After some research I was able to find a relatively cheap solution to build a megaphone suitable for street demonstrations. A megaphone hardly needs an introduction but, a megaphone is a portable and ...
NORTHBROOK, Ill.--(BUSINESS WIRE)--For powerful sound coverage that stands up to water, dust, heat, and cold, AmpliVox Sound Systems introduces the new Made in the USA Pro Marine Megaphone, model ...
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