Subwoofer thiab hais lus system zaus teb

Nyuam qhuav pib nyob rau hauv lub seventies thiab eighties ntawm lub xyoo pua xeem, nws twb ntseeg tau tias tus loj dua cov hais lus nyob rau sab, lub zoo dua. Cov niaj hnub mus kom ze rau lub koom haum ntawm lub sonification ntawm accomodations sib txawv dog dig faib rau Dolby koos system nrog cov cais subwoofer dog dig shaken cog qoob loo nyob rau hauv lub pom hais lus suab nrog ntau yam hais lus, tab sis tus kiv cua tau ncaim ib tug heev heev.

Cov nqe lus nug ntawm yog dab tsi yuav tsum yog tus muaj zog ntawm cov lus qhia, tu txog developers thiab technologists los ntawm lub caij thaum cov electromechanical transducers tuaj mus rau hauv lub neej. Muaj yog ib tug tej yam contradiction nyob rau hauv cov kev cai rau lub diffuser. Nyob rau hauv ib tes, kom txo tau zoo playback, lub ntses bass thaj tsam ntau yam nws yuav tsum tau loj txaus thiab loj heev magnetic kauj, nyob rau hauv "qev ntses bass thaj tsam" yoojyim feem ntau ntawm lub hwj chim. Nyob rau lwm cov tes, siab frequencies yuav tsum tau nyiaj pab ntau tshaj lightness oscillatory system thiab yam tsawg kawg nkaus inertia.

Thaum kawg, developers acoustic accessories tau tuaj mus rau cov zajlus kom daws nyob rau hauv sab positioned ua ke ua hauj lwm woofers thiab thiaj li hu "tweeter". Txawm li cas los, nyob rau hauv cov ntaub ntawv no nws yuav muab ib tug "ua hauj lwm" nyob rau hauv nruab nrab ntawm lub spectrum, tab sis qhov teeb meem no yog tshem tawm los ntawm qhov sib ntxiv ntawm ib tug thib peb hais lus ua hauj lwm nyob rau hauv no ntau yam.

Zaus teb li no raws li nyob rau tag nrho audible band. Lub woofer yuav ua tsis tau ntxiv cov ntxaij lim dej, tab sis nyob rau hauv thiaj li yuav txo cov load rau nws thiab cas sim haum durability, yog muab nrog ib tug series-kev cob cog rua inductance, tsis transmissive nruab nrab thiab theem siab tsis. Qhov nruab nrab loudspeaker no kuj pab kom dim muaj "waffle" mus rau lub ntses bass thaj tsam, thiab lub Upper teeb liab Cheebtsam. Yuav kom qhov no kawg, nyob rau hauv txoj kab nrog nws muaj ib tug kauj thiab ib tug capacitor. Raws li rau lub "tweeter", ces tej zaum tau nkag xwb npaj rau nws los ntawm lub band ntawm kwv yees li 3 kHz thiab saum toj no, rau qhov no loudspeaker nyob rau hauv series nrog no capacitance yog muaj.

Niaj hnub nimno ntses bass thaj tsam loudspeaker yog ib tug complex electromechanical ntaus ntawv. Cov chav kawm ntawm lub diffuser yog heev loj. Yuav kom muab nws rau ib ntev lub sij hawm, cov ntaub ntawv yuav tsum tau los mus tiv elastic deformation thiab li khaws nws cov khoom. Feem ntau, lub ntug emitter yog kev cob cog rua nrog cov roj hmab nplhaib diffuzoroderzhatelem semicircular seem.

Stroke ntawm ib tug ob peb millimeters, yuav tsum tau muaj ib tug ntshiab txoj kev, txwv tsis pub tus ntug ntawm lub kauj yuav tau "overwritten" central magnet. Nws muab ib tug centering tshuab ntxhua khaub ncaws yog feem ntau yog ua los ntawm ib tug cob phau ntawv impregnated perforated ntaub nrog ib tug annular corrugation.

Woofer - ib tug high-tech ntaus ntawv nyob rau hauv nws txoj siv yog siv rau tag nrho cov tsis ntev los no kev kho nyob rau hauv polymer ntau lawm. Lub diffuser yuav tsum tawv, ces tus quab yuam ntawm cov kauj yuav kis tau thoob plaws nws saum npoo yuav luag instantly, thiab yooj yim rau accelerating yam ntxwv nyob rau hauv lub kawg tau lub sij hawm lag. Txawm li cas los, nyob rau hauv feem ntau ntawm cov feem ntau kim thiab high-zoo hais lus, oddly txaus, txawm tag nrho cov kev kho tshiab ntawm niaj hnub siv tshuab, daim ntawv no yuav muab siv raws li cov thawj hais lus, uas yog invented nyob rau hauv 1925 los ntawm cov Americans tau Rice thiab Kellogg.

Lub woofer tau ua ib feem ntawm tus tsim ntawm tej high-zoo hais lus system.