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Dynamat DynaBox

Isolation enclosure for in-ceiling speakers

Item # 15450306

This clever foam enclosure surrounds the back of an in-ceiling speaker for improved performance and protection.

This clever foam enclosure surrounds the back of an in-ceiling speaker for improved performance and protection.

Item # 15450306

In stock
$169.99

About the Dynamat DynaBox

Elevate the performance of in-ceiling speakers

In-ceiling speakers are an excellent option for a stealthy music or home theater system. But much of the sound they produce can end up leaking into the room above. A good solution for this is the Dynamat DynaBox.

Elevate the performance of in-ceiling speakers

In-ceiling speakers are an excellent option for a stealthy music or home theater system. But much of the sound they produce can end up leaking into the room above. A good solution for this is the Dynamat DynaBox.

This flexible foam enclosure helps an in-ceiling speaker deliver focused, well-balanced sound in your listening space while reducing audio bleed-through to the adjacent room. You'll get more sound where you want it, and less noise and vibration where you don't.

How it works

The DynaBox is made of flexible vinyl that allows it to be collapsed for retrofit installation. You actually fold the enclosure and push it up through the hole you've cut in the ceiling for your speaker. Once the box is in place, line it with the two supplied sound absorbers: the SoundSnake acoustic decoupler, and Back-wave foam panel. 

Of course, the DynaBox works great for new construction, too. Click on the "Details" tab for step-by-step installation instructions.

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Product highlights:

  • reduces the amount of sound and vibration passing through the ceiling to the adjacent room
  • helps ensure well-balanced sound in your listening space while protecting against dust and dirt
  • included installation components absorb unwanted noise while controlling cabinet resonances
  • UL-rated
  • enclosure dimensions: 17"W x 12"L x 6-1/2"D
  • warranty: 60 days
  • Our 60-day money-back guarantee
  • MFR # 50306

What's in the box:

  • DynaBox (rubber enclosure)
  • SoundSnake (two layers of foam)
  • Back-wave foam (egg-crate style foam)
  • Installation Instructions

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More details on the Dynamat DynaBox

Stacey B.

Product Research

Features

Overview: DynaBox is a revolutionary acoustic barrier for in-ceiling speakers. DynaBox consists of a combination of flexible sound barrier vinyl, the SoundSnake acoustic decoupler, and noise absorbing back-wave foam. DynaBox completely encases the speaker, which effectively reduces sound migration between rooms, ceilings, & floors. DynaBox projects more clear sound into the room & reduces unwanted sound traveling outside the room.

DynaBox: DynaBox is a unique retro-fitable ceiling speaker enclosure that completely encases the speaker, effectively reducing sound migration between rooms, ceilings and floors.

  • Appearance: Black flexi-vinyl barrier
  • Color: Charcoal Gray
  • STC (Sound Transmission Class): 28
  • Mass: 1 lb per square foot
  • Material Thickness: 0.09"
  • Temperature Range (Resistance): -40°F to +220°F
  • Chemical Resistance: Resistance to water & mineral oils
  • Dimensions: 17" (w) x 12" (h) x 6.5" (d)

Back-wave Foam: The back-wave foam features an egg-crate style foam design with a self-adhesive backing. Its designed to adhere to the inside back of the DynaBox. The back-wave foam helps to absorb any unwanted noise.

  • Mass: 0.16 lb/ft²
  • Density: 2.0 lb/ft³
  • Tensile Strength: 15 psi
  • Thermal Conductivity (R): 1.9 (Hr-ft²-deg.F/BTU)
  • Standards: Meets UL94 HF-1
  • Temperature Range (Resistance): -40°F to +225°F
  • Dimensions: 13.5" (w) x 9" (h) x 1" (d)

SoundSnake: The SoundSnake is a two-layer acoustic decoupler which consists of Foam & Dynil. It's designed to go around the inside edges of the DynaBox. The SoundSnake works to prevent unwanted noise transfer outside the room while creating an optimal acoustic environment in the room.

  • Foam:
    • Thickness: 1.5"
    • Density: 2.0 lb/ft³
    • Tensile Strength: 15 psi
    • Thermal Conductivity (R): 1.9 (Hr-ft²-deg.F/BTU)
    • Standards: Meets UL94 HF-1
    • Temperature Range (Resistance): -40°F to +225°F
  • Dynil:
    • Appearance: Black flexi-vinyl barrier
    • Color: Charcoal Gray
    • STC (Sound Transmission Class): 28
    • Mass: 1 lb per square foot
    • Thickness: 0.09"
    • Standards: Meets UL94-V0
    • Chemical Resistance: Resistance to water & mineral oils
    • Temperature Range (Resistance): -40°F to +220°F

Note: Total dimensions of SoundSnake are 1.5" (w) x 5.5" (h) x 54" (long)

Installation Instructions: DynaBox features a flexible design which enables it to be completely collapsed for easy retrofit installation. DynaBox can also be installed in new construction.

  • Step 1 (Prep Box): Ensure the ceiling hole is cut to fit your in-ceiling speaker installation requirements. See your speaker installation instructions for complete directions & template. Using a razor knife, cut the DynaBox hole to fit your in-ceiling speaker, as well. If running speaker wires inside the box, cut a small slit on the side of the box to run wires (speaker wires can be run inside or outside of the DynaBox).
  • Step 2 (Insert Box): Tightly roll box with the hole on the inside. Grip box tightly and place through the existing ceiling opening. Expand box and position over ceiling opening.
  • Step 3 (Insert SoundSnake): Tightly roll the SoundSnake with the wider foam side toward the inside of the roll. Grip tightly and place through the existing ceiling opening in to the DynaBox. Expand and adjust to line the inside walls of the box. The smaller foam side of the SoundSnake should be toward the outside of the box.
  • Step 4 (Insert back-wave Foam): Remote the white paper backing from the back-wave foam. Fold in half with sticky side out. Place through opening and apply the self adhesive (sticky) side to the top of the box.
  • Step 5 (Seal Box): Apply a bead of contractors glue or silicon caulking around the outside perimeter of the DynaBox hole.
  • Step 6 (Install Speaker): Follow the manufacturer's instructions for your in-ceiling speaker installation.

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