A closed-box loudspeaker system with motional feedback is considered as a second-order low-pass filter. The study of the stability leads to the use of a second-order high-pass filter in the feed forward path. A realized system is described, using an electrodynamic velocity pickup transducer with high linearity. Circuit diagrams of the amplifier and results from measurements are given.

Author: Penkov, G.
Affiliation: Film & Radio Research Inst, Sofia, Bulgaria
AES Convention: 56 (March 1977) Paper Number: 1202
Publication Date: March 1, 1977

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