Flathead or Archtop?
Why are bluegrass banjos so heavy? That’s what everyone wants to know when they pick one up. The reason is that higher-end bluegrass banjos are equipped with a metal tone ring-a casting of a brass alloy weighing around three pounds. It rests between the wooden rim and the drum head. A quality tone ring can greatly increase the volume and power of a banjo.
Tone rings are available in two major configurations-an arch-top tone ring provides a somewhat smaller vibrating surface on the head (usually around 9 inches measured side-to-side) for a quicker, brighter sound. A flathead tone ring leaves the entire head (usually 11 inches) free to vibrate, generating more depth and richness of sound. Flathead tone rings are associated with the classic sound of such bluegrass greats as Sonny Osborne, J.D. Crowe, and Earl Scruggs; legendary players who have relied on the brighter sound of an arch-top tone ring include Ralph Stanley, Allen Shelton, Doug Dillard and Steve Martin.