The Design of a High Efficiency Servomotor-Driven Subwoofer

Danley TJ, Mapes-Riordan D. The Design of a High Efficiency Servomotor-Driven Subwoofer. In: AES Convention 89. Audio Engineering Society; 1990. Paper 2978. Available from: https://aes.org/publications/elibrary-page/?id=5715

@inproceedings{Danley1990_5715,
  author = {Danley, Thomas J. and Mapes-Riordan, Dan},
  title = {{The Design of a High Efficiency Servomotor-Driven Subwoofer}},
  booktitle = {AES Convention 89},
  note = {Paper 2978},
  year = {1990},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=5715}
}

TY  - CPAPER
TI  - The Design of a High Efficiency Servomotor-Driven Subwoofer
AU  - Danley, Thomas J.
AU  - Mapes-Riordan, Dan
T2  - AES Convention 89
M1  - Paper 2978
PY  - 1990
DA  - 1990/09/06
UR  - https://aes.org/publications/elibrary-page/?id=5715
PB  - Audio Engineering Society
LA  - en
AB  - A new low-frequency loudspeaker driver is presented which overcomes many deficiencies of traditional voice-coil drivers. This driver incorporates a low-inertia DC servomotor to provide large, linear excursion. The electroacoustic circuit model and the corresponding Thiele-Small parameters are developed for the servomotor driver and are compared to the voice-coil drivers. Although servomotors possess some inherent nonlinearities at low levels, the overall behavior is linear, especially at large amplitudes when voice-coil drivers are nonlinear. An array of six horn-loaded servomotor loudspeakers has an efficiency exceeding 40% and delivers more than 900 acoustic watts between 31 Hz and 125 Hz.
ER  -