Loudspeaker system with improved lc crossover network

Details Loudspeaker system with improved lc crossover network Loudspeaker system with improved lc crossover network

H - Electricity

04

R

179/37

H04R 3/12 (2006.01)

Patent

CA 1111775

ABSTRACT OF THE DISCLOSURE A loudspeaker system including a low frequency loudspeaker as well as midrange and high frequency loud- speakers and an LC crossover network, is disclosed. The LC crossover network includes an auto-transformer which not only serves as a component to determine a crossover freqeuncy but which also boosts the electrical signal that is input to the electroacoustic transducer of a less efficient loudspeaker. The autotransformer increases the output of the less efficient loudspeaker and accommodates its use with more efficient loud- speakers so that the overall loudspeaker system operates at optimum efficiency. An illustrative embodiment of the loud- speaker system affords 108 dB SPL output at one meter with one watt input which corresponds to about 20% overall efficiency. The smoothness of amplitude response over the range of audible frequencies that is necessary for high fidelity sound repro- duction is improved by inclusion of peaking circuits in the LC crossover network of the loudspeaker system to enhance amplitude response in the regions of crossover frequencies.

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