Device to improve the bass reproduction in loudspeaker systems u

Details Device to improve the bass reproduction in loudspeaker systems u Device to improve the bass reproduction in loudspeaker systems u

1992-09-10

1994-07-05

Kuntz, Curtis

Electrical audio signal processing systems and devices

Loudspeaker feedback

381159, 381 89, H04R 300

Patent

active

053275047

ABSTRACT:
The housings of the devices are divided by inner walls into two or three inner chambers. One of the inner chambers adjoins the membrane of the loudspeaker. Adjoining this inner chamber a membrane is built into an opening of an inner wall. Movements of the inner membrane, which are caused by pressure changes in this chamber, are servo supported by an inner electrodynamic transducer, whose membrane lies parallel behind the other inner membrane. The supporting movements are caused by a controller, which tries to hold constant the distance between the two inner membranes.

REFERENCES:
patent: 4008374 (1977-02-01), Tiefenbrun
patent: 5191619 (1993-03-01), Hayase

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