1. Sign-up to become a member, and most of the ads you see will disappear. It only takes 30 seconds to sign up, so join the discussion today!
    Dismiss Notice

Sloped ceiling speakers for Atmos

Discussion in 'Speakers & Subwoofers' started by ChucksterMania, Jan 20, 2019.

  1. ChucksterMania

    ChucksterMania Auditioning

    Joined:
    Jan 19, 2019
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    10
    Real Name:
    Chuck Colquitt
    Thanks for the add. I’ll be receiving my new Marantz AV 8805 in a couple days. Right now I’m running a 5.1 but would like to add ceiling speakers for an Atmos setup. I have cathedral ceilings that start at 8’ and peak at 11’. Im looking for experience/advice on this setup. See attached photo.
     

    Attached Files:

  2. Sam Posten

    Sam Posten Moderator
    Moderator

    Joined:
    Oct 30, 1997
    Messages:
    26,874
    Likes Received:
    4,594
    Trophy Points:
    9,110
    Location:
    Aberdeen, MD & Navesink, NJ
    Real Name:
    Sam Posten
    You can mount speakers to the ceiling for this install but I recommend against in ceiling speakers. Good luck Chuck! and welcome to HTF
     
  3. ChucksterMania

    ChucksterMania Auditioning

    Joined:
    Jan 19, 2019
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    10
    Real Name:
    Chuck Colquitt
    Thanks for the reply. For clarification, are you against in-ceiling speakers because of the angles and recommending surface mounted speakers because they can be pointed at the listening position?
     
  4. John Dirk

    John Dirk Cinematographer
    Supporter

    Joined:
    May 7, 2000
    Messages:
    2,518
    Likes Received:
    947
    Trophy Points:
    4,110
    Location:
    ATL
    Real Name:
    JOHN
    Vaulted ceilings and Atmos don't play well together but all Home Theaters must deal with some compromise. I've never tried this particular setup myself but have heard [negative] comments from plenty who have. If possible, I would try to arrange this in a sort of test bed that could be easily backed out of if necessary.
     
  5. Message #5 of 26 Jan 20, 2019
    Last edited: Jan 20, 2019
    Mark McSherry

    Mark McSherry Stunt Coordinator

    Joined:
    Apr 5, 2013
    Messages:
    207
    Likes Received:
    205
    Trophy Points:
    110
    Real Name:
    Mark McSherry
  6. JohnRice

    JohnRice Executive Producer

    Joined:
    Jun 20, 2000
    Messages:
    11,455
    Likes Received:
    1,524
    Trophy Points:
    9,110
    Location:
    A Mile High
    Real Name:
    John
    Why? There's not much of a slope to the ceiling. Only 3' total. So in-ceiling seems like a viable option as far as I can tell.
     
  7. ChucksterMania

    ChucksterMania Auditioning

    Joined:
    Jan 19, 2019
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    10
    Real Name:
    Chuck Colquitt
    Atmos is new to me so please forgive my ignorance. My understanding is there are two options 1) mount the speakers overhead or 2) mount the speakes low and reflect the sound off the ceiling. If I’m mounting the speaker in the ceiling and can at least aim the tweeter at the listening spot, why won’t it work? I’m not looking for an argument, just understanding.
     
  8. JohnRice

    JohnRice Executive Producer

    Joined:
    Jun 20, 2000
    Messages:
    11,455
    Likes Received:
    1,524
    Trophy Points:
    9,110
    Location:
    A Mile High
    Real Name:
    John
    Vaulted ceilings come in a lot of forms. Your particular situation seems like it would be fine for in-ceiling speakers, which are much better than reflecting ones. But I’m open to explanations of why that would be a bad idea.
     
  9. Gary Seven

    Gary Seven Grand Poo Pah

    Joined:
    Aug 15, 2003
    Messages:
    2,065
    Likes Received:
    454
    Trophy Points:
    1,610
    Location:
    Lake Worth, Florida
    Real Name:
    Gaston
    I have vaulted ceiling as well and was also considering speaker placed there. Is it the slope that causes the problem because you can mount the speakers to compensate for the slope such that the speakers would fire straight down rather then following the slope of the ceiling. What exactly is the issue with vaulted ceilings?
     
  10. Sam Posten

    Sam Posten Moderator
    Moderator

    Joined:
    Oct 30, 1997
    Messages:
    26,874
    Likes Received:
    4,594
    Trophy Points:
    9,110
    Location:
    Aberdeen, MD & Navesink, NJ
    Real Name:
    Sam Posten
    Maybe it'll work just fine. You've got a lot more flexibility with mounted than in ceiling tho. Only some of the in ceilings allow tweeter directionality and none allow woofer aiming that I know of.

    But others are right. A non optimal in ceiling is better than a bounce could ever hope to be.
     
  11. Gary Seven

    Gary Seven Grand Poo Pah

    Joined:
    Aug 15, 2003
    Messages:
    2,065
    Likes Received:
    454
    Trophy Points:
    1,610
    Location:
    Lake Worth, Florida
    Real Name:
    Gaston
    I see my confusion. Yes I would mount them ON the ceiling, not place them IN the ceiling. I agree, IN-ceiling on sloped would probably cause improper imaging issues.
     
  12. JohnRice

    JohnRice Executive Producer

    Joined:
    Jun 20, 2000
    Messages:
    11,455
    Likes Received:
    1,524
    Trophy Points:
    9,110
    Location:
    A Mile High
    Real Name:
    John
    It seems obvious nobody actually looked at the room diagram in the first post...
     
  13. ChucksterMania

    ChucksterMania Auditioning

    Joined:
    Jan 19, 2019
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    10
    Real Name:
    Chuck Colquitt
    I’m sorry, but I’m still confused. If speakers are mounted on the ceiling, which way should the speakers be pointed? Straight down, towards the listener?
     
  14. ChucksterMania

    ChucksterMania Auditioning

    Joined:
    Jan 19, 2019
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    10
    Real Name:
    Chuck Colquitt
  15. John Dirk

    John Dirk Cinematographer
    Supporter

    Joined:
    May 7, 2000
    Messages:
    2,518
    Likes Received:
    947
    Trophy Points:
    4,110
    Location:
    ATL
    Real Name:
    JOHN
    I did and came to the same conclusion as you based on my initial viewing. I try to "stay in my lane" and not represent myself as THE expert when better experts such as yourself are potentially available. This diagram depicts the Atmos fronts being mounted significantly closer to the ceilings peak than the rears. I would call that a non-starter but maybe I'm wrong.
     
  16. Sam Posten

    Sam Posten Moderator
    Moderator

    Joined:
    Oct 30, 1997
    Messages:
    26,874
    Likes Received:
    4,594
    Trophy Points:
    9,110
    Location:
    Aberdeen, MD & Navesink, NJ
    Real Name:
    Sam Posten
    Atmos should never be aimed at a specific position. The only reason we are having this conversation is because of the room setup. Even if your speakers are mounted on a slope your goal should be to aim them straight down not at a specific seat
     
  17. JohnRice

    JohnRice Executive Producer

    Joined:
    Jun 20, 2000
    Messages:
    11,455
    Likes Received:
    1,524
    Trophy Points:
    9,110
    Location:
    A Mile High
    Real Name:
    John
    Sam's right. The topic of "aiming" speakers tends to go overboard. Ideally with speakers, the wider the dispersion, the better, especially with surround systems. The idea with Atmos speakers is where the sound comes from.
     
    Sam Posten likes this.
  18. JohnRice

    JohnRice Executive Producer

    Joined:
    Jun 20, 2000
    Messages:
    11,455
    Likes Received:
    1,524
    Trophy Points:
    9,110
    Location:
    A Mile High
    Real Name:
    John
    Something occurred to me. The AV8805 is a pretty exotic piece of equipment, and it's a surround preamp, not a receiver. I hope you realize it's not self-contained. You need external power amps to make it work.
     
  19. Message #19 of 26 Jan 21, 2019
    Last edited: Jan 22, 2019
    ChucksterMania

    ChucksterMania Auditioning

    Joined:
    Jan 19, 2019
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    10
    Real Name:
    Chuck Colquitt
    I’ve been running a 5.1 system for over 5 years using a Onkyo preamp, a Classe CA-2200 & a Classe CA-3200. So I’m shopping for amps if I do add the Atmo speakers. I have an older Aragon 8008BB, but may use it to bi-amp my fronts. I’m replacing the Onkyo because of a failed HDMI output and noisy channels.
     
  20. ChucksterMania

    ChucksterMania Auditioning

    Joined:
    Jan 19, 2019
    Messages:
    14
    Likes Received:
    0
    Trophy Points:
    10
    Real Name:
    Chuck Colquitt
    In the link below they talk about
    Dispersion requirements: straight vs. aimed

    http://www.acousticfrontiers.com/dolby-atmos-dispersion-requirements-for-ceiling-speakers/

    Did I misunderstand something about aiming speakers?
     

Share This Page