Patent
1978-03-13
1979-03-20
Stellar, George G.
179180, H04R 128
Patent
active
041455711
ABSTRACT:
A loudspeaker system is described in which a driven speaker is acoustically coupled in the speaker enclosure with a variable acoustical damper, the damper having an acoustical cone, the movement of which is dampened by an induction coil connected across variable resistance means.
REFERENCES:
patent: 3275758 (1966-09-01), Bryan et al.
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