I wish to attach a rare earth magnet to pieces of wood and to acoustic guitars and drive the magnet with a signal generator through an amplifier to a coil. In essence, turning the wood into a loudspeaker. The purpose is to find the resonant properties of wood used to make guitars prior to manufacture and then again at different stages of manufacture.
I've come across a method in principle but with no specific details. I have very poor knowledge about electronics and circuitry. If any one can tell me what kind of amplifier specifications I need, what kind of coil specifications, how to wire everything and what things to pay attention to ensure that everything I source is compatible then I would be very grateful for the help.
The signal generator will sweep over a range to cover 50Hz to 2500Hz in about 2 minutes. The computer audio output goes to the amplifier, which needs to boost the signal enough to drive the wood to audible levels.
The sound can be recorded and analysed and modes of vibration can be discovered. All of this helps to make a better grade and quality of guitar with greater consistency of final performance properties.