Measuring the Loudspeaker's Impedance During Operation for the Evaluation of the Voice Coil Temperature

Behler G, Spätling U, Arimont T. Measuring the Loudspeaker's Impedance During Operation for the Evaluation of the Voice Coil Temperature. In: AES Convention 98. Audio Engineering Society; 1995. Paper 4001. Available from: https://aes.org/publications/elibrary-page/?id=7765

@inproceedings{Behler1995_7765,
  author = {Behler, Gottfried and Spätling, U. and Arimont, T.},
  title = {{Measuring the Loudspeaker's Impedance During Operation for the Evaluation of the Voice Coil Temperature}},
  booktitle = {AES Convention 98},
  note = {Paper 4001},
  year = {1995},
  month = feb,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=7765}
}

TY  - CPAPER
TI  - Measuring the Loudspeaker's Impedance During Operation for the Evaluation of the Voice Coil Temperature
AU  - Behler, Gottfried
AU  - Spätling, U.
AU  - Arimont, T.
T2  - AES Convention 98
M1  - Paper 4001
PY  - 1995
DA  - 1995/02/06
UR  - https://aes.org/publications/elibrary-page/?id=7765
PB  - Audio Engineering Society
LA  - en
AB  - Voice-coil temperature in high-power loudspeaker systems may reach values of more than 250°C. The increase of temperature produces an unwanted effect known as power compression and at higher temperatures loudspeaker damage will : occur. Knowledge of the actual voice-coil temperature, under operating conditions, is required to compensate for this power compression and to prevent any loudspeaker damage. Using only the operating signal, short-time spectra of the voice-coil voltage and current are calculated and used to derive the impedance characteristic. The change of dc resistance is derived from the real part of the impedance, and then the temperature can be calculated.
ER  -