Woofer efficiency

Details Woofer efficiency Woofer efficiency

1977-07-05

1979-05-15

Claffy, Kathleen H.

H04R 128

Patent

active

041549791

ABSTRACT:
A louspeaker system having a woofer, tweeter and crossover network has a closed box resonance of 81.5 Hz which frequency is above the half-power point of 65 Hz of the system that includes active equalization of the vented box woofer in the region below 81.5 Hz with an inexpensive two-pole one-transistor circuit.

REFERENCES:
patent: 3130374 (1964-04-01), Beres et al.
Olson, "Acoustical Engineering," Van Nostrand, 1957, pp. 159-161.
Hirsch-Houck, "Electro-Voice Interface A Speaker System," Stereo Review, Mar., 1974.
R. Newman, "A Loudspeaker Design etc.," J. of Audio Eng. Soc., Jul.-Aug., 1973.

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