MAKE A MEME View Large Image 電気メガホンEM-202.JPG electric megaphone or bullhorn Developed in 1954 this was the first truly handheld public address system; previous portable P A systems were very heavy because of the vacuum tubes needed to power them ja ...
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Keywords: 電気メガホンEM-202.JPG electric megaphone or bullhorn Developed in 1954 this was the first truly handheld public address system; previous portable P A systems were very heavy because of the vacuum tubes needed to power them ja 電気メガホンEM-202 私物 私 2009 Megaphones
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