Dynamic speaker drivers have a voice coil embedded in a small gap between magnets, which creates a good deal of motor force. These wires are are always wound up in a circle or perhaps an oval sometimes. This is great for point source applications, but what if we want to make a dynamic line source? I see line source speakers often made of a whole bunch of little tweeters. Why not just stretch the voice coil into a really long oval? It'd be a race track essentially with a long run of wires going up on one side through a long magnetic gap, and then coming down on the other side. This could make a single driver with enough surface area to cover a wide bandwidth with a constant radiation pattern, and all the electromotive force of a dynamic driver. You could even make it into a tall compression driver with great horizontal dispersion and high efficiency.
Is there some physical or electromagnetic reason this couldn't or shouldn't be done? I'm guessing so, because nobody's doing it that I know of.
Is there some physical or electromagnetic reason this couldn't or shouldn't be done? I'm guessing so, because nobody's doing it that I know of.