Plural concentric moving coil speaker with push-pull voltage fol

Details Plural concentric moving coil speaker with push-pull voltage fol Plural concentric moving coil speaker with push-pull voltage fol

1978-07-14

1980-05-06

Stellar, George G.

1791155DV, H04R 300

Patent

active

042018862

ABSTRACT:
A loudspeaker with an overlay voice coil and directly coupled push-pull audio amplifier circuit is disclosed. The overlay configuration compensates for increased input impedance at high frequencies by introducing a transformer coupling between two co-axial voice coils. The resultant input impedance remains fairly constant over a large frequency range, thereby insuring uniform power transfer to the speaker.

REFERENCES:
patent: 2164374 (1939-07-01), Barker
patent: 2925541 (1960-02-01), Koch
patent: 2959640 (1960-11-01), Schultz
patent: 3196211 (1965-07-01), Kessenich
Proc. I. R. E., Jun. 1953, p. 719, FIG. 6, from "Symmetrical Properties of Transducers and Their Applications," Sziklai.

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