A New Method of Reducing Direct-Drive Motor Vibration in Turntables

Fujimoto Y, Suzuki M, Fujio K, Sasamoto K, Satoh Y. A New Method of Reducing Direct-Drive Motor Vibration in Turntables. J Audio Eng Soc. 1983;31(4):246-252. Available from: https://aes.org/publications/elibrary-page/?id=4584

@article{Fujimoto1983_4584,
  author = {Fujimoto, Yasuhiro and Suzuki, Masao and Fujio, Kazuyuki and Sasamoto, Katsumi and Satoh, Yuji},
  title = {{A New Method of Reducing Direct-Drive Motor Vibration in Turntables}},
  journal = {Journal of the Audio Engineering Society},
  volume = {31},
  number = {4},
  pages = {246--252},
  year = {1983},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=4584}
}

TY  - JOUR
TI  - A New Method of Reducing Direct-Drive Motor Vibration in Turntables
AU  - Fujimoto, Yasuhiro
AU  - Suzuki, Masao
AU  - Fujio, Kazuyuki
AU  - Sasamoto, Katsumi
AU  - Satoh, Yuji
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 31
IS  - 4
SP  - 246
EP  - 252
PY  - 1983
DA  - 1983/04/06
UR  - https://aes.org/publications/elibrary-page/?id=4584
PB  - Audio Engineering Society
LA  - en
AB  - As a direct-drive motor rotates, there are action-reaction forces set up between the platter and the base (cabinet), and between the motor rotor and the stator. These lead to tone-arm vibrations which cause poor sound reproduction. It is described how these forces can be minimized by adding a second motor or torque generator. The main drive motor and the second motor or torque generator are driven in reverse phase, which greatly reduces base (cabinet) vibration in the rotational plane. This technique provides a substantial improvement in tonal quality.
ER  -