Woofer equalizer

Details Woofer equalizer Woofer equalizer

1976-09-16

1977-05-03

Stellar, George G.

H04R 302

Patent

active

040216144

ABSTRACT:
A speaker system is disclosed which comprises a woofer, a transformer secondary and a plurality of inductive and capacitive impedances. Switching means are provided for coupling selected taps of the transformer secondary through selected ones of the impedances so as to selectively add or subtract, according to the switch position, the amount of sound power output.

REFERENCES:
patent: 1550724 (1925-08-01), Hubbard
patent: 1675031 (1928-06-01), Kolster
patent: 1834820 (1931-12-01), Bobb
patent: 1883624 (1932-10-01), Doran
patent: 1907723 (1933-05-01), Bostwick
patent: 1912719 (1933-06-01), Nicolas
patent: 1990099 (1935-02-01), Siy
patent: 2036084 (1936-03-01), Roder
patent: 2179840 (1939-11-01), Bucky
patent: 3487341 (1969-12-01), Grout
patent: 3715501 (1973-02-01), Russell

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