Kodi Kusiyana Pakati pa Wokamba Nkhani wa PA ndi Wokamba Nkhani wa Horn N'chiyani?

Wokamba Nkhani wa PA vs Wokamba Nkhani wa Horn: Kusiyana Kwakukulu

Mu makampani opanga mawu ndi kudziwitsa anthu zambiri, mawu okhudza ma acoustic transducer nthawi zambiri amakhala osokoneza. Mawu akuti “PA speaker” (Wokamba Nkhani Pagulu) nthawi zambiri amagwiritsidwa ntchito ngati dzina lofanana ndi mawu aliwonse olumikizidwa ku makina olankhulira ogawidwa. Ngakhale makampani ambiri amawu nthawi zambiri amagwiritsa ntchito "PA speaker" pofotokoza malo aliwonse owonjezera mawu—kuphatikizapo zida zoimbira zodzaza ndi horn-mu mawu ogawidwa amalonda, nthawi zambiri amatanthauza cholankhulira chowunikira mwachindunji. Kumvetsetsa kusiyana pakati pa cholankhulira cha PA chowunikira mwachindunji ndi cholankhulira cha horn ndikofunikira kwambiri kwa ophatikiza ma AV, akatswiri a mawu, ndi oyang'anira malo omwe ali ndi ntchito yopanga machitidwe omwe amakwaniritsa kumveka kwina (nthawi zambiri amayang'ana Speech Transmission Index ya >0.50), kufalikira, ndi zofunikira zachilengedwe.

Kusiyana kwakukulu pakati pa matekinoloje awiriwa kuli mu njira yawo yolumikizira ma electro-acoustic ndi kulumikizana kwa ma acoustic ku mpweya wozungulira. Wokamba mawu wamba wa PA nthawi zambiri amagwiritsa ntchito choyendetsa chozungulira chozungulira chomwe chili mkati mwa mpanda wotsekedwa kapena wotsekedwa. Kapangidwe kameneka kamatulutsa mawu mwachindunji m'chilengedwe, ndikuyika patsogolo mayankho ambiri (nthawi zambiri 60 Hz mpaka 20,000 Hz) ndi kulinganiza kwachilengedwe kwa tonal. Mosiyana ndi zimenezi, wokamba mawu wa horn amagwiritsa ntchito chowongolera chapadera cholumikizidwa ndi chowongolera cha mafunde cha acoustic (horn). Kapangidwe kameneka kamagwira ntchito ngati chosinthira mawu, chofananiza kukanikiza kwamphamvu kwa diaphragm ya woyendetsa ndi kukanikiza kochepa kwa mawu kwa mpweya wozungulira. Izi zimapangitsa kuti mphamvu ya electro-acoustic ikhale yogwira ntchito kwambiri, ngakhale kuti nthawi zambiri imawononga kubwerezabwereza kochepa (nthawi zambiri kumatsika kwambiri pansi pa 300 Hz).

Kwa opanga makina, kusankha pakati pa cholankhulira cha PA ndi cholankhulira cha horn ndi kuwerengera kutengera zoletsa zakuthupi za malo ogwiritsira ntchito. Chisankhocho chimadalira Mlingo Wofunikira wa Phokoso la Phokoso (SPL), phokoso lozungulira, mtunda wofunikira woponyera, ndi zomwe zili zofunika kuwulutsidwa—kaya ndi nyimbo zonse zakumbuyo, mawu ofunikira, kapena mawu otuluka mwadzidzidzi.

Cholinga chachikulu ndi kuphimba mawu

Cholinga chachikulu cha wokamba nkhani wachikhalidwe wa PA ndikupereka mawu omveka bwino kwambiri pa ma frequency ambiri. Izi zimapangitsa kuti ikhale yokhoza kubwerezanso mitundu yosiyanasiyana ya nyimbo zojambulidwa komanso mawu achilengedwe a munthu. Popeza okamba nkhani wamba a PA amadalira ma cone owunikira mwachindunji, mawu awo amakhala otakata komanso ozungulira, nthawi zambiri amafalitsa mawu pa ngodya pakati pa 90° ndi 120°. Kufalikira kwakukulu kumeneku kumathandiza kwambiri kuphimba malo ndi mawu ofanana, bola kutalika kwa denga (kwabwino mamita 8 mpaka 14) ndi kuwunikira kwa mawu kumayendetsedwa bwino.

Mosiyana ndi zimenezi, ma speaker a horn amapangidwa kuti azitha kumveka bwino komanso kulowa bwino. Ntchito yawo yayikulu ndikupereka mawu omveka bwino, opapatiza pamtunda wautali kapena m'malo okhala ndi phokoso lalikulu. Kuphulika kwa horn kumayang'anira njira yofalitsira mawu, yomwe nthawi zambiri imakhala yopapatiza komanso yolamulidwa bwino—nthawi zambiri imakhala yocheperako kufika pa 60° ndi 40° kapena yocheperako, zomwe zimapangitsa kuti Directivity (Q) factor ikhale 10 mpaka 15. Kuwongolera kumeneku kumaika mphamvu ya acoustic mu beam inayake, kuchepetsa kutuluka kwa acoustic m'malo osafunikira ndikuchepetsa kukwiya kwa minda yolumikizana m'malo owunikira kwambiri.

Ma adilesi a anthu onse ndi mapulogalamu ochezera pa intaneti

Pogwira ntchito, okamba nkhani wamba a PA nthawi zambiri amakhala chisankho chokhazikika m'malo omwe khalidwe la mawu, kuphatikiza kukongola, komanso kufalikira kofanana kwa mawu otsika mpaka apakati (nthawi zambiri 70 mpaka 85 dB) ndiye zolinga zazikulu. Okamba nkhani amagwiritsa ntchito okamba nkhani a PA okhala pamwamba, opendekera, ndi otsekedwa padenga kwambiri m'masitolo ogulitsa, m'mabwalo amakampani, m'malo olandirira alendo, ndi m'malo ophunzirira. M'malo awa, makinawa ayenera kusintha mosavuta pakati pa kupereka nyimbo zakumbuyo zosawoneka bwino (BGM) ndi mawu omveka bwino komanso achilengedwe.

Ma speaker a horn nthawi zambiri amasankhidwa kuti azigwiritsidwa ntchito m'mafakitale, panja, komanso pachitetezo cha moyo pomwe kutulutsa mawu ndi kupulumuka kumaposa kukhulupirika kwa nyimbo. Ndiwofala m'mabwalo a sitima, pansi pa mafakitale, m'mabwalo amasewera, ndi m'mabungwe ochenjeza zadzidzidzi. Mu fakitale yopanga yomwe ili ndi phokoso la 85 mpaka 90 dB(A), speaker wamba wa PA nthawi zambiri amamizidwa kapena kulephera poyesa kuthana ndi phokosolo. Komabe, speaker ya horn imatha kupanga mosavuta kutulutsa kwa 105 mpaka 115 dB(A) kofunikira kuti ikwaniritse chiŵerengero chofunikira cha +10 dB mpaka +15 dB signal-to-noise kuti chikhale chomveka bwino.kutsegula tsamba ladzidzidziNdikofunikira kudziwa kuti kusiyana kumeneku kwamkati/kunja sikokwanira; ma speaker a PA omwe amawala mwachindunji nthawi zambiri amagwiritsidwa ntchito panja kuti azitha kumva mawu omveka bwino, pomwe ma speaker a horn nthawi zambiri amayikidwa m'nyumba m'malo aphokoso, okhala ndi mapanga monga ma ice rink kapena nyumba zosungiramo zinthu.

Kodi Wokamba Nkhani wa PA ndi Chiyani?

Wokamba nkhani wa PA, pankhani ya mawu ofalitsidwa m'malonda, amatanthauza cholankhulira chowala mwachindunji chomwe chimapangidwa kuti chipange ma frequency osiyanasiyana amawu kuti chifalitsidwe bwino. Ma speaker a PA amalonda omwe amaikidwa nthawi zambiri amapangidwa kuti azigwira ntchito mosalekeza mkati mwa ma netiweki ogawa magetsi a 70V kapena 100V. Izi zimathandiza kuti ma speaker ambiri kapena mazana ambiri amangiriridwe pa malo akuluakulu pogwiritsa ntchito waya wocheperako (nthawi zambiri 16 mpaka 18 AWG), kuthana ndi kutayika kwakukulu kwa chizindikiro komwe kungachitike ndi mawaya otsika (8-ohm) pa chingwe chopitilira mamita 100 mpaka 200.

Kapangidwe kake ka sipika ya PA yamalonda nthawi zambiri kamakhala ndi chivundikiro cholimba chopangidwa ndi pulasitiki ya ABS yopangidwa ndi injection-molded, medium-density fiberboard (MDF), kapena chitsulo. Mkati mwa chivundikirocho, transducer imodzi kapena zingapo zosuntha zimayikidwa ku baffle yakutsogolo. Chivundikirocho chimaletsa mafunde amawu omwe sali mbali ya gawo omwe amapangidwa ndi kumbuyo kwa sipika kuti asazungulire ndikuletsa mafunde amawu omwe amapangidwa ndi kutsogolo, zomwe ndizofunikira kwambiri pakubweretsa ma frequency otsika komanso otsika apakati.

Kuti agwirizane ndi ma network ogawidwa a mawu, ma speaker a PA amalonda ali ndi ma transformer ogwirizana ndi mzere wotsatira. Ma transformer awa ali ndi ma pompo angapo oyambira (monga 1.5W, 3W, 6W, 15W, 30W), zomwe zimathandiza kuti cholumikizira cha dongosolo chisinthe mphamvu ya wokamba aliyense payekha. Mphamvu imeneyi ndi yofunika kwambiri pakulinganiza milingo ya SPL m'malo osiyanasiyana a nyumba.

Momwe okamba nkhani a PA amapangira mawu ndi nyimbo

Kuti apeze yankho lalikulu komanso lathyathyathya la ma frequency, ma speaker a PA amalonda nthawi zambiri amagwiritsa ntchito kapangidwe ka mawu ka mbali ziwiri. Kapangidwe kameneka kamagawa chizindikiro cha mawu m'magulu awiri osiyana a ma frequency pogwiritsa ntchito netiweki yamkati yopanda phokoso (nthawi zambiri imadutsa pakati pa 2.5 kHz ndi 3.5 kHz). Ma frequency otsika komanso apakati amatumizidwa ku kondomu yayikulu ya woofer (nthawi zambiri mainchesi 4 mpaka 8 m'mimba mwake), pomwe ma frequency apamwamba amalunjika ku tweeter yaying'ono (nthawi zambiri mainchesi 0.75 mpaka 1).

Mwa kugawa ntchito pakati pa ma transducers okonzedwa kuti agwirizane ndi ma frequency awo, okamba mawu a PA awiriwa amatha kubwereza mawu akuya a bass ofunikira pa nyimbo yakutsogolo komanso mawu ofunikira a konsonanti kuti mawu amveke bwino. Netiweki yolumikizirana imatsimikizira kusinthana bwino pakati pa oyendetsa, kusunga mawu achilengedwe omwe amaletsa kutopa kwa omvera panthawi yosewera kwa nthawi yayitali.

Kugwiritsa ntchito bwino kwambiri m'nyumba ndi m'mabizinesi

Popeza amapambana kwambiri pakutulutsa ma frequency onse okhala ndi kufalikira kwakukulu, ma PA speaker ndi chisankho chabwino kwambiri m'malo amalonda komwe phokoso lamkati limakhala lotsika (nthawi zambiri pansi pa 65 mpaka 70 dB(A)). Malo ogulitsira amadalira kwambiri ma speaker awa kuti apange malo abwino kwambiri kudzera mu nyimbo zapamwamba zakumbuyo, pomwe nthawi yomweyo amawagwiritsa ntchito polemba ma page a antchito. Malo amakampani amagwiritsa ntchito ma PA speaker okhala ndi denga m'malo olandirira alendo ndi m'makonde kuti apereke chidziwitso chomveka bwino.

Kuphatikiza apo, ma PA speaker apangidwa poganizira za kapangidwe ka nyumba. Opanga amapereka mayunitsi awa m'njira zotsika kwambiri zozungulira denga, mipiringidzo yozungulira ya denga lotseguka, ndi makabati okongola okhala pamwamba. Ngakhale kuti nthawi zambiri amawonedwa ngati mayankho amkati, ma PA speaker ambiri amakono amakhala ndi zinthu zosinthika, zomwe zimapangitsa kuti zikhale zoyenera malo odyera akunja komanso malo ochitira masewera olimbitsa thupi komwe kukhulupirika kwa mawu kumakhalabe kofunika kwambiri.

Kodi Cholankhulira cha Horn N'chiyani?

Cholankhulira cha horn ndi cholankhulira chapadera cha electro-acoustic chomwe chimapangidwa kuti chiwonjezere kutulutsa kwa mawu, kuwunikira, komanso kugwira ntchito bwino. M'malo modalira kondomu yayikulu, yowala mwachindunji, cholankhulira cha horn chimagwiritsa ntchito diaphragm yaying'ono, yolimba yomwe ili mkati mwa cholankhulira cha compression. Cholankhulirachi chimalumikizidwa ndi pakhosi lopapatiza la acoustic waveguide (nthawi zambiri chimakhala ndi mainchesi 1 kapena mainchesi 2)—kapangidwe ka nyanga yoyaka yomwe imapatsa chipangizocho dzina lake.

Chizindikiro chachikulu cha cholankhulira cha horn ndi kuthekera kwake kuchita ma acoustic impedance matching. Choyendetsa chokakamiza chimapanga mafunde amawu pamphamvu kwambiri mkati mwa pakhosi lopapatiza la horn. Pamene mafunde amawu akuyenda kunja kudzera mu flare yomwe ikukula, kuthamanga kumachepa pomwe liwiro la tinthu limawonjezeka, zomwe zimagwirizana bwino ndi impedance ya mpweya wotseguka. Kuchita kofanana ndi transformer kumeneku kumalepheretsa kuwunikira kwakukulu kwa acoustic, zomwe zimapangitsa kuti mphamvu zonse zama acoustic ziwonekere patsogolo.

Chifukwa cha mphamvu imeneyi, ma horn speaker amafunika mphamvu zochepa zamagetsi kuti apange ma sound pressure apamwamba poyerekeza ndi ma PA speaker akale. Wokamba horn wamba nthawi zambiri amatha kutulutsa 105 dB mpaka 110 dB kuchokera ku watt imodzi ya mphamvu ya amplifier yoyezedwa pa mita imodzi, poyerekeza ndi 85 mpaka 90 dB yokha ya wokamba kon wamba. Komabe, ma frequency otsika kwambiri omwe horn ingathe kubereka bwino amatengera kuzungulira kwa pakamwa pake. Chifukwa chake, ma horn ambiri ogulitsa paging sangathe kubereka ma bass frequency otsika, zomwe zimapangitsa kuti phokoso liziyang'ana kwambiri ma frequency apakati komanso apamwamba (nthawi zambiri 300 Hz mpaka 8,000 Hz).

Momwe kukweza kwa nyanga kumawonjezera kuoneka kwa mlengalenga

Kukweza kwa nyanga kumasintha kwambiri momwe mafunde amamvekera. Pamene choyendetsa chopanda chopanda kanthu chimatulutsira mphamvu ya mawu mbali zonse, makoma olimba a nyanga amatseka mafunde a mawu, zomwe zimawapangitsa kukhala ndi mawonekedwe enaake, odziwikiratu. Mwa kuletsa mphamvu ya mawu kuti isafalikire molunjika kapena mozungulira m'malo oyandikana nawo, nyangayo imayika mphamvu zonse za mawu zomwe zilipo patsogolo molunjika pa mzere wake waukulu.

Kuchuluka kwa mphamvu kumeneku kumalola olankhula a horn kufika pa mtunda waukulu, nthawi zambiri kuwonetsa mawu omveka bwino mamita 50 mpaka 150 kapena kuposerapo. Kapangidwe kake kamaonetsetsa kuti mafunde a phokoso lapamwamba amakhalabe ogwirizana, zomwe zimathandiza kuti mafupipafupi ofunikira a mawu a anthu (2 kHz mpaka 4 kHz) azitha kudutsa m'malo odzaza ndi phokoso bwino kwambiri kuposa gwero la mawu ofalikira kwambiri.

Kugwiritsa ntchito bwino kwambiri panja komanso m'mafakitale

Kapangidwe ka mawu a ma speaker a horn kamapangitsa kuti akhale chisankho chabwino kwambiri pa malo akunja komansontchito zolemera zamafakitaleM'malo monga masiteshoni a sitima, madoko otumizira katundu, ndi malo oimika matabwa, kulengeza uthenga patali kwambiri ndikofunikira. Chingwe chopapatiza cha sipika ya horn chimasefa phokoso lotsika la injini za dizilo ndi makina olemera, kuonetsetsa kuti chizindikiro cholumikizira mawu chili pamalo osiyana, omveka bwino mu acoustic spectrum.

Kuphatikiza apo, ma speaker a horn ndi olimba mwachibadwa. Chifukwa chakuti diaphragm yofewa imatsekedwa bwino mkati mwa chivundikiro cholemera cha driver wokakamiza, imatetezedwa ku zinthu zakunja. Ma speaker ambiri a horn amapangidwa ndi pulasitiki ya ABS yosagonjetsedwa ndi UV, aluminiyamu yophwanyidwa, kapena fiberglass, zomwe zimapangitsa kuti zikhale zosavuta kupeza ma IP66 kapena IP67 ndipo zimagwira ntchito m'mabande otentha kwambiri (monga -40°C mpaka +60°C). Izi zimapangitsa kuti zikhale zabwino kwambiri m'malo a m'nyanja, malo oikamo nyengo yoipa kwambiri, komansomalo opangira zinthu zoopsa.

Kuyerekeza kwa Mafotokozedwe

Poyesa ma speaker a PA poyerekeza ndi ma horn speaker a malonda, ma AV integrators amadalira seti yokhazikika ya ma electro-acoustic specifications kuti alosere momwe makina amagwirira ntchito. Mapulogalamu opanga ma acoustic modeling, monga EASE (Enhanced Acoustic Simulator for Engineers), amagwiritsa ntchito ma specifications awa kuti apange mamapu otentha a milingo ya phokoso ndi ziwerengero zomveka bwino pa digito ya 3D ya malo ochitirako msonkhano.

Ziyeso zofunika kwambiri zimaphatikizapo kuyankha pafupipafupi, kukhudzidwa (SPL pa 1W/1m), ngodya yodziwika bwino, ndi Speech Transmission Index (STI) yomwe imabwera chifukwa cha izi. Kuphatikiza apo, zofunikira zakuthupi ndi zamagetsi zimatengera momwe chipangizochi chimakhalira komanso mtengo wonse wa umwini wake pa nthawi yonse yogwira ntchito.

Kuyankha pafupipafupi, SPL, ndi ngodya yophimba

Monga momwe tafotokozera mu kufananiza kwazinthu, kuyankha kwa pafupipafupi kwa sipika yokhazikika ya PA kumalola kubwereza nyimbo zambiri, koma kuthekera konseku kumafuna mphamvu yowonjezera ya amplifier (nthawi zambiri 15W mpaka 30W pa sipika iliyonse) kuti ikwaniritse ma SPL apamwamba. Ngodya yake yayikulu yophimba imatanthauza kuti phokoso limafalikira mwachangu kwambiri patali, motsatira lamulo la inverse square (-6 dB pa kuwirikiza kawiri kwa mtunda).

Ma speaker a Horn amagwira ntchito mosiyanasiyana kwambiri pamasamu. Mayankho awo ofupikitsidwa amafanana bwino ndi mawu a anthu. Popeza mphamvu sizimawonongeka pobweretsa ma frequency otsika omwe amafuna mphamvu, mphamvu zimakhala zapamwamba kwambiri. Kuphatikiza ndi ngodya yopapatiza, SPL iyi yolumikizidwa pamalo amodzi imalunjika komwe ikufunika ndi mphamvu yochepa (nthawi zambiri imakwaniritsa ma SPL omwe akufuna ndi mphamvu ya 2W mpaka 5W yokha).

Kuzindikira, mtunda woponya, ndi mtundu wa nyimbo

Kuzindikira bwino mawu amalonda kumayesedwa bwino pogwiritsa ntchito Speech Transmission Index (STI), sikelo kuyambira 0.0 mpaka 1.0. Ma code oteteza moyo (monga NFPA 72 kapena EN 54-24) nthawi zambiri amafuna STI yosachepera 0.45 mpaka 0.50 pa ma alarm adzidzidzi. Pa mtunda waufupi m'zipinda zokonzedwa ndi mawu, okamba mawu a PA amapeza zigoli zabwino kwambiri za STI (nthawi zambiri >0.60). Komabe, m'malo akuluakulu, okamba mawu obwerezabwereza, kufalikira kwakukulu kwa okamba mawu a PA kumasangalatsa malo obwerezabwereza a chipindacho, zomwe zimapangitsa kuti mawu amveke bwino omwe amawononga kwambiri STI.

Oyankhula a Horn amachita bwino kwambiri posunga zigoli zapamwamba za STI patali kwambiri m'malo ovuta a acoustic. Mwa kuletsa mphamvu ya acoustic ku kuwala kopapatiza, olankhula a horn amachepetsa kuwala kwa padenga ndi makoma am'mbali. Komabe, mawonekedwe omwewa a acoustic amachititsa kuti olankhula a horn asakhale oyenera kusewera nyimbo zapamwamba, chifukwa kusowa kwa bass ndi midrange yokwezedwa kwambiri kungayambitse kutopa kwa omvera ngati agwiritsidwa ntchito pa nyimbo zopitilira kumbuyo.

Mtengo, kulimba, ndi phindu la moyo

Kuchokera ku lingaliro la ndalama zogulira (CAPEX), okamba nkhani wamba a PA nthawi zambiri amakhala otsika mtengo pa unit iliyonse (nthawi zambiri $40 mpaka $150 USD) kuposa okamba nkhani wamba a mahoni a mafakitale. Komabe, moyo wawo umadalira kwambiri chilengedwe; kugwiritsa ntchito okamba nkhani wamba a PA m'nyumba m'malo okhala ndi chinyezi chambiri kapena akunja kudzafuna kusinthidwa pafupipafupi (nthawi zambiri sizigwira ntchito mkati mwa zaka ziwiri kapena zitatu).

Ma speaker a Horn ndi ndalama zambiri zoyambira ($100 mpaka $400+ USD) koma amapereka kulimba kwapamwamba kwambiri komanso moyo wabwino m'malo ovuta, nthawi zambiri amakhala ndi moyo wazaka 15 mpaka 20. Zipangizo monga UV-stabilized polycarbonate ndi spun aluminiyamu zimalimbana kwambiri ndi kuwonongeka kwa chilengedwe. Kuphatikiza apo, ma driver ambiri opanikizika apamwamba amakhala ndi ma diaphragm a voice coil omwe amatha kusinthidwa, zomwe zimathandiza akatswiri kukonza driver wophulika pamtengo wotsika poyerekeza ndi speaker yatsopano.

Momwe Mungasankhire Wokamba Nkhani Woyenera

Kusankha ukadaulo woyenera wa mawu okweza mawu ndi njira yosiyana siyana yomwe imafuna kuwunika momwe mawu amamvekera, zoletsa zamagetsi, ndi malamulo otsatira chitetezo cha moyo. Ogwirizanitsa ayenera kupanga gulu logawidwa lomwe limapereka chithandizo chofanana, likukwaniritsa chiŵerengero chofunikira cha chizindikiro-kwa-phokoso (cholinga chokhazikika ndi +10 dB mpaka +15 dB kuposa phokoso lozungulira), ndipo limalumikizana mosamala ndi zomangamanga zomwe zilipo kale.

Gawo lokonzekera liyenera kuyamba ndi kufufuza bwino malo kapena kusanthula mapulani a zomangamanga. Kupanga ma acoustic model kumalimbikitsidwa kwambiri m'malo ovuta kuti adziwiretu momwe kuwongolera kwa honi kapena kufalikira kwakukulu kwa cholankhulira cha PA kudzagwirizanirana ndi malire enieni a chipindacho.

Gwirizanitsani mtundu wa wokamba nkhani ndi malo ndi omvera

Matrix yoyamba yokhudza zisankho zofunika kwambiri imaphatikizapo kufananiza transducer ndi phokoso la chilengedwe komanso ntchito yayikulu ya omvera. Ogwirizanitsa ayenera kuyeza kuchuluka kwa phokoso lapakati komanso lapamwamba (mu dB-A) la malowo.

Ngati malo ogulitsira ali ndi phokoso la 65 dB, netiweki ya ma speaker a PA okhala padenga ipereka mosavuta ma paging omveka bwino pamene ikusunga mayankho ambiri ofunikira pa nyimbo zakumbuyo zapamwamba.

Mosiyana ndi zimenezi, ngati malo oimika magalimoto a boma ali ndi phokoso la 85 dB chifukwa cha kuchuluka kwa magalimoto, wokamba nkhani wamba wa PA mwina sangapereke uthenga womveka bwino. Dongosololi liyenera kugwiritsa ntchito ma speaker a horn omwe akuyang'ana m'misewu yoyendetsera galimoto kuti achepetse phokoso la injini ndikuwongolera mphamvu ya mawu, kuti isagwedezeke kosatha pa simenti. Pankhaniyi, omvera amangofunika kumva bwino malangizo ochoka kapena machenjezo achitetezo.

Chongani mphamvu, impedance, nyengo,

ndi zofunikira pakuyika kuti zitsimikizire kudalirika kwa nthawi yayitali. Zosowa za mawu zikakwaniritsidwa, onetsetsani kuti sipika yosankhidwayo ikugwirizana ndi mphamvu ya amplifier (kusunga malire a headroom osachepera 20%) ndi kapangidwe ka impedance ya makina (monga, 70V/100V vs. 8-ohm). Kuphatikiza apo, onaninso mosamala IP (Ingress Protection). Ngakhale kuti sipika za horn zimapambana mwachibadwa m'mikhalidwe yovuta, opanga ambiri tsopano amapereka sipika za PA zowunikira mwachindunji zomwe sizingagwere nyengo, IP55-rated direct-radiating PA madera akunja. Mosiyana ndi zimenezi, sipika za horn nthawi zambiri zimayikidwa m'nyumba m'malo aphokoso, obwerezabwereza monga mafakitale opanga. Pamapeto pake, kusankha pakati pa sipika ya PA ndi sipika ya horn kumadalira kugwirizanitsa kukhulupirika kwa mawu motsutsana ndi kutulutsa kosaphika ndi kuwongolera. Poyesa phokoso lozungulira, mtunda wofunikira, ndi zomwe zili mkati mwa mawu, opanga makina amatha kugwiritsa ntchito ukadaulo woyenera wolumikizirana momveka bwino komanso modalirika.

Mfundo Zofunika Kwambiri

• Gwiritsani ntchito ma speaker a PA omwe amawala mwachindunji ngati mukufuna kuphimba mawu ndi nyimbo m'njira zosiyanasiyana, nthawi zambiri kuyambira 60 Hz mpaka 20,000 Hz.
• Gwiritsani ntchito ma speaker a horn pamene cholinga chachikulu ndi kutulutsa mawu bwino kwambiri patali, makamaka m'malo aphokoso, panja, kapena m'mafakitale.
• Konzani njira yolumikizira mawu pogwiritsa ntchito kufalikira: ma speaker ambiri a PA amafalitsa mawu pafupifupi 90° mpaka 120°, pomwe ma speaker a horn amatha kuyang'ana kutulutsa mawu pafupifupi 60° ndi 40° kapena mocheperapo.
• Pa ntchito zadzidzidzi komanso zodziwitsa anthu ambiri, pangani mapulani ozungulira zolinga zomveka monga matenda opatsirana pogonana opitilira 0.50 m'malo mongolankhula mokweza.
• Pewani kugwiritsa ntchito ma speaker a horn ngati ma speaker a nyimbo okwana bwino chifukwa ma model ambiri amataya mphamvu yotulutsa mawu otsika kwambiri pansi pa 300 Hz.
• Gwirizanitsani mtundu wa sipika ndi momwe malo amagwirira ntchito, kuphatikizapo phokoso la pamalopo, mtunda wotayira, kutalika kwa denga, kukhudzana ndi nyengo, ndi zofunikira pa malo oopsa.

Mafunso Ofunsidwa Kawirikawiri

Kodi wokamba nkhani wa PA ndi wofanana ndi wokamba nkhani wa horn?

Sichoncho kwenikweni. Wokamba mawu wa PA nthawi zambiri ndi mawu otakata, koma mu mawu ogawidwa nthawi zambiri amatanthauza wokamba mawu wolunjika. Wokamba mawu wa horn amagwiritsa ntchito chowongolera chokakamiza ndi horn yowala kuti awonetse mawu patali komanso bwino.

Kodi ndiyenera kusankha liti cholankhulira cha horn?

Sankhani cholankhulira cha honi kuti muzitha kugwiritsa ntchito page yakutali, machenjezo a zadzidzidzi, malo akunja, kapena malo opangira phokoso m'mafakitale komwe kumveka bwino kwa mawu ndi kuwonetsa mawu ndikofunikira kwambiri kuposa mtundu wa nyimbo.

Kodi wokamba nkhani wamba wa PA ndi liti pamene ali bwino?

Wokamba nkhani wamba wa PA ndi wabwino kwambiri kuti mawu azimveka bwino komanso mwachilengedwe, makamaka komwe nyimbo, zolengeza, ndi mawu olembedwa bwino zimafunika m'maofesi, m'masukulu, m'masitolo, kapena m'nyumba.

N’chifukwa chiyani ma horn speaker amapezeka kwambiri m’mafakitale?

Ma speaker a horn ndi othandiza, otsogolera, komanso amatha kupyola phokoso lalikulu. Izi zimapangitsa kuti azigwiritsidwa ntchito pa migodi, mafuta ndi gasi, mayendedwe, zomangamanga, zapamadzi, ndi malo ena ovuta.

Kodi ma speaker a horn amabereka bwino bass?

Kawirikawiri ayi. Ma speaker a Horn amakonzedwa bwino kuti azitha kumveka bwino ndipo nthawi zambiri amamveka motsika kwambiri pansi pa 300 Hz, pomwe ma speaker ambiri a PA amatha kufalikira pamlingo wokulirapo, nthawi zambiri amakhala pakati pa 60 Hz ndi 20,000 Hz.