Further development of the high power, high efficiency induction drive compression driver when mounted on a tight pattern horn results in a high performance loud hailer. The detailed performance is tested in an independent laboratory with unique capabilities, including indoor frequency response at a distance of 4 meters. Additional characteristics tested include maximum burst output level, polar response, and directivity balloons. Outdoor tests were also performed at distances up to 220 meters and included speech transmission index and frequency response. Plane wave tube driver-phase plug tests were performed to assess incoherence, power compression, efficiency, and frequency response.

Authors: Buck, Marshall; Graebener, David; Sauro, Ron
Affiliations: Psychotechnology, Inc., Los Angeles, CA, USA; Wisdom Audio; Wisdom Audio Corporation, Carson City, NV, USA; NWAA Labs, Inc., Elma, WA, USA(See document for exact affiliation information.)
AES Convention: 133 (October 2012) Paper Number: 8747
Publication Date: October 25, 2012
Subject: Transducers

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