surround height – I don’t have Auro-3d AVR though – just Atmos). For a terrific 2-way class option that gives Klipsch a run for their money, is this … Off axis suckouts. Employs dual 5.25-inch Cerametallic woofers that operate in an enclosed tuned-port chamber. Tweeter “down” further than the woofer, or angled on its “side” so both are equally angled, or doesn’t it matter? I noticed that the atmos back pair of speakers were situated between the first and second rows and were toed in towards the second row. Easy to mount, these Sonance speakers include a pair of round perforated steel grilles that can be painted to match your decor. F-2000: 110° × 100° 3. Monitor Audio CT-165 Otherwise you can fall short on frequency coverage at the listening position if you use speakers pointed straight down. Hi Nyal, thank you for excellent writeup and helpful comments. The room is not long enough for two rows of recliners. Any suggestions would be much appreciated. Weird !! Speakers level matched, time aligned, etc. These examples clearly show that angling speakers significantly reduces the coverage requirements. Of course that requires some “design and engineering”! The room is ~15′ x 20 deep, and the ceiling height for the left 2/3 of the room is 9′. Thanks for your comments. At 1600 for 4 I want to make sure. WIDE DISPERSION SURROUND TECHNOLOGY As the cornerstone of every Klipsch surround speaker, proprietary Wide Dispersion Surround Technology (WDST) provides astounding sonic detail for rooms with less-than-ideal placement configurations. 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