Iintetho ezi-7 eziPhambili zeSithethi sikawonke-wonke ezithembekileyo Isithethi se-PA Isithethi se-OEM Intengiso yababoneleli beSithethi

• Khetha isithethi sentetho kawonkewonke ngokwendlela esisebenza ngayo, i-SPL, ukuqina, kunye nokuhlanganiswa kwenkqubo, kungekhona ngokwe-wattage yodwa.
• Ukuze ufumane umboneleli wesithethi se-OEM, qinisekisa iingxelo zovavanyo, amandla okwenza ngokwezifiso, ulawulo lwexesha lokunika i-lead, kunye nenkxaso yezixhobo ezingasetyenziswanga.
• Iiprojekthi zesandi zoshishino kunye nezexesha likaxakeka zifuna uvavanyo olusekelwe kwimigangatho, ingakumbi ukuze ziqondakale kwaye zithembeke.
• Idatha yobungakanani efana nobuthathaka, ukungakwazi ukuthintela, ukulinganiswa kwe-IP, kunye namandla alinganisiweyo kufuneka ibhalwe phantsi ngaphambi kokuba ithengwe.

Isithethi esithembekileyo sentetho yoluntu kufuneka senze okungaphezulu nje kokwenza isandi; kufuneka sinike intetho ecacileyo, imveliso ezinzileyo, kunye nokusebenza okuqikelelweyo kwindawo yokufakelwa yokwenyani. Kwiinkqubo ze-alamu yelizwi kunye ne-paging, ukuqonda kubalulekile kuba injongo ayikokuvakala nje kodwa kukuhambisa umyalezo ngokuchanekileyo, ingakumbi kwiindawo ezinengxolo apho ukufihla intetho kunokuba nzima khona. Isikhokelo soshishino esifana nesoI-NFPA 72kunye nesakhelo se-ISO soyilo lwenkqubo ye-alamu yelizwi kunceda abathengi ukuba bavavanye ukuba isithethi se-PA sifanelekile na kukhuseleko lobomi, kwiipeji zemizi-mveliso, okanye kwizibhengezo eziqhelekileyo. Kubathengi beprojekthi, umthengisi wesithethi se-OEM othembekileyo kufuneka anikezele ngokuthelekiswa kwesicelo, ukuhambelana kombane, kunye namaxwebhu omgangatho olandelekayo.

Indlela yokukhetha isithethi sentetho esidlangalaleni kwiiprojekthi zoshishino nezorhwebo

Isithethi esilungileyo sentetho kawonke-wonke seso sihambelana neemfuno ze-acoustic kunye nemeko-bume yendawo. Isithethi esisebenza kakuhle kwindawo yokuthengisa sinokungaphumeleli kwindawo yokugcina impahla, iqonga lezothutho, umgangatho wefektri, okanye ebaleni langaphandle kuba umgangatho wengxolo, isandi sokuvakala, kunye nomgama wokufakelwa kwahlukile ngokupheleleyo. Umsebenzi wokuqala womthengi kukuchonga apho isandi kufuneka siviwe khona, kumgama ongakanani, kwaye phantsi kweziphi iimeko zokusingqongileyo.

Kumsebenzi wokukhetha okwenziwayo, amanani amathathu abalulekile kuqala: uvakalelo, amandla alinganisiweyo, kunye nepateni yokugubungela. Uvakalelo ludla ngokubonakaliswa njenge-dB kwi-1 W / 1 m, amandla alinganisiweyo adla ngokuboniswa kwiiwatts, kwaye i-engile yokusasazeka ikuxelela ukuba ingakanani indawo enokugubungela iyunithi nganye. Isithethi esinovakalelo oluphezulu sinokufikelela kwi-SPL efunekayo ngamandla amancinci e-amplifier, ngelixa i-engile yokugubungela encinci inokuphucula ukugxila kwentetho kwiindlela ezinde okanye kwiindlela zangaphandle.

Kwiindawo zokufakela izithethi ezininzi, ukusasazwa kwe-70 V okanye i-100 V kuqhelekile kuba kwenza kube lula ukunxibelelana kweentambo kwaye kuvumela izithethi ezininzi kumgca omnye. Inkqubo yombane wokwenyani kufuneka ijongwe ngokuchasene nenkqubo yendawo kunye noyilo lwe-amplifier. Kwizitishi ezinkulu, ucwangciso olungalunganga lwe-impedance lunokudala iindawo ezibuthathaka, ukunqunyulwa kwe-amplifier, okanye amanqanaba angalinganiyo e-paging anciphisa ukucaca kwentetho.

Kubathengi abathelekisa iimodeli, indlela emfutshane eluncedo kukuqalaizixhobo zonxibelelwano lwemizi-mvelisoUkuba iprojekthi iqhutywa kukhuseleko, yinciphe uye kwi-paging ekunene okanye kwi-architecture yesaziso. Ukuba umsebenzi ubandakanya impendulo engxamisekileyo, ukuhlanganiswa kwe-alamu yelizwi, okanye ukunyuka kwe-alamu, ukuhambelana kwinqanaba lenkqubo kufuneka kudlule ukhetho lwe-cosmetic.

Isithethi sedilesi kawonke-wonke, isithethi se-PA, kunye nomthengisi wesithethi se-OEM: oko kuthetha ukuthini igama ngalinye

Amagama athi isithethi sedilesi kawonkewonke kunye nesithethi se-PA adla ngokusetyenziswa ngokutshintshana, kodwa umxholo wokuthenga awusoloko ufana. Isithethi se-PA sihlala sisixhobo sokugqibela sesandi esisebenzayo kwinkqubo ye-paging okanye yesaziso, ngelixa isithethi sedilesi kawonkewonke sinokuchazwa ngokubanzi kusetyenziso lwentengiso, lweziko, okanye lwemizi-mveliso. Kumaqela okuthenga, olu mahluko lubalulekile kuba usapho olunye lwemveliso lunokuthengiswa ngeekhithi ezahlukeneyo zokufakela, izinto ezibiyelweyo, kunye neendlela zombane womgca.

Umthengisi wesithethi se-OEM wongeza olunye udidi: umthengisi akathengisi nje kuphela iyunithi egqityiweyo kodwa ukwaxhasa ilebheli yabucala, ukwenziwa ngokwezifiso okulinganayo, ukulungiswa kwe-acoustic, kunye nokudibanisa nomgca wemveliso yophawu. Oko kuthetha ukuba umthengisi kufuneka alawule izinto eziguquguqukayo ezingaphezulu, kubandakanya ukuhambelana komqhubi, umgangatho wokuvalwa, ukuqina kwesixhumi, kunye nokuphindaphinda kovavanyo. Abathengi kwiiprojekthi ze-B2B kufuneka bacele uhlobo olufanayo lobungqina abanokubucela kuyo nayiphi na imveliso eyenziwe ngobunjineli: ulawulo lokuzoba, ukuvunywa kwesampuli, umgaqo-nkqubo wokutshiswa, kunye nokulandeleka kwemveliso.

Xa ufuna ulwazi kumthengisi wesithethi se-OEM, ulwazi lobuchwephesha alwanelanga ngokwalo. Ulwazi lolwazi kufuneka luxhaswe ngamandla okuvelisa, ukuqinisekiswa kwesampuli, kunye nemodeli yenkonzo enokusingatha iindawo ezitshintshwayo kunye nolawulo lohlaziyo. Oku kubaluleke kakhulu kwiiprojekthi ezinolindelo olude lomjikelo wobomi, kuba icandelo le-acoustic olithengayo namhlanje linokufuna ukuxhaswa iminyaka.

Kwabacwangcisi beenkqubo,izisombululo zenkqubo ye-pagingIhlala iyindawo engcono yokuqala kunokukhangela kwimveliso enye kuba isithethi esifanelekileyo sedilesi kawonke-wonke sixhomekeke kwi-amplifier, ukusasazwa komgca, kunye ne-topology yokufakela. Ukuba iprojekthi iyakhiwa ngokubanzi, loo mbono wenkqubo unokuthintela uyilo olutsha olubizayo kamva.

Iinkcukacha zobugcisa ezahlula isithethi se-PA esithembekileyo kwiyunithi eqhelekileyo

Isithethi se-PA esithembekileyo sichazwa kukusebenza okuphindaphindwayo, kungekuphela nje ilebheli enamandla aphezulu. Abathengi badla ngokugxila kumandla ombane, kodwa amandla ombane kuphela awakuxeleli ukuba intetho ingahamba kangakanani, ukuba igubungela igumbi ngokulinganayo kangakanani, okanye ukuba kubonakala kangakanani ukugqwetheka kwinqanaba lokusebenza. Uluhlu lokukhangela oluluncedo ngakumbi lubandakanya uvakalelo, impendulo yamaza amaninzi, inqanaba loxinzelelo lwesandi, izinto ezivalekileyo, ukhuseleko lokungena, kunye nendlela yokufakela.

Iinkqubo zentetho zihlala zibeka phambili ummandla we-mid-band kuba ukuqondwa kuxhomekeke kakhulu kumandla ee-consonants. Isithethi esine-bass extension ebanzi kodwa esicacileyo esiphakathi sinokuvakala simangalisa xa sidlala umculo kodwa singaphumeleli ekukhupheni ilizwi. Ngenxa yeso sizathu, izithethi ezininzi ze-PA zemizi-mveliso zilungiselelwe ukuveliswa kwelizwi endaweni yokusebenzisa i-hi-fi epheleleyo.

Kwiindawo ezingaphandle okanye ezibonakala kancinci, ukuqina kokusingqongileyo kubalulekile. Uthuli, ukufuma, ityuwa etshizayo, kunye nokujikeleza kobushushu kunokonakalisa iiterminals, iikhowuni, okanye iindawo ezibiyelweyo ixesha elide ngaphambi kokuba umqhubi we-acoustic afikelele kumda wobomi bakhe obuqhelekileyo. Yingakho abathengi bemizi-mveliso kufuneka bacele iinkcukacha zezinto eziphathekayo, iinkcukacha zoyilo lwe-gasket, kunye nobungqina bovavanyo lokusingqongileyo endaweni yokucinga ukuba zonke izithethi ezilinganiswe ngemozulu ziyalingana.

Kwindlela efanayo yokufumana imveliso, inkqubo ebanzi yemveliso ibalulekile. Umthengisi okwabonelelaiifowuni zoshishinoUhlala eqonda ukuthembeka kwenkqubo kwiindawo ezinzima ngaphezu komthengisi othengisa kuphela iimveliso zesandi zabathengi. Loo meko inokubaluleka xa isithethi se-PA kufuneka sisebenze kunye neendawo zonxibelelwano ezingxamisekileyo.

Indlela yokuvavanya umthengisi wesithethi se-OEM ngaphambi kokufaka i-odolo yeprojekthi

Umthengisi wesithethi se-OEM kufuneka ahlolwe njengeqabane lobunjineli, kungekuphela nje njengomthengisi. Eyona mpazamo ixhaphakileyo yokufumana ulwazi kukuvuma isampulu evakala yamkelekile kwigumbi lokubonisa kodwa engaphumeleli kwiimeko zentsimi kuba umthengisi akazange abhale phantsi ukunyamezela imveliso, ukufumana izinto ezithile, okanye ukuhambelana kwexesha elide.

Ngaphambi kokuba afake iodolo, amaqela okuthenga kufuneka ajonge ukuba umthengisi angawuxhasa na umsebenzi weelebheli zabucala, ukuguqulwa kwe-enclosure, utshintsho lwe-connector, ii-impedance variants, kunye nomsebenzi wobugcisa okanye ukwenziwa ngokwezifiso kwepakeji. Kufuneka bacele ubungqina be-QA, kubandakanya ukuhlolwa okungenayo, uvavanyo lokugqibela lwe-acoustic, kunye nokuqinisekiswa kwepakeji. Ukuba umthengisi akanakuchaza indlela egcina ngayo ukuhambelana ukusuka kwisampulu ukuya kwimveliso yobuninzi, olo luphawu lomngcipheko.

1. Cela iphepha ledatha elipheleleyo elinobuntununtunu, ukuthintela, amandla alinganisiweyo, kunye neenkcukacha zokuvala.
2. Cela imifanekiso yesicelo ebonisa iindawo zokufakelwa zokwenyani.
3. Qinisekisa ukuhambelana kwesampulu nemveliso ngenkqubo yokuvunywa kwenqaku lokuqala.
4. Qinisekisa ixesha lokuqalisa, icebo lezinto ezingasetyenziswanga, kunye nolawulo lohlaziyo.
5. Jonga imiqathango yewaranti kunye nexesha lokuphendula endaweni yesixhobo.

Umthengisi wesithethi we-OEM othembekileyo uya kuchaza nokuba imveliso ayifanele isetyenziswe phi. Oko kunokuvakala kungalunganga, kodwa eneneni luphawu lokuthembana. Umzekelo, ukuba isithethi senzelwe ukupeyinta ngaphakathi, umthengisi kufuneka atsho ngokucacileyo endaweni yokubonisa ukufaneleka kwendawo yangaphandle okanye enobungozi engakhange ivavanywe.

Kwiindawo ezinkulu, ukuthengwa kwempahla kudla ngokuqhagamshela izixhobo zesandi nezicwangciso zonxibelelwano ezibanzi zokhuseleko. Ukuba iprojekthi yakho ikwabandakanya ulungelelwaniso lwe-alamu kunye nongxamiseko, hlaziyaizisombululo ze-intercom ezingxamisekileyoinokunceda ukulungelelanisa inethiwekhi yezithethi kunye neendlela zokusebenza zokuphendula. Olu hlobo lokucinga ngenkqubo lunciphisa ukumangaliswa kokudibanisa kamva.

Imigangatho, uvavanyo, kunye namanani abathengi abafanele bawacele

Imigangatho yenza ukuthengwa kwezithethi kube sesikweni ngakumbi kuba iguqula amabango angacacanga abe yimigangatho evavanywayo. Kwiinkqubo zelizwi ezingxamisekileyo,I-ISO 7240-16igubungela izinto zenkqubo yesandi, ngelixaI-NFPA 72isetyenziswa kakhulu kwiinkqubo zonxibelelwano lwe-alamu yomlilo kunye neenkqubo zonxibelelwano olungxamisekileyo eMelika. Ukuba le projekthi ikwimeko elawulwayo, umthengisi kufuneka akwazi ukuhlanganisa amaxwebhu emveliso yakhe kwiseti efanelekileyo.

Enye yezona ngcamango ziluncedo kakhulu ze-acoustic kukuqondwa kwentetho. Ngokwendlela esebenzayo, ukuba umphulaphuli akanakuyiqonda isigidimi, ukukhwaza kuphela akwanelanga. Eli shishini lidla ngokusebenzisa i-STI, okanye i-Speech Transmission Index, kunye neendlela ezinxulumene noko ukuvavanya ukuqondwa kwiindawo zokwenyani. Nangona iithagethi ezichanekileyo zixhomekeke kwikhowudi kunye nokusetyenziswa, ingongoma ephambili kukuba ukufakelwa kokwenyani kufuneka kulinganiswe, kungekhona ukuqikelela.

Umthetho oluncedo kukuba umthengi akafanele amkele kuphela amabinzana okuthengisa anje ngokuthi “loud,” “clear,” okanye “durable.” Cela ubungqina bamanani: ubuntununtunu kwi-dB, amandla kwiiwatts, impedance kwi-ohms, i-IP rating, kunye nomgangatho okanye indlela esetyenziswayo kuvavanyo. Loo manani ngawona avumela iinjineli, abahlanganisi, kunye namaqela okuthenga ukuba bathelekise iimodeli ngokufanelekileyo.

Ukuze kucwangciswe ipotifoliyo yexesha elide, abanye abathengi baphinda bahlole amaphepha ezisombululo afana nalaiinkqubo ze-intercomkuba isithethi se-PA sidla ngokuba yinxalenye yoyilo olubanzi lonxibelelwano olungxamisekileyo. Oko kuyinyani ngakumbi kwiprojekthi zoshishino, zekhampasi, nezothutho apho imisebenzi ye-paging, i-intercom, kunye ne-alamu idibana khona.

Apho isithethi sentetho kawonkewonke singaphumeleli khona entsimini kwaye singayiphepha njani loo nto

Isithethi sentetho esidlangalaleni sidla ngokusilela entsimini kuba imeko yofakelo yayingathathelwa ngqalelo. Iingxaki eziqhelekileyo kukungaphumeli ngokwaneleyo kwiindawo ezinengxolo, i-engile yokufakela engalunganga, ukulayisha okungachanekanga kwe-impedance, kunye nokuvezwa kumswakama okanye ukungcangcazela. Ezi ntsilelo aziqhelekanga ukuba ziyimfihlo; zihlala zibangelwa kukukhetha udidi lwemveliso ngaphandle kokuqinisekisa iimeko zendawo.

Ingxolo yenye yezona zinto zifihlakeleyo kakhulu. Kwiindawo zoshishino, umgangatho wengxolo yangasemva unokuphakama ngokwaneleyo kangangokuba intetho ifihlakele nokuba isithethi sisebenza ngokuqhelekileyo. Kwezo meko, iinjineli zihlala zisombulula ingxaki ngokusebenzisa indawo yesithethi ekufutshane, iiyunithi zobuntununtunu obuphezulu, okanye uyilo lwenkqubo esasazekileyo enciphisa ukulahleka komgama. Injongo ayikokwenza isithethi sivakale kakhulu nje kuphela, kodwa kukuphucula ukugcinwa kwemiyalezo kwindawo yomphulaphuli.

• Musa ukwenza ubungakanani benkqubo ngokwendawo yegumbi kuphela; sebenzisa inqanaba lengxolo, ukuphakama kokuyibeka, kunye nomgama womphulaphuli.
• Musa ukucinga ukuba izithethi zangaphakathi nezangaphandle ziyatshintshana.
• Musa ukuyityeshela i-headroom ye-amplifier, ingakumbi kwiinkqubo ezineendawo ezininzi.
• Musa ukuvuma umthengisi ngaphandle kwesampuli kunye nedatha yovavanyo.

Enye into eyenzeka rhoqo xa kusilela kukugcinwa. Ukuba indawo ebiyelweyo kunzima ukuyivula, izixhobo zokufakela azikho semgangathweni, okanye azifumaneki, iindleko zobomi bonke zinyuka ngokukhawuleza. Yiyo loo nto abathengi beprojekthi behlala bekhetha ababoneleli abanokuxhasa ukunikezelwa kwesixhobo kunye nokuqhubeka kwaso emva kokuthengisa. Enyanisweni, umthengisi wesithethi se-OEM ongcono kakhulu akanciphisi umngcipheko weendleko zeyunithi kuphela kodwa kunye nomngcipheko wexesha lokungasebenzi.

Iikhrayitheriya ezisixhenxe eziphezulu zokuthembeka ekufumaneni isithethi esidlangalaleni

Abona banikezeli bentetho yesidlangalala abathembekileyo asibo abanezibhengezo ezivakala kakhulu; ngabo abanokuphinda-phinda. Xa uthelekisa abanikezeli, gxila kwiikhrayitheriya ezisixhenxe ezifanayo ngalo lonke ixesha ukuze isigqibo sihlale singenamkhethe kwaye siphicothwe.

1. Ukusebenza kwe-acoustic:uvakalelo, i-SPL, kunye nepatheni yokugubungela kufuneka ihambelane nendawo.
2. Ukuhambelana kombane:Iinketho ze-8 ohm, 70 V, okanye i-100 V kufuneka zihambelane nenkqubo.
3. Ukuqina kwendalo:indawo ebiyelweyo kunye nezixhobo kufuneka zilungele umgangatho wokuvezwa.
4. Umgangatho wamaxwebhu:amaphepha edatha, idatha yovavanyo, kunye nemizobo kufuneka icace kwaye ibe yeyangoku.
5. Ukuguquguquka kwe-OEM:Iinketho zokufaka ilebhile yabucala, umbala, isixhumi, kunye nokufakelwa kufuneka zifumaneke ukuba kuyimfuneko.
6. Uzinzo lokubonelela:ixesha lokuqhuba, izixhobo ezingasetyenziswanga, kunye nolawulo lokuhlaziya iiprojekthi zeminyaka emininzi.
7. Ulungelelwaniso lwemigangatho:umthengisi kufuneka aqonde ikhowudi efanelekileyo kunye nolindelo lovavanyo.

Kubathengi abakha uluhlu olufutshane,izisombululo zenkqubo yedilesi kawonkewonkeibonelela ngendlela esebenzayo yokuthelekisa iintsapho zezixhobo endaweni yeemveliso ezizimeleyo. Oko kwenza kube lula ukubona ukuba isithethi, i-amplifier, kunye noyilo lolawulo ziyahambelana na ngaphambi kokuba kuqale ingxoxo yorhwebo.

Kumsebenzi wokuthenga ngokwenene, umbuzo ochanekileyo awungowokuba “Sesiphi isithethi esilungileyo?” kodwa “Sesiphi isithethi esifanelekileyo kule ndawo, le mfuneko yekhowudi, kunye nale modeli yolondolozo?” Loo tshintsho kwifreyimu ludla ngokukhokelela kwizigqibo ezingcono, utshintsho oluncinci lwentsimi, kunye neendleko eziphantsi zomjikelo wobomi.

Imibuzo ebuzwa rhoqo malunga nesithethi sedilesi kawonkewonke, isithethi se-PA, kunye nomthengisi wesithethi se-OEM

Yeyiphi eyona nto ibalulekileyo kwisithethi sentetho kawonkewonke?

Uvakalelo ludla ngokuba yinto yokuqala ekufuneka iqwalaselwe kuba ibonisa indlela isithethi esiguqula ngayo amandla okufaka abe luxinzelelo lwesandi esiphumayo. Emva koko, qinisekisa amandla alinganisiweyo, i-impedance, kunye ne-engile yokugubungela.

Ngaba isithethi se-PA sahlukile kwisithethi sentetho kawonke-wonke?

Kwiiprojekthi ezininzi, la magama asetyenziswa ngendlela efanayo. Nangona kunjalo, ekuthengeni, isithethi se-PA sidla ngokubhekisa kwindawo yokugqibela yenkqubo, ngelixa isithethi sentetho kawonkewonke sinokuchaza udidi olubanzi lwemveliso yokusetyenziswa kwezaziso.

Ndingazi njani ukuba umthengisi wesithethi se-OEM uthembekile?

Cela imizobo yemveliso, iirekhodi zokuvunywa kwesampuli, idatha yovavanyo lwe-acoustic, kunye nenkqubo ecacileyo yokulawula uhlaziyo. Umthengisi othembekileyo angabonisa indlela egcina ngayo ukuhambelana ukusuka kwiprototype ukuya kwimveliso enkulu.

Ngaba ndifuna inkqubo yesithethi ye-70 V okanye ye-100 V?

Iinethiwekhi ze-paging zorhwebo nezemizi-mveliso ezisasazekileyo zihlala zisebenzisa imigca ye-70 V okanye i-100 V kuba zenza kube lula ukwandiswa kweentambo kunye nokwandiswa kwendawo. Ukhetho oluchanekileyo luxhomekeke kwindlela yokusebenza yendawo kunye noyilo lwe-amplifier.

Yeyiphi imigangatho ekufuneka ndiyijonge xa ​​kufuneka isetyenziswe ngexesha likaxakeka?

Kwizicelo zelizwi ezingxamisekileyo, abathengi badla ngokubhekisa kuzoI-ISO 7240-16kwayeI-NFPA 72Imithetho esebenzayo ixhomekeke kwilizwe, isicelo, kunye neenkcukacha zeprojekthi.

Kutheni ukucaca kwentetho kubaluleke ngaphezu kwesandi esikhulu?

Kuba abantu kufuneka bawuqonde umyalezo, ingakumbi ngexesha lee-alamu okanye izibhengezo zokusebenza. Isithethi esikhulu kodwa esingacacanga sinokubangela ukudideka endaweni yokhuseleko.

Yintoni endifanele ndiyibuze ngaphambi kokuba ndithenge ngobuninzi kumthengisi wesithethi se-OEM?

Qinisekisa ixesha lokuqalisa, ukufumaneka kwezixhobo ezingasetyenziswanga, umgangatho wokupakishwa, ukuhambelana kwesandi, kunye nokuba umthengisi angayixhasa na imfuneko yokufakelwa ilebhile yabucala okanye eyenzelwe wena.