'Modulus Guitars' is an
American manufacturer of
musical instruments, most notably
bass guitars built with
carbon fiber necks. The company, originally called Modulus Graphite, was founded in part by
Geoff Gould, a bassist who also worked for an
aerospace company in
Palo Alto, California.
Traditionally,
electric guitar and bass necks are made from
hardwoods (such as
maple or
mahogany) reinforced with an adjustable steel "
truss rod." Wood, being a naturally occurring material, is prone to variations in density and flexibility. This, coupled with the high stresses created by stretching steel strings across them lengthwise, makes wood necks prone to certain unpredictable and undesirable qualities. Among these are twisting, incorrect "bowing" (either too pronounced or too subtle), and "dead spots," or areas on the neck where notes are quieter or more indistinct compared to other areas. Non-traditional neck materials such as carbon fiber and aluminum are attempts to correct these issues by replacing wood with lighter, stiffer components.
Gould was inspired to experiment with non-traditional materials after attending a
1974 Grateful Dead concert, at which he marveled at the size and complexity of
Phil Lesh’s heavily modified bass (customized by
Alembic) and began to consider the possibilities of lighter, stronger materials. After being passed on by his employers in the aerospace industry, the project of creating hollow, carbon fiber bass necks was brought to fruition by Gould and Alembic, who built a bass with a prototype neck and displayed it at a trade show in
1977. (Immediately after the trade show, the bass was purchased by
Fleetwood Mac bassist
John McVie.)
Instruments
★
★ Quantum Bass
★
★ Modulus VJ Bass
★
★ FleaBass

Flea with his famous "Circle Jerk Punk-Rock" Bass
Gould and some of his colleagues in the aerospace industry founded Modulus Graphite and began to make necks for Alembic and other companies before moving on to making entire instruments.
Notable Modulus players include
Flea,
Phil Lesh,
Stefan Lessard,
Me'shell Ndegeocello,
Mike Gordon, David Schools of
Widespread Panic,
Alex Webster of
Cannibal Corpse and
Jeff Ament.
Flea from the
Red Hot Chili Peppers has a signature bass of Modulus, "The FleaBass".
External links
★
Modulus Guitars