Resonator Guitars

A resonator guitar is an acoustic guitar whose sound is produced by one or more spun metal cones (resonators) instead of the wooden sound board . Resonator guitars were originally designed to be louder than conventional acoustic guitars which were overwhelmed by horns and percussion instruments in dance orchestras and Blues Bands . They became prized for their distinctive sound, however, and found life with several musical styles most notably bluegrass and also blues well after electric amplification solved the issue of inadequate guitar volume levels..

Resonator guitars are of two styles:
Square necked guitars designed to be played in steel guitar style.
Round necked guitars, which may be played in either the conventional classical guitar style or in the lap steel guitar style.

There are three main resonator designs:
The "tricone" ("tri" in reference to the three metal cones/resonators) design of the first National resonator guitars.
The single cone "biscuit" design of other National instruments.
The single inverted-cone design of the Dobro®.

Many variations of all of these styles and designs have been produced under many brands. The body of a resonator guitar may be made of wood or metal, Typically there are two main sound holes, positioned on either side of the fingerboard extension. In the case of single cone models, the sound holes are either both circular or both f-shaped, and symmetrical; The older "tricone" design has irregularly shaped sound holes. Cutaway body styles may omit the lower f-hole.

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