The Optimum Pivot Position on Tonearm

Takahashi S, Taguchi S, Kaneko N, Fujimoto Y. The Optimum Pivot Position on Tonearm. In: AES Convention 61. Audio Engineering Society; 1978. Paper 1390. Available from: https://aes.org/publications/elibrary-page/?id=2964

@inproceedings{Takahashi1978_2964,
  author = {Takahashi, Susumu and Taguchi, Sadao and Kaneko, Nobuyuki and Fujimoto, Yasuhiro},
  title = {{The Optimum Pivot Position on Tonearm}},
  booktitle = {AES Convention 61},
  note = {Paper 1390},
  year = {1978},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=2964}
}

TY  - CPAPER
TI  - The Optimum Pivot Position on Tonearm
AU  - Takahashi, Susumu
AU  - Taguchi, Sadao
AU  - Kaneko, Nobuyuki
AU  - Fujimoto, Yasuhiro
T2  - AES Convention 61
M1  - Paper 1390
PY  - 1978
DA  - 1978/11/06
UR  - https://aes.org/publications/elibrary-page/?id=2964
PB  - Audio Engineering Society
LA  - en
AB  - In the past, many studies have been made, and reports published, on the low-frequency resonance of tonearms (1), (2), (3). But it seems that no analysis has been made yet of where the best position is on a tonearm for its pivot. This paper introduces the new concepts of a static center of gravity and a dynamic center of gravity on a tonearm, and the optimum pivot position of a tonearm is analyzed in relation to those two points. It has been found that, when a tonearm receives a force from the stylus tip or when any vibration is conveyed to the tip from the pivot positon, the translational motion and rotational motion of the tonearm cancel each other out. This observation has enabled us to compute the optimum pivot position of a tonearm, and to couple our optimum pivot position theory with the theory of dynamically damping a tonearm, as proposed by other scholars and engineers in the past, to achieve more effective damping of the low-frequency resonance of a tonearm.
ER  -