Why do Reference Series shells have different shell specs?

To fully understand the Reference Series you must understand that the desired tonal characteristics of a 10" tom are completely different than that of a 22" bass drum. Thus to use the same material in both drums would result in a compromise. Reference Series drums use a combination of task specific bearing edges and three types of proven woods, Birch, Maple, and African Mahogany. Click here for more information about the Reference Series.