Uma udlala umculo, kunzima ukumboza wonke amabhendi efrikhwensi ngesipika esisodwa kuphela ngenxa yomthamo kanye nemikhawulo yesakhiwo sesipikha.Uma yonke ibhendi yefrikhwensi ithunyelwa ngokuqondile ku-tweeter, i-mid-frequency, ne-woofer, "isiginali eyeqile" engaphandle kokuphendula kwemvamisa yeyunithi izophazamisa ukutholwa kwesiginali kubhendi yefrikhwensi evamile, futhi ingase ilimaze i-tweequency kanye ne-midrequency. Ngakho-ke, abaklami kufanele bahlukanise ibhendi yefrikhwensi yomsindo ibe izingxenye ezimbalwa futhi basebenzise izipikha ezihlukene ukuze badlale amabhendi amafrikhwensi ahlukene. Lona umsuka nomsebenzi we-crossover.

Icrossoverfuthi "ubuchopho" besikhulumi, esidlala indima ebalulekile izinga lekhwalithi yomsindo. I-crossover "ubuchopho" kuzipikha ze-amplifier ibalulekile kukhwalithi yomsindo. Okukhipha umsindo kusuka kusikhulisamandla. Kumele icutshungulwe yizingxenye zokuhlunga ku-crossover ukuvumela amasignali amafrikhwensi athile weyunithi ngayinye ukuthi adlule. Ngakho-ke, kuphela ngokuklama ngokwesayensi nangokunengqondo i-crossover yesipikha lapho izici ezihlukene zamayunithi esipikha zingashintshwa kahle futhi inhlanganisela ithuthukiswe ukwenza izipikha. Khipha amandla aphezulu, okwenza impendulo yemvamisa yebhendi ngayinye ishelele futhi isigaba sesithombe somsindo sinembe.

Kusukela kumgomo wokusebenza, i-crossover iyinethiwekhi yokuhlunga eyakhiwe ngama-capacitor nama-inductors. Isiteshi esine-treble sidlula kuphela amasiginali wefrikhwensi ephezulu futhi sivimbe amasignali amaza aphansi; isiteshi se-bass siphambene nesiteshi se-treble; isiteshi sobubanzi obumaphakathi yisihlungi se-band-pass esingadlula kuphela amaza phakathi kwamaphoyinti amabili e-crossover, elilodwa eliphansi neliphezulu.

Izingxenye ze-passive crossover zenziwe nge-L/C/R, okungukuthi, i-L inductor, i-C capacitor, ne-R resistor. Phakathi kwabo, i-L inductance. Isici ukuvimba ama-frequencies aphezulu, inqobo nje uma ama-frequency aphansi edlula, ngakho-ke kubizwa nangokuthi isihlungi se-low-pass; izici ze-C capacitor ziphambene nje ne-inductance; i-resistor engu-R ayinaso isici sokusika imvamisa, kodwa ihloselwe amaphoyinti emvamisa ethile futhi Ibhendi yefrikhwensi isetshenziselwa ukulungisa, ijika lokulinganisa, nokwanda nokuzwela kokuzwela.

Ingqikithi ye-ai-passive crossover iyinkimbinkimbi yamasekhethi okuhlunga amaphasi aphezulu naphansi. Ama-crossovers angabonakali abonakala elula, anemiklamo ehlukene nezinqubo zokukhiqiza. Izokwenza i-crossover ikhiqize imiphumela ehlukene kuzikhulumi.