Proudfoot Company - Industrial Leader in acoustical correction and noise control. QE International B.V - Netherlands based company manufacturing silencers, pulsation dampeners, vent silencers, separators, and active silencers. Roth Acoustical Associates - Noise control consultants providing assistance with industrial, architectural, community and product noise control and acoustic issues. RPG Diffusor Systems - RPG has developed innovative AcousticTools to enhance critical listening and performance spaces since 1983. Same shipping in most cases.
Clients range from churches to rock opera houses.
Accepted internationally by highway and rail authorities. Inc. - Acoustics, sound, theatrical lighting, and AV systems for churches, theme parks, and stadiums. Underwater acoustic releases and underwater timed releases for shallow water operation. Complete on-line catalog of vibration control products. Tecnifoam Noise Control Products - Manufactures sound and noise control products and consults on problems concerning noise.