Bass Drum: Brief Description — Vienna Symphonic Library
“The bass drum covers the bass register within the orchestra percussion section, while the tenor drum corresponds to the tenor, the snare drum to the treble register.”
Bass Drum: The Orchestra Up Close — Orchestre Métropolitain
“The bass drum is made of a cylindrical wooden frame called the shell, with two thin sheets of plastic pulled taut across either side to create the drum heads.”
Drums: Instrument Studies for Eyes and Ears — Jacobs School of Music
Instrument Studies for Eyes and Ears, by Don Freund, site designed by Reid Merzbacher
Percussion: The Orchestra: A User's Manual — Andrew Hugill
“The aim of The Orchestra: A User's Manual is to provide information about the orchestra, orchestration, composition and instruments, for the benefit of anybody with an interest in the subject.”