Roger Yang`s  major layout idea for master classic guitar building

Stand on point of view of not only carpentry but acoustics engineering to set up classical guitar.

1－Top & side/back---Premium thickness of sounding board and side/back which are much thicker than traditional thin top construction，with dome shape top and back to create proper pressive strength and compressive(tensile)strength while traditional thin construction  guitar is short of tensile strength layout for excellent sound and easy playability.

Dynamic balance design  of bracing pattern system，static balance design for resonance construction。

2--side and back-- major projecting construction(back)is designed with a construction of reflection couple with resonance ,for example, 70% reflection while 30% resonance for high tension master guitar ,the rate between reflection and resonance will  depend on user`s request. An excellent master guitar should be with powerful reflection  to deliver every music note all over concert hall.

3---Cabinet and neck︰According to Ohm`s Law—Piezoelectricity theory with a construction of no energy loss but fully  energy cycle。

4---Premium cabinet air volume construction ----according to different acoustic conditions of every set top and back/side material to decide the proper cabinet air volume guitar to guitar. A proper loading of air volume against string and cabinet construction will ensure the sounding board system with effective and stable vibration。

5— Pay attention to both sides( backward and forward)effective vibration of sounding board.

A traditional thin thickness construction guitar only pays attention to backward vibration  and always unable to iniciate a forward vibration of sounding board owing to  too weak stress cabinet construction layout. Meanwhile a correct phase reverse timing arrangement (proper taping rate of cabinet side thickness from low bout to high bout)will ensure both sides sound wave project out simultaneously for clear and powerful sound.

6--- Use loudspeaker design idea of under-hung voice coil stroke to set up a premium tension cabinet to keep from an over stroke (over-hung)of sounding board vibration from a weak tension cabinet lead to a confused sound performance。

7－Apply prestressed construction idea for carpentry work ,in order to build up a less construction mass with  strong internal stress  for excellent sound and long term stability and easy playability.

8-fully hand tools ,no any machineries for cabinet carpentry work(include binding slot cut) to protect original sounding pipes of tonewood without destruction.  Any wood machinery of planner / sander with either steel gear wheel or ruber roller flattens certainly all fiber pipes within tonewood.

Roger Yang Master Guitar Studio

Roger Yang （Yang Shih-lin)---5F7, No. 148,Quoching Road,Sanxia District, New Taipei City,Taiwan 23741

E-mail: yangguitar@gmail.com   ,  Tel: 886-987614321