In Reply to: Highest Efficiency Home Audio Speaker ever made? posted by bcguitar on April 9, 2014 at 19:59:42:
University sold a hailing horn that was made to be installed on aircraft and ships during the Vietnam era. It had 24 screw-on drivers manifolded into a common horn. I forget the exact numbers but efficiency was high (134dB 1W/1M??). It was capable of very high SPL. Strictly a midrange device.
A little off topic. This is not really a home speaker!
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