Poyimba nyimbo, zimakhala zovuta kuphimba magulu onse afupipafupi ndi wokamba nkhani mmodzi yekha chifukwa cha mphamvu ndi zofooka za oyankhula. "Zomwe zili kunja kwa ma frequency a unit zitha kusokoneza kuchira kwa ma siginecha mu band yanthawi zonse, ndipo zitha kuwononga ma tweeter ndi ma frequency apakati.Chifukwa chake, opanga amayenera kugawa ma frequency band m'magawo angapo ndikugwiritsa ntchito oyankhula osiyanasiyana kusewera ma frequency osiyanasiyana.Ichi ndiye chiyambi ndi ntchito ya crossover.

Thecrossoverndi "ubongo" wa wokamba nkhani, umene umagwira ntchito yofunika kwambiri pa khalidwe la mawu.Kuphatikizika kwa "ubongo" m'ma speaker amplifier ndikofunikira kwambiri pakumveka bwino.Kutulutsa kwamawu kuchokera ku amplifier mphamvu.Iyenera kukonzedwa ndi zigawo zosefera mu crossover kuti ma sign a ma frequency amtundu uliwonse adutse.Chifukwa chake, kokha mwasayansi komanso mwanzeru kupanga cholumikizira cholankhulira komwe kungasinthidwe bwino mawonekedwe a mayunitsi olankhulira komanso kuphatikiza kukhathamiritsa kuti olankhula akhale.Tsegulani kuthekera kwakukulu, kupangitsa kuyankha pafupipafupi kwa gulu lililonse la pafupipafupi kukhala kosalala komanso gawo la chithunzi chomveka bwino.

Kuchokera pa mfundo yogwirira ntchito, crossover ndi netiweki ya fyuluta yopangidwa ndi ma capacitors ndi inductors.Njira ya treble imangodutsa ma siginecha apamwamba kwambiri ndikuletsa ma siginecha otsika;bass channel ndi zosiyana ndi treble channel;njira yapakatikati ndi fyuluta ya band-pass yomwe imangodutsa ma frequency pakati pa magawo awiri a crossover, imodzi yotsika ndi imodzi yokwera.

Zigawo za crossover passive zimapangidwa ndi L/C/R, ndiye kuti, L inductor, C capacitor, ndi R resistor.Pakati pawo, L inductance.Khalidweli ndikuletsa ma frequency apamwamba, bola ngati ma frequency otsika adutsa, motero amatchedwanso fyuluta yotsika;zizindikiro za C capacitor ndizosiyana kwambiri ndi inductance;R resistor ilibe mawonekedwe odulira pafupipafupi, koma imayang'ana pafupipafupi pafupipafupi ndipo Gulu la pafupipafupi limagwiritsidwa ntchito kuwongolera, kupindika kofanana, komanso kukhudzika kumawonjezeka ndi kuchepa.

Chiyambi cha apassive crossover ndi zovuta zingapo zapamwamba zodutsa komanso zotsika zosefera.Passive crossovers amawoneka ngati osavuta, okhala ndi mapangidwe osiyanasiyana komanso njira zopangira.Zidzapangitsa kuti crossover ikhale ndi zotsatira zosiyana mwa oyankhula.