Passive subwoofer nyob rau hauv niaj hnub hais lus

Yuav ua li cas yog ib tug subwoofer? Yeej tseem zoo, ib tug passive system - yog lub kem uas yog kev cob cog rua lub computer los yog suab system. Nws yog tau rau cov me nyuam tsawg zaus suab (los ntawm tsib mus rau ob puas Hz). Muaj passive thiab active subwoofers. Qhov no muaj feem xyuam rau lawv muaj peev xwm mus rau kis suab.

Rau zoo lub suab lub cev, tsuas yog ib qho loj kem, uas kom yooj yim yuav muab tso nyob rau hauv lub rooj. Xaiv lub feem ntau haum qhov chaw rau cov subwoofer, koj yuav ua tau ib qho los tua cov sawv ntawm tsawg zaus tsis, uas yuav tshwm sim nyob rau hauv ib tug uas xa tuaj nrog chav tsev me me. Feem ntau cov feem ntau siv nyob rau hauv passive subwoofer hais lus tsev tsev ua yeeb rau menyuam tsos nrog tshwj xeeb teebmeem thiab suab paj nruag. Nws beautifully conveys tsawg frequencies.

Nws tshwm sim hais tias lub subwoofer systems tsis tuaj koom rau cov khoom siv kev cob cog rua rau lawv vim hais tias ntawm lub mismatch ntawm lawv theem thiab amplitude zaus yam ntxwv. Yuav kom kov yeej tej kev tsis xws luag ntawm lub suab, ib co subwoofers muaj lub sij hawm rau kev hloov mus rau lub theem thiab lub Upper zaus.

hom subwoofers

Nws muaj ob hom ntawm subwoofers: active thiab passive. Muaj lus nug txog qhov txawv ntawm ib tug active subwoofer los ntawm passive raws li lawv ua tau lub zog ntawm cov lus?

Ib tug active subwoofer tau ua rau nws ib lub hwj chim amplifier. Nyab nws yog muaj peev xwm tau muab tshem tawm los ntawm lub tsawg zaus amplifier load. Tsis tas li ntawd, lub active subwoofer muaj ib tug active crossover lim uas siab frequencies, nws yuav pab tau tswj kev ua hauj lwm nrog ib tug acoustic subwoofer broadband system. Heev feem ntau nws muaj ntxiv chaw xaiv nyob rau hauv raws li cov tej yam kev mob ntawm kev siv. Nws muaj ib tug laus tswj thiab ntim.

Tsis zoo li active passive system twb tsis muaj amplifier. Nws yog kev kawm mus rau lub ntaus ntawv uas yog kev cob cog rua: mus rau lub computer hais lus. Yog li ntawd, nws yog tag nrho raws li ib tug yooj yim lub tso suab hais lus ntxiv. Nws yuav tsum tau txuas thiab mus rau ib tug nyias muaj nyias ib lub hwj huam amplifier. Lub ntsiab disadvantage ntawm passive subwoofer yog hais tias nws tsim ib tug ntxiv tab kaum rau lub tso suab, uas yog vim li cas lub ntim yog txo thiab lub zog ntawm cov suab. Txawm li cas los, lub siab dua qhov rhiab heev ntawm lub subwoofer, tsawg lub load rau ntawm cov amplifier.

Tsim nta, uas yog ib tug passive system, yuam kom nws yuav tsum xav rau qhov kev tso kawm nyob rau hauv lub chav tsev. Nws yuav tsum tau tsiv tsev, kom txog thaum koj nrhiav tau ib tug zoo ntses bass thaj tsam suab. Ntau zaus, uas nta ib tug subwoofer, yuav tsum tau muab faib mus rau hauv peb lub hom: sib sib zog nqus (los ntawm nees nkaum rau plaub caug Hz), medium (los ntawm plaub caug rau eighty Hz) thiab siab (los ntawm yim caum mus rau ib puas rau caum Hz) ntses bass thaj tsam. Lub suab subwoofer tias transmits nyob rau hauv lub cheeb tsam ntawm lub diffuser. Los ntawm lub hwj chim thiab lub organic ntses bass thaj tsam nws nyob.

tsim subwoofers

Nyob rau ntaus ntawv passive subwoofers yog distinguished: horn, ib tug vented thiab bandpass. Lawv muaj lawv cov zoo thiab disadvantages. Woofer horn subwoofer yog nyob rau ntawm cov phab ntsa ntawm lub kaw lub thawv. Xa tuaj nrog subwoofers hom yuav muaj loj, loj me me, txawm lub fact tias lawv muaj lub peev xwm ua kom muaj me tub nplua nuj, sib sib zog nqus ntses bass thaj tsam.

Vented muaj ib tug hais lus uas yog nyob rau hauv lub vaj tse. Feem ntau cov feem ntau rau ntawm ib sab muaj ib lub qhov. Subwoofers xws qauv kis ntses bass thaj tsam tones qis tshaj cov muaj zog ntawm raug kaw, vim hais tias cov chav kawm ntawm lub diffuser qab. Lawv yog cov tsim dua rau loj chav, raws li yus muaj los ntawm siab volume.

Tom ntej no saib, uas tej zaum yuav muaj ib tug passive system - bandpass. Nws yog ib tug bandpass lim, muab cov khoom ntawm ob hom piav saum toj no. Qhov no yog manifested nyob rau hauv lub fact tias cov subwoofer muaj ob qhov chaw: ib tug kaw lub thawv thiab reflex. Yog li ntawd, muaj yog ib lub suab siab, tab sis lub zaus band yuav me me.

Rau siv nyob rau hauv lub tsev muaj ntau haum subwoofers gated los yog vented. Xaiv lawv, koj yuav tsum xyuam xim rau cov nram qab no. Subwoofer amplifier yuav tsum ntau tshaj ib nrab sij hawm lub hwj chim, uas muaj ib tug hais lus system. Qhov no yuav tsum tau yuav xyuas kom meej suab zoo.