Real-Time Voice-Coil Temperature and Cone Displacement Control of Loudspeakers

Bortoni C, Bortoni R, Noceti Filho S, Seara R. Real-Time Voice-Coil Temperature and Cone Displacement Control of Loudspeakers. In: AES Convention 117. Audio Engineering Society; 2004. Paper 6249. Available from: https://aes.org/publications/elibrary-page/?id=12906

@inproceedings{Bortoni2004_12906,
  author = {Bortoni, Constancio and Bortoni, Rosalfonso and Noceti Filho, Sidnei and Seara, Rui},
  title = {{Real-Time Voice-Coil Temperature and Cone Displacement Control of Loudspeakers}},
  booktitle = {AES Convention 117},
  note = {Paper 6249},
  year = {2004},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12906}
}

TY  - CPAPER
TI  - Real-Time Voice-Coil Temperature and Cone Displacement Control of Loudspeakers
AU  - Bortoni, Constancio
AU  - Bortoni, Rosalfonso
AU  - Noceti Filho, Sidnei
AU  - Seara, Rui
T2  - AES Convention 117
M1  - Paper 6249
PY  - 2004
DA  - 2004/10/06
UR  - https://aes.org/publications/elibrary-page/?id=12906
PB  - Audio Engineering Society
LA  - en
AB  - With loudspeakers operating in a high power environment (common in PA systems), the voice-coil overheating and the excessive cone displacement are the main causes of damages and faults. These drawbacks are related to the low efficiency and cone displacement limitation, respectively. This paper proposes a procedure to measure and control both the voice-coil temperature and cone displacement by using a digital signal processor (DSP). The voice-coil temperature and cone displacement are indirectly obtained from the coil DC resistance variation and the cone acceleration, respectively. This approach takes into account (by measuring) some real characteristics of the loudspeaker, as its inherent nonlinearities. Thus, we can obtain the most from the sound system, since it may now work without the usual safety margin needed for these systems.
ER  -