Xam tawm Tus Nqi Cov Nyiaj Haum Rau Koj Lub Cev
Ib qho ntawm feem ntau cov ncauj lus hauv suab yog xam koj cov teeb meem loj li cas rau koj cov neeg tham. Feem ntau, cov neeg ua qhov txiav txim siab raws li tus neeg hais lus yooj yooj yim thiab tej yam tsis tseem ceeb thiab cov zis tawm cov lus qhia . Ntau tus yuav ua raws li kev tsis sib haum xeeb txog seb cov amps thiab cov neeg tham puas ua haujlwm. Peb tau siv xyoo ntsuas thiab ntsuas kev sib tham - ntxiv rau peb tau rov qab qab-cov-scenes insights los ntawm kev sib tham nrog cov neeg paub ntau txhiab tus neeg ua lag luam thiab kev lag luam nyob rau hauv lub lag luam suab - yog li ntawm no yog dab tsi koj yeej yuav tsum paub!
Qhov tseeb txog lub hwjchim tuav ntiag tug
Ua ntej, nws tseem ceeb heev kom nkag siab tias tus neeg hais lus muaj peev xwm ua tau cov lus qhia yog qhov tsis tseem ceeb. Feem ntau, koj tsuas pom ib qho "qhov siab tshaj plaws" uas tsis muaj kev tshab txhais txog ua li cas cov spec tau muab coj los ua. Nws puas yog theem siab tshaj plaws? Nruab nrab theem? Qib siab npaum li cas? Thiab ntev npaum li cas nws txhawb ntxiv, thiab nrog cov khoom siv zoo li cas? Cov no yog cov lus nug tseem ceeb.
Hmoov tsis, muaj cov qauv ntau ntau thiab tsis sib thooj rau kev ntsuas kev hais lus zog, luam tawm los ntawm Audio Engineering Society (AES), Electronics Industries Association (EIA) thiab International Electrotechnical Commission (IEC). Nws yog ib qho kev xav tias vim li cas tus neeg nruab nrab yuav xaus me ntsis tsis meej pem.
Nyob saum qhov ntawd, feem ntau ntawm cov neeg lag luam peb tau hais nrog tsis tau ua raws li cov qauv no; lawv tsuas ua kom muaj kev xam khwv. Feem ntau, qhov kev txiav txim siab no yog nyob ntawm lub hwj chim ntawm tus subwoofer. (Cov lus qhia txog kev siv hluav taws xob los ntawm cov neeg tsav tsheb, xws li woofers thiab tweeters, muaj ntau tus qauv thiab muaj txiaj ntsig tshaj li cov lus sib tham kom tiav.) Tej zaum tus neeg hais lus muaj peev xwm ua tau raws li kev lag luam. Koj tuaj yeem pom cov khw muag khoom kim tshaj rau tus neeg hais lus sib tham ntau dua tus nqi lus zog dua tus nqi lus luv nqi, tab txawm lawv siv tib lub woofer.
Volume Settings thiab Amplifier Fais fab
Nws tseem ceeb heev kom nkag siab hais tias nyob rau ntau lub sijhawm, 200-watt amp tso tawm raws nraim tib lub hwj chim li 10-watt amp. Qhov no yog vim hais tias feem ntau mloog tau tshwm sim hauv nruab nrab, qhov tsawg dua 1 watt muaj zog txaus rau cov neeg hais lus . Rau ib tus neeg hais lus ntsia rau ntawm qhov chaw muab lub ntim, txhua tus neeg ua haujlwm tau ua raws nraim tib lub zog ntawm lub hwj chim - tsuav yog lawv muaj peev xwm ua kom muaj peev xwm npaum li ntawd.
Yog li nws 's tiag tiag qhov ntim qhov teeb meem uas tseem ceeb, tsis yog lub hwj chim ntawm lub zog. Yog hais tias koj tsis tau crank pem koj lub zog mus rau theem uas lub ntim tsis xis nyob, koj tus amp tej zaum yeej tsis tau tso tawm ntau tshaj 10 los yog 20 watts. Yog li, koj tuaj yeem ruaj ntseg txuas ib tug 1,000-watt amplifier rau hauv 2-nti lus sib tham. Tsuas tsis tig qhov ntim tshaj qhov tus neeg hais lus yuav tau ua.
Qhov koj yuav tsum tsis txhob ua yog ntsaws qes-powered amp - hais, tus qauv 10- lossis 20-watt - ua tus neeg hais lus thiab tig qhov ntim kom nrov nrov. Qhov tsawg-amp amp yuav clip (distort), thiab amplifier clipping yog feem ntau ua rau cov lus tsis ua haujlwm. Thaum twg koj lub thais ntuag yog clipping, nws yog qhov outputting ib theem siab DC voltage ncaj nraim mus rau cov lus qhia. Qhov no yuav hlawv tawm cov lus tsav tsheb 'suab lus coils yuav luag tam sim ntawd!
Yuav Tsum Ua Li Cas Amp Size Koj Xav Tau
Kev xav tsis meej tias tag nrho cov no yuav zoo li, nws yooj yim los xam seb dab tsi me me amp koj xav tau. Thiab qhov zoo tshaj plaws yog qhov uas koj tuaj yeem ua qhov no rau hauv koj lub taub hau. Nws yuav tsis zoo tag nrho, vim hais tias koj yuav tsum cia siab rau cov lus qhia los ntawm tus neeg hais lus thiab cov amplifiers, uas feem ntau tsis meej thiab qee zaum ua rau kom siab dua. Tab sis nws yuav tau txais koj nyob ze txaus. Ntawm no yog yuav ua li cas:
- Siv qhov kev ntsuam xyuas cov lus piav qhia ntawm tus neeg hais lus , uas yog hais hauv decibels (dB) ntawm 1 watt / 1 meter. Yog tias nws tau teev nyob rau hauv chav nyob los yog ib nrab chaw spec, siv tus lej ntawd. Yog hais tias nws yog ib qho kev ua qauv (xws li cov uas pom hauv ib co kev ntsuam xyuas cov lus tseeb) ntxiv rau +3 dB. Tus naj npawb koj muaj tam sim no yuav qhia rau koj roughly npaum li cas tus neeg hais lus yuav ua rau hauv koj lub rooj sib tham nrog nrog 1-watt suab lus.
- Qhov peb xav tau yog qhov uas lub zog yuav tsum tau ntaus kom tsawg kawg yog 102 dB, uas yog li nrov nrov li neeg feem coob puas xav kom txaus siab. Lub suab nrov zoo li cas? Puas tau nyob hauv ib qho yeeb yaj kiab yeeb yam zoo nkauj heev? Ib qho chaw ua yeeb yaj kiab ua kom zoo raws qhov kev ntsuas yuav muab rau koj txog 105 dB ib channel. Tias 's nrov heev - ntau dua li cov neeg xav mloog - uas yog vim li cas cov kev ua yeeb yam tsis tshua zoo ua si hauv cov duab uas siab. Yog li 102 dB ua rau lub hom phiaj zoo.
- Nov yog qhov tseem ceeb uas koj xav paub txog; kom tau qhov ntxiv +3 dB ntawm ntim, koj yuav tsum tau muab ob npaug rau lub hwj huam amp. Yog li ntawd, yog tias koj muaj ib tus neeg hais lus nrog rau hauv ib chav nyob ntawm 88 dB ntawm 1 watt, ces 2 watts yuav tau txais koj 91 dB, 4 watts yuav tau txais koj 94 dB, thiab ntxiv rau. Tsuas suav los ntawm muaj: 8 watts tau txais koj 97 dB, 16 watts tau txais koj 100 dB, thiab 32 watts tau txais koj 103 dB.
Yog li dab tsi koj yuav tsum tau yog ib qho kev thev xaib ntawm xa 32 watts. Qhov tseeb, tsis muaj leej twg ua rau 32-watt amp, tab sis ib tug 40-los sis 50-watt receiver lossis amplifier yuav tsum ua zoo. Yog hais tias tus amp lossis receiver koj xav tau tawm, hais, 100 watts, tsis txhob txhawj txog nws. Nco ntsoov, thaum mloog cov qib nruab nrab nrog cov neeg hais lus, ib qho amp yog muab tawm li ntawm 1 watt, txhua yam.