Subwoofer Loudspeaker System with Dynamic Push-Pull Drive

Sukalo D. Subwoofer Loudspeaker System with Dynamic Push-Pull Drive. In: AES Convention 126. Audio Engineering Society; 2009.pp. 7686:1-. Available from: https://aes.org/publications/elibrary-page/?id=14882

@inproceedings{Sukalo2009_14882,
  author = {Sukalo, Drazenko},
  title = {{Subwoofer Loudspeaker System with Dynamic Push-Pull Drive}},
  booktitle = {AES Convention 126},
  pages = {7686:1-},
  year = {2009},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14882}
}

TY  - CPAPER
TI  - Subwoofer Loudspeaker System with Dynamic Push-Pull Drive
AU  - Sukalo, Drazenko
T2  - AES Convention 126
SP  - 1
M1  - Paper 7686
PY  - 2009
DA  - 2009/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14882
PB  - Audio Engineering Society
LA  - en
AB  - This engineering report examines the influence of mutual coupling between two driver-diaphragms driven by two electrical signals, each with a 90° phase shift on the voice-coil impedance curve. A new model of the system is described, and the effects are observed using the electrical circuit simulator PSpice. Finally, predicted and measured values are presented. The dynamic push-pull drive concept was introduced in 2005 [1]. Two bass drive units, w1 and w2, are built into a common enclosure and remain acoustically coupled via the internal space. The drive units are arranged in a push-pull configuration and driven by two similar amplifiers opposite in phase (with respect to the chamber, in order to maintain the chamber in a substantially constant-pressure state). The original sound signal Vi is fed to the input to one of the amplifiers, while the differentiated value d/dt[Vi(t)] is fed to the other amplifier using a differential circuit at the input (Fig. 1).
ER  -