I need to launch a large sound impulse down a pipe. Thinking of a starter pistol. Banging on the side of the pipe is not good enough. Need a loud pop that I can do over and over. Whatever makes the noise need to be small. Not sure if there is a small loudspeaker that could produce an impulse sharp and loud enough. Do they still make cap pistols? Not sure if toy caps would be loud enough or not.
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