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Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2 Beige

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The Primacoustic Cumulus is a triangular broadband acoustic corner trap that effectively absorbs sound from 125Hz and up. Designed to fit in corners...Click To Read More About This Product

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OVERVIEW

Get rid of room boominess with stylish ceiling corner traps.

The Primacoustic Cumulus is a triangular broadband acoustic corner trap that effectively absorbs sound from 125Hz and up. Designed to fit in corners where the walls and ceiling meet, the Cumulus takes advantage of the natural propagation of sound that occurs in all rooms. Sound waves follow the wall and ceiling planes and accumulate in the corners, a well known hot spot in small recording rooms or theater.

The Cumulus is amazingly compact. Each side is 24" in length and, when in place, creates a 12" deep air space cavity behind the panel that increases the bass absorption characteristics. Mounting Cumulus traps in a studio will generally yield a significant reduction in the problematic low-mid region while leaving the architectural design of the room virtually intact. Invisible mounting is achieved using spring-tensioned clasps and a single eye-screw. Mounting literally takes minutes and because of the reverse beveled edges Cumulus traps flush mount 'seamlessly' into the room esthetics.

This makes the Primacoustic Cumulus the perfect acoustic starting point for rooms such as home theaters or smaller production suits that have limited wall space and suffer from saturation of lower mid-range frequencies (known as 'boomyness'). The strategic placement of the Cumulus in the ceiling corners plus the air cavity it creates there, helps flatten out low-mid room response.

Cumulus Details and Development

Sound travels through the air in the form of waves. It is well known that walls and ceilings act as waveguides that direct the sound waves into the corners. This is the primary reason why acousticians always start by treating the corners. In essence, you get the most performance with the least material. But even though acousticians have long identified the benefits, the difficulty of mounting acoustic panels in corners and lack of ideal mounting options have discouraged people from taking advantage of this prime room location.

The Primacoustic Cumulus presents a simple and elegant solution. It is a surprisingly basic acoustic device combined with ingenious mounting hardware. Once installed, the Cumulus looks terrific and is highly effective at reducing low-mid frequencies that are attributed to 'boomyness' in a room. The magic lies in both the quality of the acoustic panel, its innovative design and the corner mounting location.

The 24" triangular Cumulus panel is made from high density 6lb per cubic foot rigid fiberglass. The same material broadcasters and world-class studios have used for years to control room acoustics. The panel is fully encapsulated within a micromesh and employs resin hardened edges. These panel treatments combine to ensure the minute glass fibers cannot escape and produce pleasing architecturally straight lines. The 2" thick panel is then covered in an acoustically transparent fabric.

The edges of the Cumulus trap are reversed beveled and form a wedge shape that naturally transitions from the walls and ceilings to create an elegant corner trap. When mounted, the 24" sides create an air cavity behind the panel with a depth of 12 inches. It can be determined, by using quarter wavelength calculations, that the air cavity the Cumulus creates will effectively attenuate frequencies down into the 125Hz region while the panel surface effectively absorbs high frequencies from 400Hz and up. This is what makes the Primacoustic Cumulus a broadband noise absorber.

Once in place, you will immediately notice a tighter more defined bottom end. All small rooms tend to suffer from excessive low-mids and this is exactly where the Cumulus can be most effective. Because the front panel is completely open, it also helps reduce flutter echo and standing waves.

FEATURES
  • Triangular focal point trap mounts in the corners
  • Highly effective in small rooms due to sound migration
  • Unobtrusive design fits any dcor
  • Quick and Easy to mount
  • Set of 2
SPECIFICATIONS
  • Core Material: Formed, semi rigid inorganic glass fibers
  • Density: 6.0 lbs. (2.72kg/m3) per cubic foot
  • Fabric Facing: Acoustically transparent polyester
  • Fabric Color Codes: Black=00, Beige=03, Grey=08
Reviews
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Review Snapshot

by PowerReviews
PrimacousticCumulus Broadband Ceiling Corner Trap - Set of 2
 
4.4

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (5)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

83%

of respondents would recommend this to a friend.

Pros

  • Improves sound (6)
  • Good quality (5)
  • Easy to use (4)
  • Functional (4)

Cons

No Cons

Best Uses

No Best Uses
    • Reviewer Profile:
    • Experienced (4)

Reviewed by 7 customers

Displaying reviews 1-7

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(1 of 2 customers found this review helpful)

 
5.0

Just What I needed

By Nathalia Hencker

from Undisclosed

Comments about Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2:

If you are looking to improve the sound of your studio I totally recomment this investment.
I ordered the Cumulus from Musician's Friend and I have to say I wqas so happy with my purchase I ordered 4 more to add to the sound of my studio. They arrived promptly and even though a pair was used it was in mint condition. I have installed them and they have made a huge difference in the sound quality of my studio. They also look great and add a nice touch to the room. I totally recommend them!

 
5.0

They Make Sense

By JP

from Spaulding Il

About Me Experienced

See all my reviews

Verified Buyer

Pros

  • Easy To Use
  • Improves Sound

Cons

    Best Uses

      Comments about Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2:

      I already had foam on the first reflection points in my room and needed low frequency absorption.The tri corner concept made sense to me. I used one in each corner and along with some other basic speaker placement concepts , it really improved the sound of my room. They look great too.

       
      5.0

      Forget Auralex, Primacoustic is where it is at!

      By progdrummermark

      from Westminster, CA

      About Me Professional Musician

      Verified Buyer

      Pros

      • Easy To Use
      • Good Quality
      • Improves Sound

      Cons

        Best Uses

        • Recording Studios
        • Rehearsal Rooms

        Comments about Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2:

        These panels are fantastic. I put two up in the corners adjacent to my studio monitors. WOW, the low end got cleaned up, and the mids are tighter. I would definitely recommend adding the Cumulus to any acoustic treatment system.

         
        4.0

        Very space efficient; Tricker to install than expected

        By natebernstein

        from NJ

        About Me Experienced

        Verified Reviewer

        Pros

        • Functional
        • Good Quality
        • Improves Sound

        Cons

        • installation materials could be clearer
        • not enough color options

        Best Uses

          Comments about Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2:

          I installed these in my small basement studio. For various reasons I won't get into here I can't put traditional, bigger bass traps in the corners or the front wall near my monitors. These are a great alternative, as the triangular design means they only protrude a tiny bit down from the ceiling into the corner. I actually have doors in each front corner of my space and these fit above where the doors open so that I can still use the doors with the traps installed. They certainly don't absorb as much or as low as a full/bigger trap, but they do make a difference. The installation method is actually very clever and well thought out. One word of caution: if you're installing in a drop-ceiling tile, use the wall anchors. I first tested the screw alone (without using anchor) on a spare tile and it held reasonably well. I couldn't pull it out with a fair amount of force, for example. But when I actually tried to install the tension from the cable ties and springs pulled the screw out of my ceiling tile. Fortunately that hole was still small enough that I could install the anchor, and that method worked perfectly. Make sure the anchor opens up fully behind the ceiling tile before you insert and tighten the screw. Also, thread the cable tie through the ring on back of the panel and the ring on the mounting screw so that the end you're pulling on points down toward the floor, and make sure as you begin (before you start pulling down on the cable tie) that the panel is in the same position as it will rest once installed (one flat edge flush with the ceiling). For me it took a bit of trial and error (one cable tie broke on first attempt so I had to buy some more). But if I knew in advance what I just wrote here, it would have been a snap (and was after the first failed attempt).

           
          5.0

          Extremely effective use of $$ to improve your audio system

          By Audiojunkie

          from Utah

          About Me Professional Musician

          Verified Buyer

          Pros

          • Easy To Use
          • Functional
          • Good Quality
          • Improves Sound

          Cons

            Best Uses

              Comments about Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2:

              I already have an acoustically treated room with absorption panels and 12" deep diffusors. Done professionally. The effect of these panels FAR exceeded my expectations.

               
              5.0

              Very effective.

              By zoomduck

              from NorCal

              About Me Experienced

              See all my reviews

              Ask me a question

              Verified Buyer

              Pros

              • Easy To Use
              • Functional
              • Good Quality
              • Improves Sound

              Cons

                Best Uses

                  Comments about Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2:

                  These made a big difference to the reflections in my home studio. Simple installation.

                   
                  2.0

                  Works

                  By kennym 9898

                  from springfield, nj

                  About Me Experienced

                  See all my reviews

                  Ask me a question

                  Pros

                  • Functional
                  • Good Quality
                  • Improves Sound

                  Cons

                  • Expensive

                  Best Uses

                  • Studio

                  Comments about Primacoustic Cumulus Broadband Ceiling Corner Trap - Set of 2:

                  They work on controlling the bass in a room. Install them with music playing and you'll hear the difference. For what they are versus the price it's a hard pill to swallow considering the amount of square footage they are. You only get 2 of them, pricewise 4 would be ok for the price at the current increase.

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