Computing Peak Currents into Loudspeakers

Vanderkooy J, Lipshitz SP. Computing Peak Currents into Loudspeakers. In: AES Convention 81. Audio Engineering Society; 1986. Paper 2411. Available from: https://aes.org/publications/elibrary-page/?id=5019

@inproceedings{Vanderkooy1986_5019,
  author = {Vanderkooy, John and Lipshitz, Stanley P.},
  title = {{Computing Peak Currents into Loudspeakers}},
  booktitle = {AES Convention 81},
  note = {Paper 2411},
  year = {1986},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=5019}
}

TY  - CPAPER
TI  - Computing Peak Currents into Loudspeakers
AU  - Vanderkooy, John
AU  - Lipshitz, Stanley P.
T2  - AES Convention 81
M1  - Paper 2411
PY  - 1986
DA  - 1986/11/06
UR  - https://aes.org/publications/elibrary-page/?id=5019
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents techniques and examples for computing the peak current that a complex loudspeaker load can draw when driven by a signal with well-defined voltage limits. This peak current can be characterized by a nominal resistance Rn. The theory for Rn of Preis and Schroeter, valid for infinite bandwidth, is applied to finite-bandwidth impedance data acquired from an FFT analyzer. Some theoretically calculable loads and their respective Rn values are presented. Simple test data are analyzed which show that the impedance data must be real at the band edge. Complexities involved in the processing are discussed and illustrated for real loudspeaker impedance measurements, and phase tilting or use of the cyclic minimum-phase impedance is necessary to provide consistent results. It is not unusual for the nominal resistance Rn of a loudspeaker to be less than half the minimum impedance value.
ER  -