Xa udlala umculo, kunzima ukugubungela zonke iibhendi zefrikhwensi ngesithethi esinye kuphela ngenxa yomthamo kunye nokulinganiselwa kwesakhiwo sesithethi.Ukuba yonke ibhendi yefrikhwensi ithunyelwa ngokuthe ngqo kwitweeter, mid-frequency, kunye newoofer, “uphawu olugqithileyo. ” engaphandle kokuphendula rhoqo kweyunithi iya kuchaphazela kakubi ukubuyiswa komqondiso kwibhendi yefrikhwensi eqhelekileyo, kwaye inokonakalisa i-tweeter kunye ne-mid-frequency.Ke ngoko, abaqulunqi kufuneka bahlule ibhendi yefrikhwensi yomsindo kwiindawo ezininzi kwaye basebenzise izithethi ezahlukeneyo ukuze badlale iibhendi zamaza ezahlukeneyo.Le yimvelaphi kunye nomsebenzi we-crossover.

IcrossoverKwakhona “bubuchopho” besithethi, obunendima ebalulekileyo kumgangatho womgangatho wesandi.I-crossover "ubuchopho" kwizithethi ze-amplifier zibalulekile kumgangatho wesandi.Imveliso yomsindo kwi-amplifier yamandla.Kufuneka icutshungulwe ngamacandelo okucoca kwi-crossover ukuvumela imiqondiso yeefrikhwensi ezithile zeyunithi nganye ukuba idlule.Ngoko ke, kuphela ngokuyila ngokwesayensi nangengqiqo i-speaker crossover apho iimpawu ezahlukeneyo zeeyunithi zesithethi zinokuguqulwa ngokufanelekileyo kunye nokudibanisa okulungiselelwe ukwenza izithethi.Ukukhulula amandla aphezulu, ukwenza impendulo yefrikhwensi yebhendi nganye yamaza egudileyo kunye nesigaba somfanekiso wesandi esichanekileyo.

Ukususela kumgaqo wokusebenza, i-crossover yinethiwekhi yokucoca eyenziwe ngama-capacitors kunye ne-inductors.Ijelo le-treble lidlula kuphela izibonakaliso eziphezulu ze-frequency kunye neebhloko zeempawu eziphantsi-frequency;umjelo we-bass uchasene nomjelo ojikelezayo;umjelo ophakathi kuluhlu lokucoca i-band-pass enokuthi idlulise kuphela i-frequencies phakathi kwamanqaku amabini e-crossover, enye ephantsi kunye enye ephezulu.

Amacandelo e-passive crossover ahlanganiswe ne-L / C / R, oko kukuthi, i-inductor ye-L, i-C capacitor, kunye ne-R resistor.Phakathi kwabo, L inductance.Uphawu kukuthintela iifrikhwensi eziphezulu, okoko nje ii-frequencies ezisezantsi zidlula, ngoko ikwabizwa ngokuba yi-low-pass filter;iimpawu ze-C capacitor zichasene nje ne-inductance;i-R resistor ayinayo impawu yokusika i-frequency, kodwa ijolise kumanqaku athile kunye ne-Frequency band isetyenziselwa ukulungiswa, i-curve ye-equalization, kunye nokwanda kovakalelo kunye nokunciphisa.

Undoqo we-ai-passive crossover luhlobo oluntsonkothileyo lweesekethe zokucoca okuphezulu kunye nokupasa okusezantsi.I-passive crossovers ibonakala ilula, kunye noyilo olwahlukileyo kunye neenkqubo zokuvelisa.Iya kwenza i-crossover ivelise iziphumo ezahlukeneyo kwizithethi.