Thaum lub sijhawm xaiv cov khoom, daim ntawv qhia tshwj xeeb (Datasheet) feem ntau yog lub hauv paus tseem ceeb rau kev txiav txim siab -. Txawm li cas los xij, txawm tias zoo li lub hom phiaj tsis zoo, kev nkag siab yuam kev nquag tshwm sim, ua rau muaj qhov sib txawv ntawm "kev ua tau zoo" thiab "kev mloog tiag tiag". Raws li tus neeg muab khoom tseem ceeb, Xuanda Electronics vam tias yuav ua raws li koj "tus kws txhais lus thev naus laus zis", txiav txim siab lub ntsiab lus tseeb tom qab cov ntsiab lus tseem ceeb thiab pab koj txiav txim siab zoo raws li cov khoom xav tau ntau dua li cov lej xwb.
Parameter 1: Hwj chim (Power Rating) - Tolerance ≠ Pom Zoo Volume
Kev xav tsis zoo: Kev ntseeg tias lub zog tau hais tseg (xws li 10W RMS) yog "tus qauv ntim" lossis "qib suab" ntawm tus neeg hais lus.
Technical Truth: Cov ntsuas hluav taws xob (lub zog ntsuas, lub zog siab tshaj plaws) feem ntau sawv cev rau cov thermal thiab mechanical kam rau siab txwv ntawm chav hais lus, tsis yog cov ntsuas kev ua haujlwm. Lawv qhia koj tias lub zog loj npaum li cas tuaj yeem xa tau yam tsis muaj kev puas tsuaj rau tus neeg hais lus.
Xuanda tus kws tshaj lij kev txhais lus: Rau AI neeg hlau lossis cov cuab yeej hauv tsev ntse, peb ua tib zoo mloog ntau dua rau qhov cuam tshuam thiab lub suab zoo ntawm cov neeg hais lus raws li lub zog ua haujlwm ntawm 1-3W. Peb yuav pom zoo kom cov neeg siv khoom sib piv cov khoom siv hluav taws xob nrog qee cov npoo (xws li xaiv tus hais lus nrog lub zog ntsuas ntawm 5W rau 2W amplifier) kom tsis txhob muaj kev cuam tshuam los yog tawg ntawm lub suab thaum lub sijhawm hloov pauv loj, thiab kom muaj kev ntseeg tau ntev.
Parameter 2: Frequency Response Curve (Frequency Response) - Range ≠ Zoo
Kev xav tsis zoo: Nws ntseeg tau tias qhov ntau zaus teb ntau dua (xws li 50Hz - 20kHz) yeej ib txwm zoo dua.
Technical tseeb: Ib qho yooj yim, tiaj tus nkhaus yog qhov tseem ceeb tshaj qhov ntau zaus ntau zaus. Qhov "± 3dB" uas tau hais hauv cov lus qhia tshwj xeeb yog qhov tseem ceeb tab sis feem ntau tsis saib xyuas ntxiv. Nws txhais tau hais tias nyob rau hauv qhov ntau zaus no, qhov hloov pauv ntawm lub suab tso tawm yog nyob rau hauv 3 decibels, uas ua rau muaj kev sib luag zoo mloog.
Xuanda tus kws tshaj lij kev txhais lus: Peb yuav muab peb cov neeg siv khoom nrog cov ntsuas ntsuas qhov ntsuas zaus. Piv txwv li, rau lub suab sib cuam tshuam cov cuab yeej, peb yuav xyuas kom meej tias cov tib neeg lub suab zaus band ntawm 300Hz mus rau 3.5kHz yog tiaj tus thiab tsis muaj qhov ua tau; rau multimedia audio systems, peb tsom mus rau qhov smoothness ntawm tag nrho cov nkhaus thiab cim qhov ua tau zoo tsawg - zaus qis qis (xws li -6dB point), tso cai rau cov neeg siv khoom kom muaj kev cia siab ntawm qhov kev mloog tiag tiag.
Parameter 3: Sensitivity (Sensitivity) - Tus Vaj Ntxwv ntawm Kev Ua Tau Zoo, Feem ntau Tsis Txaus Siab
Common Misconception: Thaum muab piv, nws qhov tseem ceeb yog qis dua lub zog thiab qhov loj me.
Technical Truth: rhiab heev (hauv units: dB / W / m) yog ib qho tseem ceeb tshaj plaws ntsuas rau kev ntsuas qhov ua tau zoo ntawm kev hloov hluav taws xob rau lub suab. Nws sawv cev rau qib suab siab tsim tawm ntawm qhov deb ntawm 1 meter thaum lub zog ntawm 1 watt siv. Rau txhua txhua 3 dB nce, lub hwj chim amplifier yuav tsum ua kom tiav tib lub ntim tuaj yeem raug halved.
Xuanda tus kws txhais lus: Rau lub roj teeb - siv cov khoom siv nqa tau yooj yim, lub siab rhiab heev (xws li > 86dB) yog tus yuam sij rau txuas lub roj teeb lub neej. Peb yuav qhia cov neeg siv khoom kom nyiam cov qauv siab -rhiab heev, uas txhais tau hais tias lub zog me me thiab ntau dua - siv tau lub zog amplifier ICs, ua tiav qhov system - theem kev siv hluav taws xob thiab kev ua kom zoo.
Parameter 4: Impedance (Resistance) - Kev sib tw yog qhov tseem ceeb; nws zoo tag nrho los yog tsis muaj dab tsi hlo li.
Kev xav tsis zoo: Nws ntseeg tau tias qhov siab dua qhov impedance (xws li . 8Ω vs 4Ω), lub suab zoo dua.
Technical tseeb: impedance yog hais txog AC tsis kam, thiab nws yuav tsum tau ua kom haum cov zis impedance ntawm lub hwj chim amplifier. Xaiv qhov tsis ncaj ncees lawm impedance yuav ua rau lub hwj chim amplifier tsis tuaj yeem tsav tus neeg hais lus tau zoo (tsis muaj lub zog xa hluav taws xob), lossis ua rau lub zog dhau thiab kub dhau.
Xuanda txoj kev txhais lus: Tus qauv fais fab amplifier circuits feem ntau yog optimized rau 4Ω lossis 8Ω loads. Peb yuav qhia meej meej rau cov neeg siv khoom ntawm qhov kev ua tau zoo sib txawv raws li qhov sib txawv impedances: 4Ω hais lus tuaj yeem tau txais lub zog ntau dua (thiab yog li suab nrov) nyob rau hauv tib qhov hluav taws xob, tab sis yuav tsum muaj peev xwm ntau dua tam sim no los ntawm lub tshuab hluav taws xob; 8Ω hais lus yooj yim rau kev tsav tsheb thiab lub kaw lus ruaj khov dua. Peb yuav muab cov lus qhia meej meej raws li tus neeg siv khoom lub tswv yim amplifier.
Xuantai Electronics 'Tus Nqi: Muab "Kev Ua Haujlwm Hauv Lub Hnab" Raws li Scenario
Peb nkag siab tias qhov tsis sib nrauj los ntawm daim ntawv thov scenarios tsis muaj qab hau. Yog li ntawd, dab tsi Xuantai Electronics muab tsis yog cov specifications xwb, tab sis theej "kev soj ntsuam lub hnab ntawv" raws li cov khoom lag luam. Peb ua haujlwm nrog cov neeg siv khoom los txheeb xyuas cov ntsiab lus tseem ceeb (xws li qhov tsawg kawg nkaus lub suab siab, qhov siab tshaj plaws distortion, lub hom phiaj zaus), thiab xyuas kom meej tias cov neeg hais lus pom zoo ua tiav hauv "lub hnab ntawv" raws li qhov tseeb voltage, txee, thiab teeb liab. Qhov no lav qhov kev vam meej ntawm cov khoom lag luam kev paub dhau los ntawm qhov pib.
Xaus: Nkag siab txog cov ntaub ntawv tshwj xeeb yog thawj kauj ruam ntawm kev zam cov nuj nqis. Xaiv Xuan Da Electronics txhais tau tias koj yuav muaj tus kws pab tswv yim acoustic uas tuaj yeem hloov pauv qhov tsis zoo rau hauv cov khoom lag luam sov, kom ntseeg tau tias txhua qhov kev txiav txim siab ua haujlwm tau zoo rau cov neeg siv khoom kawg.