Sonex Rondo Baffles

SONEX Rondo Baffles offer design versatility and exceptional acoustical properties. Easy to install vertically or horizontally, SONEX Rondo is ideal for a broad range of interior spaces, including conference rooms, reception areas, libraries, production facilities and stadiums.

  • Vertical or horizontal configurations for design flexibility
  • Exceptional sound absorption across all frequencies
  • Easy installation
  • Class 1 fire-rated

Installation Information

  • Can be hung vertically or horizontally, above or below ceiling lights
  • The distance between hanging absorbers and the ceiling has little effects on acoustic performance

Wall-to-Wall Cable Mount Installation

  • Recommended for large, open areas
  • Baffles are arranged Parallel with each other
  • Spacer bars may be used for arrangement and placement of baffles along the cable span

Ceiling Mount Installation

  • Avoid hanging baffles more than 10’ below ceiling (long tethering may cause baffles to sway in areas with strong air current)
  • Use 1/16” cable or lightweight chain to hang baffles from the ceiling
  • Attach cable or chain to ceiling by looping it around ceiling joists or trusses (Anchoring eyes can also be used. Install them into the ceiling before you begin.)
  • Once cable or chains are in place, attach the bottom end of the cables or chains to the eye loop on top of the corkscrew hanger
  • Reception areas
  • Conference rooms
  • Multipurpose rooms and gymnasiums
  • Aquatic centers and indoor pools
  • Music and classrooms
  • Manufacturing facilities
  • Stadiums
  • Nearly any interior space

Physical data – willtech foam

Material Opne-cell melamine- based foam
Density 0.5 to 0.7 lbs./cu.ft.(ASTM D3574-77)
Long-Term Service Temperature 3020F(1500C)
Fire Resistance Class 1 per ASTM E 84 Meets UL 1715(willtec natural)
Flame Spread per ASTM E84 Natural 5
Smoke Density per ASTM E84 Natural 50
Microbial Growth Passes UL 181,Section 11
Fungus Resistance Rating 0 per ASTM G21
Finishes Natural(white and light grey)

Finish Thickness Sabins per Baffle per ASTM C423( J-Mount )
125Hz 250Hz 500Hz 1KHz 2KHz 4KHz Ave.
Natural 6* diameter

( white or light grey )

0.30 1.04 2.73 3.54 3.57 3.42 2.43


Finish Thickness Sound Absorption per ASTM C423( J-Mount )
125Hz 250Hz 500Hz 1KHz 2KHz 4KHz NRC
Natural 6* diameter

( white or light grey )

0.08 0.30 0.77 1.00 1.01 0.97 0.75

This product is manufactured by pinta acoustic, inc. and marketed by Memtech Acoustical, LLC