Audio filter with magnetic field cancellation

Details Audio filter with magnetic field cancellation Audio filter with magnetic field cancellation

1995-01-25

1998-05-19

Kuntz, Curtis

Electrical audio signal processing systems and devices

Including frequency control

Having crossover filter

381 98, 381 94, H03G 500

Patent

active

057546673

ABSTRACT:
An audio filter for use with loud speakers which substantially eliminates magnetic fields emanating from inductors of the filter by the inductors for each channel being physically oriented and electrically connected so that the magnetic fields generated by the inductors for each channel are self-cancelling. For preferred embodiments, the pair of inductors for each channel are side-by-side in close proximity to each other with current flowing in opposite directions through the coils.

REFERENCES:
patent: 3491216 (1970-01-01), Picchiottino
patent: 4658229 (1987-04-01), Chen et al.
patent: 4771466 (1988-09-01), Modafferi
patent: 5519781 (1996-05-01), Kukurudza
patent: 5568560 (1996-10-01), Combest

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