Dynamic Driver Current Feedback Methods

Backman J. Dynamic Driver Current Feedback Methods. In: AES Convention 146. Audio Engineering Society; 2019. Paper 10152. Available from: https://aes.org/publications/elibrary-page/?id=20285

@inproceedings{Backman2019_20285,
  author = {Backman, Juha},
  title = {{Dynamic Driver Current Feedback Methods}},
  booktitle = {AES Convention 146},
  note = {Paper 10152},
  year = {2019},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20285}
}

TY  - CPAPER
TI  - Dynamic Driver Current Feedback Methods
AU  - Backman, Juha
T2  - AES Convention 146
M1  - Paper 10152
PY  - 2019
DA  - 2019/03/06
UR  - https://aes.org/publications/elibrary-page/?id=20285
PB  - Audio Engineering Society
LA  - en
AB  - 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, and the current feedback approach needs to be designed to keep these effects well controlled for the intended application. This work compares using a nonlinear simulation model various forms of current feedback, including current drive, finite positive or negative amplifier resistances, negative resistance with reactance. This final part of the work extends the examples given in the earlier papers and presents a feedback approach that would appear to offer benefits in both distortion and thermal compression control.
ER  -