Small-Signal Loudspeaker Impedance Emulator

Iversen NE, Knott A. Small-Signal Loudspeaker Impedance Emulator. In: AES Convention 136. Audio Engineering Society; 2014. Paper 9053. Available from: https://aes.org/publications/elibrary-page/?id=17200

@inproceedings{Iversen2014_17200,
  author = {Iversen, Niels Elkjær and Knott, Arnold},
  title = {{Small-Signal Loudspeaker Impedance Emulator}},
  booktitle = {AES Convention 136},
  note = {Paper 9053},
  year = {2014},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17200}
}

TY  - CPAPER
TI  - Small-Signal Loudspeaker Impedance Emulator
AU  - Iversen, Niels Elkjær
AU  - Knott, Arnold
T2  - AES Convention 136
M1  - Paper 9053
PY  - 2014
DA  - 2014/04/06
UR  - https://aes.org/publications/elibrary-page/?id=17200
PB  - Audio Engineering Society
LA  - en
AB  - Specifying the performance of audio amplifiers is typically done by playing sine waves into a pure ohmic load. However real loudspeaker impedances are not purely ohmic but characterized by the mechanical resonance between the mass of the diaphragm and the compliance of its’ suspension which vary from driver to driver. Therefore a loudspeaker emulator capable of adjusting its’ impedance to a given driver is in need for measurement purposes. This paper proposes a loudspeaker emulator circuit for small signals. Simulations and experimental results are compared and show that it is possible to emulate the loudspeaker impedance with an electric circuit and that its’ resonance frequency can be changed by tuning two resistors.
ER  -