Yuav ua li cas yog cov passive acoustic system?

Yuav ua li cas lub concerts, clubs, ua yeeb yam ntawm ntxias los yog politicians, loj rallies? Qhov ntawd yog lawv lub hom phiaj. Lawv yuav tsum qhia rau tus mloog suab paj nruag, lo lus, lub tswv yim los yog song. Qhov loj tshaj plaws yog rau nrov nrov rau hnov dab tsi! Tseem ceeb heev luag hauj lwm, uas mus cuag lub Desired nyhuv, nyob rau hauv tej txheej xwm plays suab khoom, piv txwv li passive tham.

Passive acoustic system yog ib tug txheej ntawm hais lus thiab hais lus ntawm ntau hom, uas qhia rau tus mloog ib tug haib suab. Vim qhov no sector yog tsim zoo heev, muaj ib tug ntau yam ntawm kev xaiv rau tus tham. Tag nrho passive hais lus yuav tsum txwv kom muab zais rau hauv broadband thiab multiband. Yuav ua li cas lawv txawv?

Broadband passive acoustic systems muaj ib lub suab emitter, i.e. ib tug hais lus, uas yog tsim los rau cov me nyuam suab nrog ib tug dav ntau zaus. Tej kab yog universal thiab yog haum rau cov neeg uas feem ntau npaaj mini-ob tog los yog picnics nyob rau ntawm nws dacha. Qhov zoo kom zoo dua ntawm cov tshuab yog lawv tsis muaj, nyob rau hauv kev sib piv nrog rau cov multi-band nqi.

Multiband passive acoustic systems tas ua ke nyob rau hauv nws cov qauv ob los yog ntau tshaj suab emitters (hais lus) uas muaj me tub txhua yam ntawm nws ntau yam ntawm lub suab frequencies. Piv txwv li, ib tug system nrog peb loudspeakers ua hauj lwm raws li nram no: lub siab zaus dua tweeter los yog squeaky, medium dua midrange thiab tsawg - ib tug tsawg zaus. Cov tshuaj no tau tso cai rau ho nce qhov zoo tshaj ntawm dua suab thiab ua rau kom tso zis ntau zog.

Lub ntsiab feature uas distinguishes passive acoustic system los ntawm active, yog tus tsis muaj built-nyob rau hauv amplifier. Qhov no yog ob qho tib si ib tug zoo feature ntawm lawv, thiab tsis zoo. Lub disadvantage ntawm xws systems yog vim qhov yuav tsum tau rau ntxiv sab nraud amplifiers, tsis muaj uas lub lag luam ntawm lub passive hais lus tsis yooj yim sua. Cov kev pab ntawm tej kab yog tsis muaj yuav tsum tau mus cuag ib tug ntxiv fais fab mov. Qhov no yog vim li cas rau lawv cov kev siv nyob rau hauv loj qhov chaw los yog qhib qhov chaw. Zoo, thaum koj tsis tau mus ncab ib tug hlau sam xauv nees, thiab tej zaum kuj ua tsis tau li.

Nrog rau cov hais lus peb tau to taub. Tam sim no cia tus tham txog lub acoustic tsim ntawm lub system. Nws yuav tsum qhia tias los yog acoustic ntses bass thaj tsam reflex ciav. Nyob rau hauv lub chaw ua khoom ntawm lub thawv siv yas los yog ntoo. Nws yuav tsum tau muab sau tseg tias txhua uas muaj ib tug ntoo lub thawv, ntau dua zoo dua suab. Yeej muaj tseeb, thiab tus nqi yog me ntsis siab dua li tshuab tshaj "yas".

Ib qho tseem ceeb uas yuav muaj kev cuam tshuam tus nqi ntawm cov khoom, yog qhov rhiab heev. Qhov no yog ib qho uas qhia hais tias characterizes siv zog yuav tsum tau ua nyob rau hauv thiaj li yuav "co li" kem. Qhov ntau dua qhov rhiab heev, tus me ntawm lub hwj chim amplifier lawv xav tau.