Automatically switched equalization circuit

Details Automatically switched equalization circuit Automatically switched equalization circuit

1995-07-31

1996-12-03

Isen, Forester W.

Electrical audio signal processing systems and devices

Including frequency control

Having automatic equalizer circuit

381123, H03G 500

Patent

active

055816266

ABSTRACT:
A circuit in which, when loudspeakers are being used by themselves, the equalization to the loudspeakers is optimized for full range operation and only the intended filters for full range operation are inserted into the circuit path. When a subwoofer is added to the system to handle low frequencies, the subwoofer mating connector is inserted into a connector jack to receive the audio signals and simultaneously inserts high pass filters into the circuit for the speakers so they operate in the mid range and high frequency range where they are better suited. The subwoofer handles and reproduces the low frequencies. The result is louder and clearer satellite speakers that exhibit a much lower tendency to clip the signals from the amplifier driving them.

REFERENCES:
patent: 4433209 (1984-02-01), Kurosawa et al.
patent: 4763012 (1988-08-01), Blankenship
patent: 4949384 (1990-08-01), Noro et al.
patent: 5050214 (1991-09-01), Lee
patent: 5056148 (1991-10-01), Hayashi
patent: 5161198 (1992-11-01), Noble

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