Voice coil temperature monitoring: a new in-house developed measurement system

Villa L, Corsini C, Spatafora G, Capucci E, Mele D, Toppi R. Voice coil temperature monitoring: a new in-house developed measurement system. In: AES Convention 148. Audio Engineering Society; 2020. Paper 580. Available from: https://aes.org/publications/elibrary-page/?id=20818

@inproceedings{Villa2020_20818,
  author = {Villa, Luca and Corsini, Chiara and Spatafora, Grazia and Capucci, Emiliano and Mele, Davide and Toppi, Romolo},
  title = {{Voice coil temperature monitoring: a new in-house developed measurement system}},
  booktitle = {AES Convention 148},
  note = {Paper 580},
  year = {2020},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20818}
}

TY  - CPAPER
TI  - Voice coil temperature monitoring: a new in-house developed measurement system
AU  - Villa, Luca
AU  - Corsini, Chiara
AU  - Spatafora, Grazia
AU  - Capucci, Emiliano
AU  - Mele, Davide
AU  - Toppi, Romolo
T2  - AES Convention 148
M1  - Paper 580
PY  - 2020
DA  - 2020/05/06
UR  - https://aes.org/publications/elibrary-page/?id=20818
PB  - Audio Engineering Society
LA  - en
AB  - The increase in temperature of a loudspeaker voice coil (VC) might damage the electrodynamic transducer and produces power compression effect. Usually, DC resistance is evaluated and related to VC thanks to standard thermal coefficients. Unfortunately, typical commercial tools are not customisable according to the user’s needs. We have developed an instrument based on the same principle, allowing for user definition of the thermal coefficients, customised software interface, portable and able to increase our lab capabilities. DC resistance of a compression driver and two woofers is measured during life tests using our system and results are compared with Klippel Power Test module (PWT), considered the gold standard. Results showed differences lower than 3.5%, confirming the validity of the new instrument.
ER  -