New Induction Drive Transducer Designs

Buck M, Turnmire P, Graebener D. New Induction Drive Transducer Designs. In: AES Convention 127. Audio Engineering Society; 2009. Paper 7847. Available from: https://aes.org/publications/elibrary-page/?id=15042

@inproceedings{Buck2009_15042,
  author = {Buck, Marshall and Turnmire, Patrick and Graebener, David},
  title = {{New Induction Drive Transducer Designs}},
  booktitle = {AES Convention 127},
  note = {Paper 7847},
  year = {2009},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15042}
}

TY  - CPAPER
TI  - New Induction Drive Transducer Designs
AU  - Buck, Marshall
AU  - Turnmire, Patrick
AU  - Graebener, David
T2  - AES Convention 127
M1  - Paper 7847
PY  - 2009
DA  - 2009/10/06
UR  - https://aes.org/publications/elibrary-page/?id=15042
PB  - Audio Engineering Society
LA  - en
AB  - Induction motor designs for a loudspeaker typically use a transformer assembly with a fixed primary and moving secondary (driving ring) immersed in a static magnetic field. Induction drive audio transducers can be designed to produce very high efficiency, high output mid/high devices. In another configuration a very linear, long stroke woofer with high output is realizable. Measurements will be provided on prototypes of both types of devices. The midrange exhibits an output of 83 acoustic watts with 300 Watts drive, and a maximum 10 Watt efficiency of 45%. The devices have a very linear stroke with both Bl vs. X and Le vs. X extremely flat. Reliability is enhanced over conventional voice coil drive means due to the elimination of moving lead in wires. A wide range of nominal impedance can be designed in by changing the wire size and number of turns in the primary.
ER  -