Abstract: A soundboard for an acoustic guitar is made of a composite-materials plate having an area density matching that of wooden soundboards while having a bulk density exceeding the bulk density of wooden soundboards. The soundboard is preferably made of a lay-up of woven polymer (preferably aramid) fabric and a layer of unidirectional graphite fibers followed by a layer of decorative fabric (e.g., silk), all embedded in a resin matrix. The side and back are made of at least one layer of woven fabric embedded in a resin matrix. The neck is made of a foam plastic core preferably covered with a woven fabric layer and a decorative fabric layer embedded in a resin matrix. The head is preferably cast of fiber-filled thermoplastic covered with a fabric layer embedded in a resin matrix. The head and neck are channelled to receive a composite-materials reinforcing rod, a fret board of similar material being bonded thereto.

Abstract: A soundboard for an acoustic guitar is made of a composite-materials plate having an area density matching that of wooden soundboards while having a bulk density exceeding the bulk density of wooden soundboards. The soundboard is preferably made of a lay-up of woven polymer (preferably aramid) fabric and a layer of unidirectional graphite fibers followed by a layer of decorative fabric (e.g., silk), all embedded in a resin matrix. The side and back are made of at least one layer of woven fabric embedded in a resin matrix. The neck is made of a foam plastic core preferably covered with a woven fabric layer and a decorative fabric layer embedded in a resin matrix. The head is preferably cast of fiber-filled thermoplastic covered with a fabric layer embedded in a resin matrix. The head and neck are channelled to receive a composite-materials reinforcing rod, a fret board of similar material being bonded thereto.