Vim Li Cas Kev Xaiv Lub Tshuab Hais Lus Sab Nraud Tseem Ceeb
Kev xaiv lub tshuab hais lus sab nraum zoov muaj ntau yam teeb meem ntawm lub suab thiab ib puag ncig. Ib qho yuam kev hauv kev lag luam feem ntau yog kev kho cov khoom siv no ua cov khoom siv hauv khw, ua rau tsis nkag siab zoo, tsis txaus kev npog, thiab ua tsis tiav ua ntej lub sijhawm. Cov neeg koom ua ke ntawm lub kaw lus yuav tsum soj ntsuam lub cev suab nrog rau cov kev txwv tshwj xeeb ntawm qhov chaw kom tsis txhob muaj kev kho dua tshiab kim. Thaum cov thawj coj ua haujlwm tsis quav ntsej txog qhov xav tau ntawm kev faib tawm suab sab nraum zoov, lawv yuav muaj kev pheej hmoo siv cov kab ke uas tsis nkag mus rau hauv pem teb suab nrov lossis lwj sai sai hauv qab kev ntxhov siab ntawm ib puag ncig. Kev lees paub qhov tseem ceeb ntawm cov txheej txheem xaiv no yog thawj kauj ruam rau kev tsim kom muaj lub zog, nkag siab tau.chaw nyob rau pej xeemlossis cov khoom siv rau kev nyab xeeb ntawm lub neej.
Txhais cov hom phiaj ntawm qhov project thiab cov ntaub ntawv siv
Qhov yuam kev thawj zaug feem ntau yog nyob rau hauv cov hom phiaj ntawm qhov project uas tsis tau txhais zoo. Cov neeg hais lus sab nraum zoov ua haujlwm ntau yam, xws li kev teeb tsa suab paj nruag thiab suab paj nruag tom qab mus rau cov tshuab ceeb toom thaum muaj xwm txheej ceev. Txhua daim ntawv thov xav tau cov qauv kev ua tau zoo sib txawv. Piv txwv li, lub tshuab ceeb toom suab yuav tsum ua raws li cov qauv kev nyab xeeb ntawm lub neej, xws li EN 54-24 lossis UL 1480, xav tau cov qhov hluav taws kub tshwj xeeb, cov fuses thermal, thiab cov yam ntxwv tshwj xeeb. Qhov sib piv, iblub tshuab hais lus paging industrialtej zaum yuav muab qhov tso zis siab tshaj plaws tso ua ntej qhov kev tsim tawm zoo lossis kev tiv thaiv hluav taws. Yog tias tsis piav qhia txog cov xwm txheej siv no thaum pib ua haujlwm feem ntau yuav ua rau tus neeg hais lus tsis muaj qhov zaus tsim nyog rau kev hais lus meej lossis tsis ua raws li cov ntawv pov thawj kev cai lij choj.
Soj ntsuam thaj chaw npog, qib suab nrov, thiab qhov deb ntawm tus mloog
Kev ntsuam xyuas thaj chaw npog yuav tsum tau suav qhov deb ntawm tus mloog thiab qib suab nrov ib puag ncig, txawm li cas los xij, ntau tus engineers vam khom kev kwv yees zoo dua li cov ntaub ntawv empirical acoustic. Txoj cai inverse square hais tias qib suab nrov (SPL) poob qis 6 dB rau txhua ob npaug ntawm qhov deb hauv thaj chaw dawb. Yog tias lub tshuab hais lus sab nraum zoov tsim 110 dB ntawm 1 'meter', SPL yuav poob qis mus txog li 86 dB ntawm 16 'meter', thiab poob ntxiv mus rau 80 dB ntawm 32 'meter'. Ntxiv mus, cov ntsiab cai tsim qauv acoustic txheem hais tias lub suab tshaj tawm yuav tsum tshaj qhov suab nrov ib puag ncig tsawg kawg yog 10 txog 15 dB kom ntseeg tau tias kev hais lus nkag siab. Hauv ib lub vaj lag luam nrog lub suab nrov ib puag ncig ntawm 85 dBA, lub tshuab hais lus yuav tsum xa tsawg kawg yog 95 dBA ntawm tus mloog pob ntseg. Kev tsis quav ntsej cov kev xam no yuav ua rau muaj thaj chaw tuag lossis lub suab tsis zoo vim tias cov amplifiers raug thawb mus rau hauv clipping los them rau kev npaj suab tsis txaus.
Cov Lus Qhia Tseem Ceeb los Sib Piv
Kev sib piv cov lus qhia txog kev siv tshuab yog ib theem tseem ceeb uas kev ntsuam xyuas sab nraud feem ntau ua rau muaj kev ua tsis tiav ntawm lub cev. Cov pab pawg yuav khoom feem ntau tsis ua raws li kev ntsuam xyuas lub zog hauv watts, ua yuam kev sib npaug wattage siab dua nrog cov zis suab zoo dua. Yuav tsum muaj kev nkag siab txog cov lus qhia electro-acoustic kom ntseeg tau tias cov khoom siv xaiv tau sib haum nrog qhov tseeb ntawm qhov chaw xa khoom.
To taub SPL, qhov rhiab heev, qhov ntsuas fais fab, thiab impedance
Qhov ntsuas tseem ceeb tshaj plaws rau txhua lub tshuab hais lus sab nraum zoov yog qhov rhiab heev, ntsuas hauv decibels ntawm 1 watt thiab 1 meter (dB @ 1W/1m). Lub tshuab hais lus ua haujlwm zoo heev nrog qhov rhiab heev ntawm 110 dB yuav xav tau lub zog amplifier tsawg dua kom ua tiav lub hom phiaj SPL piv rau tus qauv nrog 95 dB rhiab heev. Cov kws ua haujlwm yuav tsum xam qhov siab tshaj plaws SPL los ntawm kev suav nrog ob qho tib si rhiab heev thiab qhov ntsuas zog siab tshaj plaws es tsis txhob saib wattage hauv kev cais tawm. Tsis tas li ntawd, kev sib phim impedance yog qhov tseem ceeb. Thaum cov tshuab hais lus 8-ohm haum rau kev khiav luv luv, qis zog, kev teeb tsa sab nraum zoov loj vam khom 70V lossis 100V faib cov kab ke suab kom txo qhov voltage poob ntawm cov cable ntev. Kev xaiv cov chaw teeb tsa transformer tap tsis raug lossis tsis sib xws tag nrho cov kab impedance tuaj yeem ua rau kev ua haujlwm poob qis, ua rau muaj kev cuam tshuam, lossis ua rau cov khoom siv amplification puas tsuaj loj heev.
Tshuaj xyuas qhov kev coj ncaj qha, kev teb zaus, thiab kev nkag siab ntawm cov lus hais
Kev nkag siab zoo yog nyob ntawm qhov kev coj thiab kev teb zaus. Cov neeg hais lus Horn yog cov kev coj; lub kaum sab xis feem ntau yuav yog 60 degrees kab rov tav los ntawm 40 degrees ntsug. Yog tsis suav nrog qhov ntsuas kev coj no (Q) ua rau muaj cov suab nqaim uas tsis hnov cov neeg mloog peripheral, tsim cov chaw kub acoustic thiab thaj chaw tuag. Kev teb zaus kuj tseem ceeb ib yam. Thaum cov paging horns feem ntau ua haujlwm ntawm 300 Hz thiab 8 kHz - txaus rau kev xa suab tib neeg yooj yim - lawv tsis txaus rau lub suab puv ntoob. Cov suab paj nruag siv cov ntaub thaiv loj dua thiab cov qauv tsav tsheb ob txoj kev los txuas ntxiv cov lus teb los ntawm 100 Hz txog 15 kHz. Thaum kawg, cov yam no ua rau muaj qhov ntsuas Kev Xa Lus Hais (STI). Lub hom phiaj STI ntawm >0.5 feem ntau yog qhov yuav tsum tau ua rau kev nkag siab zoo hauv cov kab ke hais lus pej xeem, ib qho ntsuas uas tsis tuaj yeem ua tiav yog tias qhov kev teb zaus lossis kev coj ntawm tus neeg hais lus tsis sib haum nrog qhov chaw acoustic.
Siv lub rooj sib piv los ua kom cov lus qhia zoo li qub
Yuav kom cov lus qhia no zoo li qub thiab zam cov lus hais txog kev lag luam tshwj xeeb ntawm cov chaw tsim khoom, cov neeg koom ua ke yuav tsum siv cov qauv sib piv. Qhov no ua kom ntseeg tau tias cov hloov pauv xws li qhov rhiab heev raug ntsuas nyob rau hauv cov xwm txheej zoo sib xws (piv txwv li, 1W / 1m ntawm-axis) thiab cov ces kaum dispersion tau hais ntawm qhov zaus sib xws, feem ntau yog 2 kHz.
| Kev faib tawm ntawm tus neeg hais lus | Qhov rhiab heev ib txwm muaj (1W/1m) | Kev Teb Zaus | Kab rov tav Dispersion (ntawm 2kHz) | Tus nqi siab tshaj plaws ntawm SPL |
|---|---|---|---|---|
| Tus Qauv Paging Horn | 105 – 110 dB | 300 Hz – 8 kHz | 60° – 90° | 120 – 125 dB |
| Lub Tshuab Raj Suab Paj Nruag Ob Txoj Kev | 95 – 100 dB | 100 Hz – 15 kHz | 90° – 120° | 115 – 120 dB |
| Pov Ntev / Muaj Zog Siab | 112 – 115 dB | 400 Hz – 7 kHz | 40° – 60° | 130 – 135 dB |
Siv cov qauv no tso cai rau cov neeg tsim qauv kom paub sai sai txog qhov tsis zoo, xws li lub chaw tsim khoom thov kom muaj kev sib kis dav heev nrog rau lub peev xwm pov ntev heev, uas ua rau lub hauv paus ntawm lub zog acoustic tsis sib xws.
Cov Kev Cai Ib puag ncig thiab Kev Ua Raws Cai
Cov chaw sab nraum zoov ua rau cov khoom siv suab raug kev kub ntxhov, tshuaj lom neeg, thiab lub cev hnyav heev rau lub sijhawm ntev. Ib qho yuam kev feem ntau yog qhov tseem ceeb ntawm kev ua tau zoo ntawm lub suab thaum tsis quav ntsej txog qhov ruaj khov uas yuav tsum muaj kom dim tau cov xwm txheej nyuaj no. Kev tsis quav ntsej txog ib puag ncig thiab kev ua raws li cov cai yuav ua rau muaj kev puas tsuaj sai, kev saib xyuas ntau ntxiv, thiab tej zaum yuav muaj kev lav phib xaub raws li txoj cai.
Tshawb xyuas qhov ntsuas IP, cov ntaub ntawv, thiab kev tiv thaiv xeb
Kev tiv thaiv dej nkag (IP) yog thawj kab tiv thaiv, tab sis cov neeg tsim qauv feem ntau nkag siab yuam kev txog lawv.Kev ntsuas IP65tiv thaiv cov dej ntws qis, tab sis cov chaw teeb tsa uas raug cua daj cua dub hnyav, dej ntws ncaj qha, lossis chaw nyob hauv dej hiav txwv xav tau daim ntawv pov thawj IP66 lossis IP67 rau kev tiv thaiv plua plav thiab dej siab. Kev tsim khoom siv ua lub luag haujlwm tseem ceeb ib yam. Cov yas ABS txheem yuav lwj thaum raug ultraviolet (UV) ntev, ua rau tawg thiab puas tsuaj hauv ob mus rau peb xyoos. Rau lub neej ntev, cov ntaub thaiv yuav tsum siv UV-stabilized polycarbonate, fiberglass-reinforced plastics (FRP), lossis hmoov-coated txhuas. Hauv ntug dej hiav txwv lossis chaw ua haujlwm hnyav, kev tiv thaiv xeb yog qhov tseem ceeb; cov brackets mounting thiab kho vajtse yuav tsum tau ua los ntawm 316L marine-grade stainless hlau, muaj peev xwm dhau ASTM B117 ntsev tsuag sim tsawg kawg 500 teev yam tsis muaj xeb liab.
Npaj 70V lossis 100V cov kab ke thiab chav rau lub amplifier
Kev siv 70V lossis 100V cov kab ke faib tawm yuav tsum tau npaj hluav taws xob kom zoo kom suav nrog cov yam ntxwv ib puag ncig xws li qhov kub thiab txias hloov pauv, uas hloov pauv qhov tsis kam ntawm cov cable thiab cov khoom thauj. Ib qho yuam kev tseem ceeb hauv kev tsim qauv yog ua tsis tau suav nrog qhov chaw ntim khoom txaus los daws cov kev hloov pauv no thiab qhov tsis ua haujlwm ntawm cov hloov pauv qis. Cov kev coj ua zoo tshaj plaws hauv kev lag luam yuam kom muaj qhov chaw ntim khoom tsawg kawg 20%. Yog tias lub voj voog muaj nees nkaum lub tshuab hais lus sab nraum zoov uas tau nias ntawm 30W txhua lub, tag nrho cov khoom thauj yog 600W; lub tshuab hais lus sib xws yuav tsum tau ntsuas rau tsawg kawg 720W kom tiv thaiv kev txiav, kev cuam tshuam, thiab kev kub dhau thaum lub sijhawm siab tshaj plaws ntawm cov suab nrov. Ntxiv mus, cov xov hlau sab nraum zoov ntev ua rau muaj kev poob qis ntau, xav tau cov xov hlau hnyav dua - xws li 12 AWG lossis 14 AWG - kom ntseeg tau tias qhov hluav taws xob xav tau ncav cuag lub tshuab hais lus deb tshaj plaws ntawm qhov chaw.
Tshuaj xyuas cov kev txwv suab nrov, cov cai teeb tsa, thiab cov qauv kev nyab xeeb
Kev ua raws li ib puag ncig tsis yog tsuas yog tus neeg hais lus lub neej xwb, tab sis kuj suav nrog nws qhov cuam tshuam rau thaj chaw ib puag ncig. Cov chaw ua haujlwm hauv kev lag luam yuav tsum ua raws li cov cai tswjfwm kev nyab xeeb hauv kev ua haujlwm, xws li OSHA tus qauv 1910.95, uas tswj hwm qhov siab tshaj plaws ntawm kev raug suab nrov hauv chaw ua haujlwm. Txawm li cas los xij, cov cim ceeb toom yuav tsum tseem nkag mus rau hauv lub suab nrov ntawm cov tshuab hauv ib puag ncig kom ua haujlwm tau zoo. Ntawm qhov tod tes, cov cai suab nrov hauv nroog feem ntau txwv tsis pub muaj suab nrov ntawm cov kab hauv av, feem ntau txwv cov pa phem ntawm 60 txog 65 dBA thaum nruab hnub thiab qis dua thaum hmo ntuj. Kev sib npaug ntawm cov kev cai tsis sib haum xeeb no yuav tsum muaj cov ces kaum teeb tsa meej, kev suav cov kev taw qhia nqes mus rau hauv qab, thiab kev siv ntau lub tshuab hais lus qis dua uas faib sib npaug thoob plaws ib qho chaw, es tsis txhob cia siab rau ib lub suab nrov siab uas ua txhaum cov kev txwv suab nrov.
Kev Ntsuam Xyuas Tus Neeg Muab Khoom thiab Tag Nrho Cov Nqi
Kev ntsuam xyuas lub tshuab hais lus sab nraum zoov yuav tsum nthuav dav tshaj qhov ntawv qhia txog kev siv tshuab kom suav nrog cov peev xwm tsim khoom ntawm tus neeg muag khoom thiab tag nrho cov nqi ntawm kev muaj (TCO). Kev tsom mus rau tus nqi pib xwb yog lub tswv yim yuav khoom luv luv uas ib txwm ua rau cov nqi ua haujlwm ntev nce ntxiv los ntawm kev hloov pauv ntau zaus thiab kev txhawb nqa tsis zoo ntawm tus neeg muag khoom.
Nug cov lus nug txog kev nrhiav khoom uas qhia txog qhov zoo ntawm kev tsim kho
Kev ntsuam xyuas qhov zoo ntawm kev tsim kho yuav tsum nug cov lus nug txog kev nrhiav khoom uas nkag mus dhau cov ntaub ntawv lag luam ntawm cov chaw tsim khoom. Cov neeg yuav khoom yuav tsum nug txog cov ntaub ntawv tshwj xeeb siv rau hauv lub rooj sib dhos sab hauv. Piv txwv li, cov kauj suab uas qhwv rau ntawm Kapton lossis fiberglass formers tiv taus qhov kub ua haujlwm siab dua li cov qauv txhuas formers, txo qhov kev pheej hmoo ntawm kev ua tsis tiav thermal nyob rau hauv kev thauj khoom tas mus li, ntim ntau. Ib yam li ntawd, kev xaiv ntawm neodymium thiab ferrite magnets cuam tshuam rau qhov hnyav-rau-qhov tso zis piv ntawm tus neeg hais lus, qhov nyuaj ntawm kev teeb tsa, thiab kev khaws cia magnetic ntev hauv qhov kub heev. Cov pab pawg yuav khoom kuj tseem yuav tsum thov cov ntaub ntawv empirical ntawm cov txheej txheem xeem kawg ntawm cov chaw tsim khoom thiab cov nqi puas tsuaj keeb kwm; OEM uas muaj npe nrov yuav tsum qhia txog qhov nqi puas tsuaj uas tuaj yeem txheeb xyuas tau tsawg dua 0.5% thoob plaws nws cov khoom siv suab sab nraum zoov, txhawb nqa los ntawm kev ua haujlwm zoo.kev tswj xyuas zoocov ntaub ntawv pov thawj.
Piv cov sijhawm ua khoom siv, cov khoom seem, cov ntim khoom, thiab cov ntawv pov thawj
Kev txhawb nqa kev xa khoom thiab kev txhawb nqa tom qab kev teeb tsa muaj feem cuam tshuam loj heev rau TCO ntawm txhua qhov kev xa khoom loj. Thaum nrhiav cov khoom ntau rau hauv tsev kawm ntawv lossis cov haujlwm hauv nroog, cov neeg yuav khoom yuav tsum soj ntsuam qhov tsawg kawg nkaus ntawm kev txiav txim siab (MOQ) ntawm tus neeg muab khoom, uas feem ntau yog txij li 50 txog 200 units rau kev tsim khoom tshwj xeeb lossis kev sib phim xim tshwj xeeb. Lub sijhawm ua khoom tseem ceeb ib yam, vim tias kev ncua sijhawm hauv kev xa khoom tuaj yeem ua rau tag nrho cov haujlwm tsim kho vaj tse thiab ncua sijhawm ua haujlwm ntawm chaw. Ntxiv mus, cov neeg yuav khoom yuav tsum xyuas kom meej tias muaj cov khoom seem modular, tshwj xeeb tshaj yog cov diaphragms tsav tsheb hloov. Lub tso suab tsim los rau kev kho hauv thaj chaw ua haujlwm ntev lub neej ntawm cov khoom thiab tsis xav tau kev hloov pauv tag nrho. Thaum kawg, kev txheeb xyuas cov ntawv pov thawj thoob ntiaj teb - xws li CE, RoHS, thiab UL - ua kom cov khoom ua tau raws li cov lus qhia tseem ceeb thiab cov lus qhia ib puag ncig, txo cov kev pheej hmoo raws li txoj cai thiab kev ua raws li txoj cai rau tus neeg koom ua ke thiab tus neeg siv kawg.
Kev Xaiv Ua Haujlwm
Yuav kom tsis txhob muaj teeb meem ntawm kev yuav khoom tsis tu ncua, cov neeg koom ua ke thiab cov kws pab tswv yim txog suab yuav tsum tau txais kev ua haujlwm uas muaj cov qauv thiab muaj txheej txheem rau kev xaiv cov neeg hais lus sab nraum zoov. Txoj kev qhia no ua kom ntseeg tau tias txhua yam kev hloov pauv ntawm suab, ib puag ncig, thiab nyiaj txiag raug ntsuas kom raug, ua rau muaj kev xa tawm uas ua tau raws li qhov yuav tsum tau ua haujlwm yam tsis muaj kev siv nyiaj tsis tsim nyog.
Ua raws li cov kauj ruam ib kauj ruam zuj zus ntawm kev tshuaj xyuas qhov chaw thiab cov txheej txheem kev qhia tshwj xeeb
Cov txheej txheem pib nrog kev tshawb nrhiav qhov chaw dav dav, txav mus dhau cov phiaj xwm hauv pem teb yooj yim kom suav nrog cov ntaub ntawv topographical, cov teeb meem architectural, thiab empirical ambient noise mapping. Cov engineers yuav tsum siv cov software simulation acoustic, xws li EASE (Enhanced Acoustic Simulator for Engineers), los ua qauv rau cov qauv dispersion ntawm ntau lub horn speakers hauv 3D ib puag ncig tshwj xeeb. Cov txheej txheem ib kauj ruam zuj zus no suav nrog kev nkag mus rau cov coordinates meej, aiming angles, thiab SPL cov ntaub ntawv ntawm cov neeg hais lus uas tau thov los tsim cov ntawv qhia kub ntawm acoustic. Los ntawm kev sim ib puag ncig ua ntej kev yuav khoom, cov neeg tsim qauv tuaj yeem txheeb xyuas cov duab ntxoov ntxoo acoustic tom qab cov qauv thiab xyuas kom meej tias lub hom phiaj Speech Transmission Index (STI) ntawm >0.5 tau ua tiav thoob plaws txhua thaj chaw mloog, tshem tawm kev kwv yees los ntawm cov txheej txheem specification.
Siv cov txheej txheem txiav txim siab los sib piv cov kev xaiv ntawm cov neeg hais lus
Thaum cov qauv muaj peev xwm raug txheeb xyuas los ntawm kev sim ua qauv, daim ntawv txiav txim siab hnyav muab lub moj khaum rau kev xaiv zaum kawg. Cov cuab yeej no ua kom cov yam ntxwv sib tw zoo li qub thiab sib phim nrog cov phiaj xwm tshwj xeeb, tiv thaiv kev ntxub ntxaug rau ib qho kev qhia tshwj xeeb zoo li lub zog siab tshaj plaws lossis kev teb qeeb qeeb.
| Cov Qauv Ntsuas | Kev Ntsuas Qhov Hnyav (Dav Dav) | Qhov Qhab Nia Tseem Ceeb ntawm Kev Nyeem Ntawv | Qhov Ntsuas Ua Ntej ntawm Lub Suab Ceeb Toom | Qhov Ntsuas Tseem Ceeb ntawm Suab Paj Nruag |
|---|---|---|---|---|
| Cov zis suab (Rhiab heev/SPL) | 30% | Siab | Tseem ceeb heev | Nruab nrab |
| Kev Teb Zaus & Kev Ncaj Ncees | 20% | Qis | Nruab nrab | Tseem ceeb heev |
| Kev Ruaj Ntseg Ib puag ncig (IP / UV) | 25% | Siab | Siab | Siab |
| Cov Ntawv Pov Thawj (piv txwv li, EN 54-24) | 15% | Qis | Tseem ceeb heev | Qis |
| Tag Nrho Tus Nqi ntawm Kev Muaj Tswv | 10% | Nruab nrab | Qis | Nruab nrab |
Los ntawm kev muab cov qhab nia (piv txwv li, ntawm qhov ntsuas ntawm 1 txog 5) rau txhua tus qauv hais lus raws li cov qauv no, cov pab pawg yuav khoom tuaj yeem tsim cov qeb duas uas ntsuas tau uas ua pov thawj qhov kev txiav txim siab zaum kawg rau cov neeg koom nrog thiab cov neeg tswj hwm nyiaj txiag.
Txiav txim siab thaum twg yuav tsum muab qhov tseem ceeb rau tus nqi, kev ruaj khov, lossis kev ua tau zoo
Kauj ruam kawg hauv cov txheej txheem ua haujlwm yog txiav txim siab thaum twg yuav tsum tau hloov pauv thiab thaum twg yuav tsum tau muab qhov tseem ceeb rau cov yam ntxwv tshwj xeeb raws li lub neej ntawm qhov project. Hauv kev teeb tsa ib ntus lossis cov haujlwm uas muaj nyiaj tsawg heev, kev txo qis Kev Siv Nyiaj Txiag (Capex) yuav tsum tau xaiv cov tshuab raj ABS txheem nrog lub voj voog hloov pauv 3-txog-5-xyoo. Txawm li cas los xij, rau cov khoom siv tseem ceeb, cov nroj tsuag kev lag luam, lossis cov chaw thauj mus los, kev muab qhov tseem ceeb rau kev ruaj khov thiab kev ua tau zoo tsis yog qhov sib tham. Hauv cov chaw no, kev nqis peev rau cov neeg hais lus zoo, qib marine nrog cov ntsuas kev nkag siab siab heev txo cov Kev Siv Nyiaj Txiag Ua Haujlwm (Opex) los ntawm kev txo qis kev kho, kev kho thaum muaj xwm txheej ceev, thiab kev pheej hmoo ntawm kev lav phib xaub. Kev lees paub tias lub network hais lus sab nraum zoov feem ntau yog kev nqis peev hauv kev tsim kho vaj tse 10-txog-15 xyoo es tsis yog cov khoom siv pov tseg yog qhov kev tiv thaiv kawg tiv thaiv kev ua yuam kev xaiv kim.
Cov Ntsiab Lus Tseem Ceeb
- Txhais seb lub tshuab hais lus horn puas yog rau kev teeb tsa suab ib txwm muaj, suab keeb kwm yav dhau los, lossis lub tswb ceeb toom thaum muaj xwm txheej ceev ua ntej piv cov qauv lossis daim ntawv pov thawj.
- Tsis txhob cia siab rau lub zog fais fab xwb; muab qhov tseem ceeb rau qhov rhiab heev, qhov siab tshaj plaws SPL, impedance, dispersion, frequency response, thiab kev tiv thaiv ib puag ncig.
- Xam SPL ntawm qhov deb ntawm tus mloog tiag tiag vim tias qib suab sab nraum zoov feem ntau poob qis 6 dB txhua lub sijhawm qhov deb ob npaug.
- Tsim kom yooj yim rau kev hais lus los ntawm kev ua kom lub suab xa tawm feem ntau yog 10 txog 15 dB siab dua qhov suab nrov hauv pem teb.
- Xaiv cov khoom siv uas tiv taus huab cua, tiv taus xeb, lossis tiv taus tawg thaum lub chaw teeb tsa raug nag, plua plav, ntsev, kub heev, lossis cov pa phem.
- Siv ntau lub tshuab hais lus uas tau teeb tsa kom raug thaum xav tau es tsis txhob yuam kom ib lub tshuab hais lus loj loj npog tag nrho thaj chaw sab nraum zoov.
Cov Lus Nug Feem Ntau
Qhov yuam kev feem ntau thaum xaiv lub tshuab hais lus sab nraum zoov yog dab tsi?
Qhov yuam kev feem ntau yog xaiv los ntawm wattage xwb. Qhov rhiab heev, SPL ntawm qhov deb ntawm tus mloog, lub kaum sab xis npog, suab nrov ib puag ncig, qib huab cua, thiab daim ntawv pov thawj xav tau tseem ceeb dua rau kev nkag siab tiag tiag thiab kev ruaj khov.
Lub tshuab raj sab nraum zoov yuav tsum nrov npaum li cas kom hais lus meej?
Rau cov lus ceeb toom lossis cov lus ceeb toom thaum muaj xwm txheej ceev uas nkag siab tau, lub suab tso tawm ntawm lub pob ntseg ntawm tus mloog feem ntau yuav tsum yog 10 txog 15 dB siab dua qib suab nrov ib puag ncig. Ib lub vaj lag luam 85 dBA yuav xav tau tsawg kawg 95 dBA ntawm qhov chaw mloog.
Vim li cas qhov deb ntawm lub hais lus thiaj li tseem ceeb hauv kev tsim PA sab nraum zoov?
Nyob rau hauv cov xwm txheej sab nraum zoov uas tsis muaj kev cuam tshuam, SPL poob txog li 6 dB txhua zaus qhov deb ntawm tus mloog nce ob npaug. Lub suab raj uas ntsuas ntawm 110 dB ntawm 1 'meter' yuav xa tau kwv yees li 86 dB ntawm 16 'meter', ua ntej yuav xav txog cua, teeb meem, lossis teeb meem kev teeb tsa.
Cov tshuab raj sab nraum zoov puas tsim nyog rau cov chaw ua lag luam muaj kev phom sij?
Lawv tuaj yeem ua tau, tab sis tsuas yog tias tau teev tseg rau ib puag ncig. Cov chaw xws li roj thiab roj av, kev khawb av, kev caij nkoj, lossis cov chaw ua tshuaj lom neeg yuav xav tau cov khoom siv sib txuas lus uas ruaj khov, tiv taus huab cua, lossis tiv taus tawg nrog cov ntawv pov thawj xws li ATEX, CE, lossis FCC.
Kuv yuav tsum muab cov lus qhia twg piv rau qhov ntsuas hluav taws xob?
Piv txwv qhov rhiab heev, qhov siab tshaj plaws SPL, impedance lossis transformer taps, zaus teb rau kev hais lus, lub kaum sab xis dispersion, IP/kev tiv thaiv huab cua, kev tiv thaiv corrosion, kub ua haujlwm, kho vajtse mounting, thiab kev ua raws li txhua tus qauv PA lossis kev nyab xeeb ntawm lub neej.
Lub sijhawm tshaj tawm: Lub Rau Hli-20-2026