About KELLER Shells
As a leading drum shell manufacturer for nearly 70 years, Keller knows what it takes to build long-lasting, high-quality shells. In fact, many of the quality drums and kits were created by Keller in the 60's and 70's which helped define a new era in music. All of VSS drum shells are made from 100% choice hard woods that have undergone rigorous selection and screening processes. In addition, they are created using Keller's state-of-the-art stagger seam lamination process.
VSS™ (Vibrating Sound Source), a patented Keller Products innovation, uses space-age technology to condition each shell. VSS™ technology results in regenerated vibrations that elevate head response and increase drum performance thus delivering a wider tonal range, more resonant frequencies and increased volume for longer, louder and warmer sounds
In general, a thinner wall thickness (6ply) gives the drum more of a fluf/poofy sound while a thicker (10-Ply) has a larger amplitude and sound waves which are closer together.
