Fig. 1. Curves showing the stulys velocity for a constant signal input to the recorder amplifier system

Published at 1200 × 793 in Things I learned on Phono EQ curves, Pt. 4
Fig. 1. Curves showing the stulys velocity for a constant signal input to the recorder amplifier system

source <cite>Recent Development in Hill and Dale Recorders<cite> <a href=httpsarchiveorgdetailsjournalofsociety30socirichpage102mode2up>Journal of the Society of Motion Picture Engineers January 1938<a> p103<br>フィードバック回路が備わったカッターヘッドでフラットな周波数特性での記録が可能に

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