Current feedback is a versatile method of modifying the behavior of a loudspeaker driver, with opportunity for linearization and matching the driver to the enclosure design targets, but depending on the chosen approach a potential risk of increasing the effects of either voice coil impedance variation or driver mechanical parameter nonlinearity. This work compares using a nonlinear simulation model various forms of current feedback, including current drive, finite positive or negative amplifier resistances, and negative resistance combined with a reactance.

Author: Backman, Juha
Affiliations: Huawei Technologies, Tampere, Finland; Genelec Oy, Iisalmi, Finland(See document for exact affiliation information.)
AES Convention: 145 (October 2018) Paper Number: 10059
Publication Date: October 7, 2018
Subject: Transducers—Part 2

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