Cinepolis Hamlin – Case Study

Movie theaters have a particular type of challenge when it comes to soundproofing and acoustics. The biggest issue many theaters face is low-frequency sounds penetrating through auditorium walls and disturbing guests. This is especially true in luxury cinemas where guest comfort and sound privacy is of the utmost importance for repeat business and satisfied online reviews. While an STC of 65 may be sufficient to hit THX and other industry-specific requirements, it does not go nearly far enough in its focus on low-frequency attenuation.

With today’s common construction methods, a typical answer to low-frequency sound transmission is to add multiple layers of drywall to an auditorium partition. Although more Mass is added to the wall with this construction, the result is diminishing returns with each layer of drywall added due to the stiffness of the drywall itself.

Commercial Acoustics was contracted to improve acoustics for the Cinepolis cinema chain nationwide. By analyzing the architectural drawings and testing various assemblies at Riverbank Acoustical Laboratories, Wall Blokker was the chosen product to achieve a high STC partition while also reducing construction schedule and costs. Instead of using multiple layers of drywall, Wall Blokker soundproofing membrane was added to both sides auditorium partitions.

Both the flexibility of the Wall Blokker membrane and it’s 1 lb/sf Mass provided improved sound quality within their auditoriums. Commercial Acoustics also custom-manufactured the membrane to the 33′ deck height, eliminating cutting and added waste in the field. By moving to Wall Blokker, 3 weeks of construction schedule were saved as installation was faster and less labor-intensive than drywall-only assemblies.