Ib qho ntawm cov ntsiab lus tsis meej pem hauv tsev-suab tsim yog nrhiav seb qhov loj npaum li cas koj cov neeg hais lus xav tau. Feem ntau, tib neeg ua qhov kev txiav txim siab raws li qhov yooj yim thiab qee zaum tsis muaj ntsiab lus hais lus thiab amplifier tso zis specifications. Ntau tus nyiam ua raws li kev xav tsis zoo txog yuav ua li cas amps thiab hais lus ua haujlwm.
hais lus fais fab tuav Specs
Hais lus lub zog tuav cov lus qhia feem ntau tsis muaj qab hau. Feem ntau, koj tsuas pom qhov "qhov siab tshaj plaws" kev ntsuam xyuas uas tsis muaj lus piav qhia txog yuav ua li cas cov spec tau muab los. Puas yog qhov siab tshaj plaws txuas ntxiv? Qib nruab nrab? Peak theem? Thiab ntev npaum li cas nws txhawb nqa, thiab nrog hom khoom twg? Cov no kuj yog cov lus nug tseem ceeb.
Cov tub ceev xwm sib txawv tau tshaj tawm ntau yam, cov qauv tsis sib haum xeeb rau kev ntsuas lub zog ntawm tus neeg hais lus, luam tawm los ntawm Audio Engineering Society, Electronics Industries Association, thiab International Electrotechnical Commission. Tsis xav tias tus neeg nruab nrab feem ntau xaus tsis meej pem!
Ntawm qhov ntawd, feem ntau ntawm cov tuam txhab lag luam tsis ua raws li cov qauv no; lawv tsuas ua qhov kev kwv yees. Feem ntau, qhov kev txiav txim siab no yog nyob ntawm kev tuav lub zog ntawm lub subwoofer. (Lub zog tuav cov lus qhia tshwj xeeb ntawm cov neeg hais lus nyoos, xws li woofers thiab tweeters, yog cov qauv thiab muaj txiaj ntsig ntau dua li cov specs rau cov neeg hais lus tiav.) Qee zaum tus hais lus lub zog tuav spec yog raws li kev lag luam. Tej zaum koj yuav pom ib lub chaw tsim khoom muab tus neeg hais lus kim dua qhov kev ntsuas lub zog ntau dua piv rau tus neeg hais lus qis dua, txawm tias lawv ob leeg siv tib lub woofer.
Volume Settings vs. Amplifier Power
Nyob rau hauv feem ntau, lub 200-watt amp tso tawm raws nraim tib lub zog li 10-watt amp, vim hais tias feem ntau mloog tshwm sim nyob rau nruab nrab, qhov tsawg tshaj li 1 watt yog txaus lub hwj chim rau cov neeg hais lus. Nyob rau hauv ib tug muab hais lus load ntawm ib tug muab ntim qhov chaw, tag nrho cov amplifiers xa raws nraim tib lub zog ntawm lub hwj chim - tsuav yog lawv muaj peev xwm xa tau ntau lub hwj chim.
Yog li nws yog qhov teeb tsa ntim qhov tseem ceeb, tsis yog lub zog amplifier. Yog tias koj tsis tau crank koj lub cev mus rau theem uas qhov ntim tsis xis nyob, koj lub amp yuav tsis tso tawm ntau tshaj 10 lossis 20 watts. Yog li, koj tuaj yeem ruaj ntseg txuas 1,000-watt amplifier rau hauv me ntsis 2-nti hais lus. Tsuas yog tsis txhob tig lub ntim siab tshaj qhov tus neeg hais lus tuaj yeem ua tau.
yam koj yuav tsum tsis txhob ua yog ntsaws lub hwj chim amp-hais, 10- lossis 20-watt qauv-rau hauv tus neeg hais lus thiab tig lub suab nrov heev. Lub amp uas tsis muaj zog tuaj yeem clip (distort), thiab amplifier clipping yog feem ntau ua rau hais lus tsis ua haujlwm. Thaum koj lub amplifier clipping, nws yog tiag tiag outputting high-level DC voltage ncaj qha mus rau hauv tus hais lus, uas yuav hlawv tawm tus hais lus tsav tsheb lub suab coils yuav luag instantly.
Yuav ua li cas xam qhov luaj li cas Amp koj xav tau
Tsis meej pem raws li tag nrho qhov no yuav zoo li, nws yooj yim los xam seb qhov loj npaum li cas amp koj xav tau. Thiab qhov zoo tshaj plaws yog tias koj tuaj yeem ua qhov no hauv koj lub taub hau. Nws yuav tsis zoo tag nrho, vim hais tias koj yuav tau tso siab rau cov lus qhia tshwj xeeb los ntawm cov neeg hais lus thiab cov amplifiers, uas feem ntau tsis meej thiab qee zaum exaggerated. Tab sis nws yuav ua rau koj nyob ze txaus. Ntawm no yog yuav ua li cas:
- Tau qhov ntsuas qhov siab ntawm tus neeg hais lus, uas tau qhia hauv decibels (dB) ntawm 1 watt / 1 meter. Yog tias nws tau teev nyob rau hauv chav tsev lossis ib nrab ntawm qhov chaw spec, siv tus lej ntawd. Yog hais tias nws yog ib qho anechoic spec (zoo li cov uas pom hauv qee qhov kev ntsuas hais lus) ntxiv +3 dB. Tus lej koj muaj tam sim no yuav qhia koj txog qhov nrov npaum li cas tus neeg hais lus yuav ua si hauv koj lub rooj zaum mloog nrog lub teeb liab 1-watt.
- Qhov peb xav tau yog lub hwj chim yuav tsum tau ntaus yam tsawg kawg 102 dB, uas yog hais txog nrov li cov neeg feem coob puas xav txaus siab. Lub suab nrov npaum li cas? Puas tau nyob hauv ib qho yeeb yaj kiab nrov heev? Ib qho kev ntsuas ua yeeb yam kom raug khiav ntawm qib siv yuav muab rau koj txog 105 dB ib channel. Qhov ntawd yog nrov heev - nrov dua li cov neeg feem coob xav mloog - yog vim li cas cov yeeb yaj kiab tsis tshua ua yeeb yaj kiab ntawm qhov ntim siab. Yog li 102 dB ua rau lub hom phiaj zoo.
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Ntawm no yog qhov tseeb tseem ceeb uas koj yuav tsum paub: Kom tau txais qhov ntxiv +3 dB ntawm ntim, koj yuav tsum tau muab ob npaug rau lub zog amp. Yog li, yog tias koj muaj tus hais lus nrog qhov kev xav hauv chav tsev ntawm 88 dB ntawm 1 watt, ces 2 watts yuav tau txais koj 91 dB, 4 watts yuav tau koj 94 dB, thiab lwm yam. Tsuas suav los ntawm qhov ntawd: 8 watts tau txais koj 97 dB, 16 watts tau txais koj 100 dB, thiab 32 watts tau txais koj 103 dB.
Yog li qhov koj xav tau yog lub tshuab hluav taws xob muaj peev xwm xa 32 watts. Tau kawg, tsis muaj leej twg ua 32-watt amp, tab sis 40- lossis 50-watt receiver lossis amplifier yuav tsum ua kom zoo. Yog hais tias lub amp lossis receiver koj xav tso tawm, hais, 100 watts, tsis txhob txhawj txog nws. Nco ntsoov, ntawm qhov nruab nrab ntawm kev mloog nrog cov neeg hais lus, txhua lub amp tau tso tawm tsuas yog li 1 watt, txawm li cas los xij.
