Tsheb lub suab hla yog tej zaum qee qhov tsis to taub feem ntau ntawm lub suab tawm muaj. Txij li thaum lawv tsis tsim nyog kiag li, nws yog qhov yooj yim zoo nkauj kom tsuas yog gloss ntawm cov ntsiab lus tag nrho thaum tsim los yog kho dua tshiab lub tsheb suab. Lub taub hau, amplifiers, thiab hais lus tau txais tag nrho cov xovxwm zoo, tab sis qhov ntawd tsis tau txhais hais tias crossovers tsis tseem ceeb thiab.
Yuav kom nkag siab tias crossover yog dab tsi, thiab txawm tias lub tsheb suab tsim tiag tiag xav tau ib lossis ntau dua, nws yog ib qho tseem ceeb ua ntej kom nkag siab qee cov ntsiab lus tseem ceeb uas cuam tshuam rau kev siv tsheb audio crossover.
Lub tswv yim hauv qab yog tias suab paj nruag yog tsim los ntawm lub suab zaus uas khiav tag nrho cov gamut ntawm tib neeg hnov, tab sis qee tus neeg hais lus zoo dua ntawm kev tsim cov zaus ntau dua li lwm tus. Tweeters yog tsim los tsim cov khoom siv ntau zaus, woofers yog tsim los tsim cov zaus qis, thiab lwm yam.
Nrog rau qhov ntawd, cov tsheb suab tshiab feem ntau xav tsis thoob thaum kawm tias txhua lub tsheb suab hauv lub neej tiag tiag yuav tsum muaj kev hla ntawm ib theem lossis lwm qhov. Piv txwv li, cov txheej txheem yooj yim heev uas siv cov neeg hais lus coaxial tiag tiag muaj cov crossovers me me ua rau hauv cov neeg hais lus. Lwm cov tshuab, tshwj xeeb tshaj yog cov uas siv cov neeg hais lus, feem ntau siv cov kev sib tshuam sab nraud uas tsuas yog dhau qhov tsim nyog zaus rau cov neeg hais lus raug.
Lub hom phiaj tseem ceeb ntawm kev rhuav cov suab paj nruag rau hauv cov khoom siv zaus, thiab tsuas yog xa qee zaus mus rau cov neeg hais lus tshwj xeeb, yog ua kom muaj kev ncaj ncees siab dua. Los ntawm kev ua kom paub tseeb tias tsuas yog cov frequencies mus txog cov neeg hais lus zoo, koj tuaj yeem txo qhov cuam tshuam thiab pab txhim kho lub suab tag nrho ntawm lub tsheb suab.
Type of Car Audio Crossovers
Muaj ob hom kev hla hla, txhua qhov zoo tshaj plaws rau cov xwm txheej tshwj xeeb:
Passive Crossovers
Cov crossovers zaum ntawm lub amp thiab cov neeg hais lus, thiab lawv lim tawm cov zaus tsis xav tau. Qee tus neeg hais lus tau tsim-hauv passive crossovers. Txij li thaum cov crossovers no tsuas yog xaim nyob rau hauv-nruab nrab ntawm lub amp thiab hais lus, lawv kuj yooj yim rau nruab. Txawm li cas los xij, muaj qee qhov kev ua tsis tau zoo uas muaj nyob hauv passive crossovers.
Active Crossovers
Cov no tseem hu ua hluav taws xob crossovers, thiab lawv yog ob qho tib si nyuaj thiab kim dua cov chav nyob. Active crossovers xav tau lub hwj chim, tab sis lawv tsis nkim lub zog los ntawm kev lim tawm lub suab nrov ntawm txoj kev passive crossovers ua.
Leej twg xav tau lub tsheb Audio Crossover?
Qhov tseeb yog tias txhua lub tsheb lub suab yuav tsum muaj qee hom kev sib tw ntau yam uas txhua lub tsheb suab yuav tsum muaj qee hom amplifier. Tab sis nyob rau hauv tib txoj kev uas muaj ntau lub taub hau muaj xws li ib tug built-in amplifier, hais lus kuj muaj xws li built-in crossovers. Nyob rau hauv lub tsheb suab tshuab, nws yog tag nrho ua tau los ntawm qhov zoo xwb tsis muaj crossovers ntxiv. Txawm li cas los xij, muaj ntau qhov xwm txheej uas yog ib qho passive lossis active chav yuav txhim kho lub suab zoo, kev ua haujlwm ntawm lub kaw lus, lossis ob qho tib si.
Yog tias koj lub tsheb lub kaw lus siv cov neeg hais lus coaxial, tej zaum koj yuav tsis xav tau kev sib tw ntxiv. Cov neeg hais lus puv ntoob twb tau tsim-hauv passive crossovers uas lim cov zaus uas ncav cuag txhua tus tsav tsheb. Txawm hais tias koj ntxiv ib qho amplifier rau hauv kev sib xyaw, cov lus sib tham hauv built-in yuav tsum muaj ntau tshaj qhov txaus. Txawm li cas los xij, koj yuav xav tau crossover yog tias koj ntxiv lub amplifier thiab subwoofer rau hom kab ke ntawd.
Ntawm qhov tod tes, koj feem ntau yuav xav tau ib lossis ntau qhov kev sib tw yog tias koj npaj yuav tsim lub kaw lus uas muaj cov neeg hais lus, ntau lub suab nrov, thiab subwoofers. Qhov no yog qhov tseeb tshwj xeeb yog tias koj npaj yuav siv cov amplifiers los tsav cov neeg hais lus tshwj xeeb, xws li koj cov woofers lossis tweeters. Txawm hais tias koj xaiv active lossis passive crossovers, koj yuav xav tau ib yam dab tsi los khaws cov zaus uas tsis xav tau kom ncav cuag cov neeg hais lus.
Nws tseem ceeb heev uas yuav tsum nco ntsoov tias tom qab muag amplifiers feem ntau suav nrog cov lim dej ua ke uas ua tau zoo ua crossovers yog tias koj tab tom tsim lub tsheb suab nrov nrog cov neeg hais lus. Cov lim dej siab dhau hauv hom amplifier tso cai rau koj tsav tweeters, thiab cov lim qis qis tso cai rau koj tsav woofers, tsis tas yuav muaj kev sib tw ntxiv.
Thaum muaj kev sib tw ua haujlwm pab tau tiag tiag
Thaum koj tuaj yeem tau txais los ntawm qhov zoo xwb yam tsis muaj kev sib tw hauv qhov xwm txheej uas koj tsuas yog siv lub tshuab hluav taws xob nkaus xwb, kev tsim kho nyuaj tuaj yeem tau txais txiaj ntsig los ntawm kev sib tw ua haujlwm. Piv txwv li, 3-txoj kev crossover yog ib qho khoom siv uas koj tau xaim ntawm koj lub taub hau thiab ntau lub amplifiers.
Nyob rau hauv qhov xwm txheej no, txhua lub tshuab hluav taws xob tau txais ntau qhov ntau zaus los ntawm kev sib tw, thiab txhua lub tshuab hluav taws xob yog siv los tsav ib hom lus tshwj xeeb. Piv txwv li, ib tus tuaj yeem tsav cov hais lus pem hauv ntej nrog kev hla siab, lwm tus tuaj yeem tsav tsheb tom qab cov neeg hais lus puv ntoob, thiab tus thib peb subwoofer amp tuaj yeem tsav lub sub.
Do Crossovers Yuav Tsum Muaj Kev Txhim Kho?
Kev txhim kho crossovers tsis yog foob pob hluav taws kev tshawb fawb, tab sis koj yuav xav tau kev nkag siab yooj yim ntawm koj tab tom ua ua ntej ua qhov hom DIY project. Txhim kho passive crossover yog qhov yooj yim vim nws tsuas yog cuam tshuam nrog kev sib txuas ntawm koj lub amp thiab koj cov neeg hais lus. Piv txwv li, koj tuaj yeem xaim passive crossover rau koj lub suab tso zis, tom qab ntawd xaim qhov crossover lub tweeter tso tawm rau koj lub tweeter thiab lub woofer tso zis rau koj woofer.
Kev txhim kho lub tsheb sib tw ua suab nrov feem ntau yuav yog cov txheej txheem nyuaj dua. Qhov teeb meem tseem ceeb yog qhov kev sib tw ua haujlwm xav tau lub zog, yog li koj yuav tsum tau khiav lub zog thiab hauv av xaim rau txhua chav. Qhov xwm zoo yog tias koj twb tau teeb tsa lub suab nrov, tom qab ntawd koj yuav tsum muaj peev xwm txhim kho qhov kev sib tw ua haujlwm vim tias cov xaim tsis yog qhov nyuaj dua. Qhov tseeb, grounding koj active crossover nyob rau tib qhov chaw koj grounded koj amp yuav pab tiv thaiv kom txhob annoying av voj interference.
