by KCStudly » Fri May 04, 2018 6:22 am
The way I understand it, an exciter is just the magnet coil and core (weight) with no surround or diaphragm. Where as a speaker uses the magnet to move the core, and thus "drive" the cone to move air and form a sound wave, the exciter needs to be attached to a free hanging baffle, so that it can move the baffle and thus move air. If the baffle is not free to move it won't, and if it is not rigid it will just wiggle, and thus will not move air with authority. So a wall or cabinet door will probably not yield very good results; the panel needs to be suspended by something flexible, like fishing line.
Similar to free air speakers, or baffled chambers, the sound from panels can be a bit muddy because the air is moved in multiple directions, allowing some of the sound waves to cancel each other. I have always preferred sealed enclosures. They have to work a lot harder to compress and expand the sealed volume of air (hence greater power requirements) but because of the directed sound wave, they give a much cleaner crisper sound to my ear.
KC
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