Uma udlala umculo, kunzima ukumboza wonke amabhendi emvamisa ngesipikha esisodwa kuphela ngenxa yomthamo kanye nemikhawulo yesakhiwo sesipikha. Uma lonke ibhendi yemvamisa ithunyelwa ngqo ku-tweeter, imvamisa ephakathi, kanye ne-woofer, "isignali eyeqile" engaphandle kwempendulo yemvamisa yeyunithi izothinta kabi ukubuyiselwa kwesiginali kubhendi yemvamisa evamile, futhi ingalimaza ngisho ne-tweeter kanye nemvamisa ephakathi. Ngakho-ke, abaklami kumele bahlukanise ibhendi yemvamisa yomsindo ibe izingxenye eziningana futhi basebenzise izipikha ezahlukene ukudlala amabhendi emvamisa ahlukene. Lona umsuka nomsebenzi we-crossover.

Icri-ossoverfuthi “ubuchopho” besipikha, obudlala indima ebalulekile ekhwalithini yomsindo. “Ubuchopho” obuhambisanayo ezipikheni ze-amplifier bubalulekile ekhwalithini yomsindo. Ukuphuma komsindo okuvela ku-amplifier yamandla. Kumele kucutshungulwe yizingxenye zesihlungi ku-crossover ukuze kuvunyelwe izimpawu zamaza athile eyunithi ngayinye ukuthi zidlule. Ngakho-ke, kuphela ngokuklama ngokwesayensi nangokunengqondo i-crossover yesipikha lapho izici ezahlukene zamayunithi esipikha zingashintshwa ngempumelelo futhi inhlanganisela yenziwe ngcono ukuze yenze izipikha. Susa amandla aphezulu, wenze impendulo yamaza ebhendi ngayinye yamaza ibe bushelelezi futhi isigaba sesithombe somsindo sibe sinembile.

Kusukela esimisweni sokusebenza, i-crossover iyinethiwekhi yokuhlunga eyakhiwe ngama-capacitor nama-inductor. Isiteshi se-treble sidlulisa kuphela amasignali e-high-frequency futhi sivimbele amasignali e-low-frequency; isiteshi se-bass siphambene nesiteshi se-treble; isiteshi sebanga eliphakathi siyisihlungi se-band-pass esingadlulisa ama-frequency phakathi kwamaphuzu amabili e-crossover, elilodwa eliphansi nelinye eliphezulu.

Izingxenye ze-passive crossover zakhiwe yi-L/C/R, okungukuthi, i-L inductor, i-C capacitor, kanye ne-R resistor. Phakathi kwazo, i-L inductance. Isici ukuvimba imvamisa ephezulu, inqobo nje uma imvamisa ephansi idlula, ngakho-ke ibizwa nangokuthi isihlungi se-low-pass; izici ze-C capacitor ziphambene nje ne-inductance; i-R resistor ayinaso isici semvamisa yokusika, kodwa ihloselwe amaphuzu athile emvamisa futhi Ibhendi yemvamisa isetshenziselwa ukulungisa, i-equalization curve, kanye nokwanda nokwehla kokuzwela.

Ingqikithi ye-ukuphambuka okwenziwayo kuyinkimbinkimbi yamasekethe amaningi okuhlunga adlula kakhulu nadlula kancane. Ama-crossover angasebenzi abonakala elula, anemiklamo ehlukene nezinqubo zokukhiqiza. Kuzokwenza i-crossover ikhiqize imiphumela ehlukene kuzikhulumi.