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Engineering Brief

Design and Implementation of a Constant-Directivity Two-Way 12” Woofer Wedge Loudspeaker System

Authors: Keele, Jr., D. B. (Don); Sarvis, Hugh

AES Convention 143 · Paper 377 · October 2017

Abstract

This paper describes the design and implementation of a two-way constant-directivity wedge loudspeaker system that houses a single 12” woofer and eight 2” drivers in a 20° circular arc mounted on a curved baffle that covers the LF driver. An individual system comprises a 20° wedge box with a four-channel plate amplifier with two bridged channels driving the woofer, and the two other channels individually driving each half of the eight-driver array. This basic wedge box is then used in multiples to form larger circular-arc arrays of one up to six boxes making arrays that provide various vertical beamwidths in the range of 15° to 90°. Appropriate amplifier gains are chosen to smooth the polar coverage for each array size.

Details

Published in
AES Convention 143
AES Convention
143
Paper number
377
Publication date
October 6, 2017
Session subject
Transducers
Affiliation
DBK Associates and Labs, Bloomington, IN, USA; Presonus Audio Electronics-Worx Audio Technologies, Baton Rouge, LA, USA (See document for exact affiliation information.)
Type
Engineering Brief