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Essential Equipment for the Transmission of High Peak Levels in the Disk-Cutting System SAL 74/SX 74

Today's cutting systems for the production of disk recordings feature high power capability (600 watts per channel). A circuit breaker protection system is described which shields the cutter head effectively from thermal overload as well as from excessive mechanical excursions below the resonance frequency. Furthermore the operation of an acceleration limiter is described which splits the transmission band into two separate using the subtraction method. these two bands can then be influenced independently, being reassembled thereafter in proper phase relationship.

JAES Volume 23 Issue 9 pp. 708-712; November 1975
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AES - Audio Engineering Society