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Patent US4138594 - Small dimension low frequency folded exponential horn loudspeaker with ... - Google Patents | Speaker plans, Speaker design, Speaker box design
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Stream 'In Search Of Perfect Sound' - Denman Exponential Horn Report For BBC World Service 22.06.14 by Robin The Fog | Listen online for free on SoundCloud
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Exponential horn antenna excited by circular ring for bridging outdoor wireless LAN applications | Semantic Scholar
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