Soundblox® & Soundcell® CMU

The solution to acoustical correction and noise control problems in masonry construction.

  • Attractive, economical and efficient sound absorbing Concrete Masonry Unit.
  • In-place cost is low by comparison to most other acoustic materials.
  • Meets ASTM-C90 standards.


SOUNDBLOX® units are the solution to acoustical correction and noise control problems in masonry construction. Attractive, economical, and efficient sound absorbing units, SOUNDBLOX® are made locally near the jobsite by carefully selected quality concrete block producers. View Available Soundblox® Sizes


Create an improved environment in architectural masonry acoustics. SOUNDCELL’s design innovation is your practical solution to effectively absorb problem noise, diffuse sound energy and more thoroughly capture flutter echo, standing waves and sound intensity annoyances – with style.

  • CAPTURE & ELIMINATE NOISE: SOUNDCELL utilizes a stacking, slot-type, Helmholtz volume resonator to achieve sound absorption at all frequencies. The 12½ unit offers an unmatched 100% average absorption efficiency at the 100-125-160-200 Hz frequency bandwidth. This low frequency absorption is invaluable in supplying sound control that cannot be captured by carpets, drapes, acoustical tiles and similar items.
  • CONTROL ROOM RESONANCE: A typical square room design with parallel surfaces supports standing waves (notes and noises are sustained louder and longer) at frequencies which are determined by the size of the room. The fundamental resonant frequencies associated with room dimensions fall primarily in the bass (low frequency) range and give the building space a “boomy” quality. SOUNDCELL does not produce opposite parallel surface planes and has an effective 1.2 absorption coefficient at the difficult-to-treat 125 Hz octave band to control the standing wave – resonant frequency effect.
  • IMPROVE SOUND QUALITY: Diffusion is the random reflection and dispersion of the sound path after striking irregular shaped surfaces and reliefs. Many rooms utilizing flat, exposed masonry promote sound ‘bounce’ and problematic reflections. SOUNDCELL improves the quality and nature of sound by providing desirable diffusion with its innovative grid and impressed form.
  • ARREST SOUND ANNOYANCE: Flutter echo is characterized by discrete replications of the original source sound between two highly sound reflective surfaces more than 30 feet apart. Often heard as a high frequency ‘ringing’ or ‘buzzing’, it can be an annoyance to speech intelligibility as well as confusing to the ear. Flutter can be reduced by skewing walls as little as one inch to one foot (1:12). SOUNDCELL has 77% of its surface area skewed to a (3:12) ratio in order to arrest this flutter echo annoyance.