The positioning guidelines found here will work well on most guitars. 

On arched back guitars like Taylor or certain smaller bodied guitars, however, these guidelines will not allow for TWA to function optimally. 

ToneWoodAmp does not need to be placed along the center line of the guitar. Ofsetting TWA from the center line of the guitar is acceptable.  As long as TWA is sitting flat and the transducer is somewhere in the middle of the lower bout of a guitar, it will function properly.

Remember, the placement guidelines are just guidelines. Spend some time experimenting with your TWA in different locations during the dry fit process detailed in the Positioning the TWAmp section of our video manual.