Phase shift low frequency loudspeaker system

Details Phase shift low frequency loudspeaker system Phase shift low frequency loudspeaker system

H - Electricity

04

R

179/37

H04R 3/12 (2006.01) H04R 1/22 (2006.01)

Patent

CA 1171795

ABSTRACT OF THE DISCLOSURE An audio speaker system is disclosed providing improve fidelity of performance from overdamped woofer drivers in small sealed enclosures. At least two woofer drivers are employed, and are driven electrically in such a manner that the phase difference in the drive signal to the two drivers, or sets of drivers if more than two are employed, will be near zero at the lowest bass frequency and will increase to a value up to 180 degrees at the highest bass frequency which is generally taken as the woofer-midrange crossover frequency. This aforementioned phase difference in the electrical drive signal to two sets of woofers common to one sealed enclosure improves over prior art by providing increased low-bass acoustic output, less wave interference between the woofers and the midrange drivers, and a smoother input impedance characteristic in the bass frequency region.

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