16" X 14" Field-Corps Marching Bass DrumBenefiting from experience and an enviable track record from the worldâs top drum and bugle corps, the 8300 Series Field-Corps⢠Marching Bass Drum features a maple shell and a consistent 14â shell depth throughout the lineup, adding solid power and presence to the bass lineDesigned for top tier marching programs, Field-Corps bass drums provide a deep, resonant tone and punchy attack. From the focused tone of the smallest size to the thunderous boom of the largest model, these bass drums are versatile enough for both indoor and outdoor marching percussion activities.Further details can be found on the Yamaha website.