> > The effect of a tornavoz, is three fold, and similar to the concept of a Helmholtz resonator. When you pluck a string, air is forced in and out of the sound hole, the speed of the air moving in and out determines the frequency of the the air mode of the body of the guitar. The tornavoz acts like the throat of a beer bottle, and if you blow across the top of the bottle you will get a certain note or frequency. The slower the air moves in and out the lower the note or frequency, the faster it moves in and out the higher the note. The second effect is it eliminates the percussive airy attack by inhibiting the speed of the air. On a very light or thin guitar you invariably get a airy percussive attack, and the tornavoz works very well with lightly constructed guitars, the effect is less noticeable and perhaps even detrimental if used on thicker more rigid modern guitars. Third effect is, it rings slightly and give a very pleasant metallic color to the over all tone. Kinda a dark and bright sound all in one. Here is a video of the incomparable Gary Stewart playing a Tornavoz guitar I made for him.

> > http://www.youtube.com/watch?v=MVZr_T8dnbU&feature=plcp

> > http://i1192.photobucket.com/albums/aa3... C_0330.jpghttp://i1192.photobucket.com/albums/aa3... C_0311.jpghttp://i1192.photobucket.com/albums/aa3... C_0313.jpghttp://i1192.photobucket.com/albums/aa3... C_0305.jpghttp://i1192.photobucket.com/albums/aa3... 0295_2.jpg

> Hey, stop posting these enticing pictures, will you? My wife looked

> over the shoulder and said "What??? Looking for another guitar??"