Data Sheet Whisperwave® Ribbon Sound Baffle Data Sheet
Installation Guide Installation Guide for Sonex® Hanging Baffle
Cleaning Guide Acoustic Foam Cleaning Guide
LEED Statement Sonex® Acoustic Foam LEED Statement
  1. What is HPC Coating?
  2. HPC is a high-performance coating that is applied to acoustical melamine foam base. Our exclusive water based HPC formulation improves durability and protects the acoustical foam from dust and dirt, allowing the surface to be cleaned using a damp cloth. The HPC coating is especially appropriate for use high-traffic areas. HPC Premium extends the HPC coating further by offering a line of brilliant colors from which to choose.

    • HPC Coating for Wall and Ceiling Panels:
      • Coating is applied to the panel face and edges.
    • HPC Coating for Hanging Baffles and Clouds:
      • The coating will be applied to all exposed edges and sides.
    • HPC Coating for Drop-In Ceiling Tiles:
      • All necessary edges will be coated to provide a finished appearance.
  3. Are custom HPC colors available?
  4. Custom HPC colors are available. Popular paint brands may be combined with our exclusive HPC formulation to produce unique designs for any project.

    To produce an order for custom HPC colors, please be aware of the following.

    • There is a minimum requirement of 700 square feet of Sonex® acoustical foam.
    • We require the brand name, paint color and number.
    • There is a set up fee is for each custom color.
    • We require a deposit for the order.

    Customers with an order for custom HPC colors will receive a sample to approve prior to producing the order.

Whisperwave® Ribbon Sound Baffle

(6 customer reviews)


Size: 1' x 4'
Thickness: 2"
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The Whisperwave® Ribbon Sound Baffle allows you to unleash your creativity while reducing noise and reverberation. Add dimension and acoustical control right where you need it the most with Whisperwave® Ribbons. Suspend Whisperwave® Ribbons from ceiling-mounted cables using corkscrew hangers (Sold Separately). They may be hung as high or as low as necessary to avoid obstacles in the ceiling, work around HVAC or to achieve a particular design.

Made from Class 1 fire-rated melamine foam, Whisperwave® products are offered in standard and custom sizes and curve patterns. Whisperwave® products are lightweight and easy to install. Suspend these ceiling baffles using 1.5″ corkscrew hangers & cable (Sold Separately). The corkscrew hangers pierce and screw into the back of the foam baffle to provide an attachment point for wire or cable. Appropriate hardware to mount cables or wire to your ceiling may be purchased locally or provided by your installer. Our Whisperwave® products are available in natural grey, natural white or may be HPC Coated to add color and additional protection (see HPC color chart.)


  • Reduces echo and reverberation
  • Improves speech intelligibility
  • Exceptional acoustical performance
  • Mold-resistant, fire-retardant

Technical Information for Whisperwave® Ribbon Baffle:

  • Size: 4′ x 1′
  • Thickness: 2″
  • Part Numbers: WRB-2, WRB-2HW
  • Material: Open-cell melamine-based foam
  • Finishes: Natural Grey, Natural White or HPC Coated
  • Density: 0.5 to 0.7 lbs./cu. ft. (ASTM D3574-77)
  • Fire Rating: Class 1 per ASTM E84
  • Microbial Growth: Passes UL 181, section 11
  • Fungus Resistance Rating: #0 per ASTM G21
  • NRC (Sound Absorption Performance)
    • Natural Grey or Natural White – 2″ (0.85)
    • HPC Coated – 2″ (0.95)
Sound Absorption (Hz)
Sabins per (ASTM C423-90a)

Installation Method:

  • Install corkscrew hangers (Sold Separately) in the field for ceiling-mounted cable installation (cable and cable mounts may be provided by installer)
  • Avoid hanging baffles more than 10 feet below the ceiling, as long tethering will cause them to sway in air currents.
  • For best results, install this product at the end of your construction project.
  • Use clean gloves to prevent soiling material.
  • Melamine foam is fragile, please handle with care.
  • Do not install material of unacceptable quality.

For more information on our Whisperwave® Ribbon Sound Baffle,
call us at 800.782.5742 or contact our sales department.

Customer Reviews

6 reviews for Whisperwave® Ribbon Sound Baffle

  1. Verified Customer

    Used product to control echo in office space.

  2. Verified Customer

    Looks good and did a reasonably good job. It controlled the echo reverberations in the Yoga Lobby that has 14′ ceilings and solid surfaces.

  3. Verified Customer

    Worked and looked great

  4. Verified Customer

    Used for sound dampening where wall meets the ceiling. They were real easy to install within minutes. Visitors love the flowing look. They clean up the soundstage and bring out details in the recording.

  5. Verified Customer

    Used to help sound proof a larger training room.

  6. Verified Customer

    The product is great. It's hanging in our large and small conf rooms and our CEO office. Made an immediate and dramatic difference in sound dampening.
    Panels are very fragile and puncture easily. As they are white inside they become useless if punctured. Future orders should be sent with a matching sharpie or other way to mask the dings.