Thaum ua si suab paj nruag, nws yog ib qho nyuaj rau npog tag nrho cov zaus bands nrog tsuas yog ib tug hais lus vim lub peev xwm thiab cov qauv kev txwv ntawm tus neeg hais lus.Yog hais tias tag nrho cov zaus band raug xa ncaj qha mus rau lub tweeter, nruab nrab-frequency, thiab woofer, lub "ntau tshaj teeb liab" uas yog sab nraum lub zaus teb ntawm chav tsev yuav adversely cuam tshuam lub teeb liab rov qab nyob rau hauv lub zaus thiab frequency. Yog li ntawd, cov neeg tsim qauv yuav tsum faib lub suab zaus band rau hauv ntau qhov chaw thiab siv cov neeg hais lus sib txawv los ua si sib txawv zaus. Qhov no yog lub hauv paus chiv keeb thiab kev ua haujlwm ntawm crossover.

Covcrossoverkuj yog "lub hlwb" ntawm tus neeg hais lus, uas ua lub luag haujlwm tseem ceeb hauv kev ua suab nrov zoo. Lub crossover "lub hlwb" nyob rau hauv lub amplifier hais lus yog qhov tseem ceeb rau lub suab zoo. Suab tso zis los ntawm lub hwj chim amplifier. Nws yuav tsum tau ua tiav los ntawm cov khoom lim dej hauv crossover kom tso cai rau cov teeb liab ntawm cov zaus tshwj xeeb ntawm txhua chav nyob. Yog li ntawd, tsuas yog los ntawm kev tshawb fawb thiab kev tsim qauv tsim tus neeg hais lus crossover tuaj yeem ua qhov sib txawv ntawm cov neeg hais lus tau hloov kho tau zoo thiab kev sib xyaw ua ke kom zoo los ua cov neeg hais lus. Unleash lub peev xwm siab tshaj plaws, ua qhov zaus teb ntawm txhua zaus band smooth thiab lub suab duab theem raug.

Los ntawm txoj haujlwm ua haujlwm, crossover yog lub lim dej uas muaj cov capacitors thiab inductors. Lub treble channel tsuas yog kis tau cov teeb liab ntau zaus thiab thaiv cov teeb liab tsawg zaus; cov ntses bass thaj tsam yog qhov opposite ntawm lub treble channel; mid-range channel yog band-pass lim uas tuaj yeem kis tau ntau zaus ntawm ob lub ntsiab lus hla, ib qho qis thiab ib qho siab.

Cov khoom ntawm passive crossover yog tsim los ntawm L / C / R, uas yog, L inductor, C capacitor, thiab R resistor. Ntawm lawv, L inductance. Tus cwj pwm yog los thaiv cov zaus ntau dua, ntev npaum li qhov qis zaus dhau mus, yog li nws tseem hu ua lub lim dej qis; Cov yam ntxwv ntawm C capacitor tsuas yog qhov txawv ntawm qhov inductance; R resistor tsis muaj cov yam ntxwv ntawm kev txiav zaus, tab sis yog tsom rau cov ntsiab lus zaus thiab cov zaus band siv rau kev kho, sib npaug nkhaus, thiab rhiab heev nce thiab txo.

Lub essence ntawm apassive crossover yog ib tug complex ntawm ob peb high-pass thiab low-pass lim circuits. Passive crossovers zoo li yooj yim, nrog cov qauv sib txawv thiab cov txheej txheem ntau lawm. Nws yuav ua rau crossover tsim cov teebmeem sib txawv hauv cov neeg hais lus.