A Family of Circuit Topologies for the Linkwitz - Riley ( Lr - 4 ) Crossover Alignment
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چکیده
A family of circuit topologies for the Linkwitz-Riley (LR-4) crossover alignment Thispreprinthasbeenreproduced fromtheauthor'sadvance manuscript, withoutediting,corrections or consideration by theReviewBoard.TheAES takesno responsibility for the contents. All dghtsreserved.Reproduction of thispreprint,or any portionthereof,isnot permittedwithout directpermission from theJournalof theAudioEngineering Society. Abstract A family of LR-4 circuit topologies is presented that is of direct application to the audiophile class of reproduction systems where system transparency and cost-effective design is paramount. Methodologies including quasi-passive and active realisations are described, where the emphasis is to establish both high-and low-pass filter structures using Just four reactive elements and without the need for all-pass compensation. New structures are identified that achieve optimum matrixing without redundant reactive elements and a technique employing a low-feedback, transconductance amplifier is proposed. A design example of a three-way prototype using eight reactive elements is discussed, where loudspeaker compensation includes the use of a mid-range driver with a Butterworth lfalignment. England This paper was prepared as part of a study on crossover topologies for use with dipole, low-frequency loudspeaker systems on behalf of
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