Indlela yokukhetha i-amplifier yamandla

Kungakhathaliseki ukuthi hlobo luni lomculo kanye nobukhulu bendawo, izikhulisa-zwi nezikhulisamandla zithatha umsebenzi onzima wokuguqula izimpawu zikagesi zibe amaza omsindo. Abaningi indima enzima inikezwe i-amplifier: isignali ephumayo engenamandla ethathwe kumathuluzi, imibhobho kanye neminye imithombo kufanele ikhuliswe ifike ezingeni namandla adingekayo ekusebenzeni okujwayelekile kwama-acoustics. Kulesi sibuyekezo, ochwepheshe besitolo "Umfundi" bazosiza ukwenza lula umsebenzi wokukhetha i-amplifier.

Imingcele ebalulekile

Ake sibheke imingcele yezobuchwepheshe lapho ukukhetha okulungile kuncike khona.

Mangakhi amawathi?

Abaningi ipharamitha ebalulekile ye- iamplifier amandla ayo okukhipha. Iyunithi ejwayelekile yokulinganisa amandla kagesi ngu watt . Amandla okukhipha ama-amplifiers angahluka kakhulu. Ukuze unqume ukuthi i-amplifier inamandla anele esistimu yakho yomsindo, kubalulekile ukuqonda ukuthi abakhiqizi bakala amandla ngezindlela ezahlukene. Kunezinhlobo ezimbili eziyinhloko zamandla:

• Amandla aphezulu - Amandla we-amplifier, afinyelelwe ezingeni eliphezulu lesignali elingenzeka (eliphakeme). Amanani aphezulu amandla ngokuvamile awafaneleki ukuhlolwa okungokoqobo futhi amenyezelwa umkhiqizi ngezinjongo zokuphromotha.
• Eqhubekayo noma I-RMS amandla amandla esikhulisi lapho i-coefficient yokuhlanekezela okungahambisani nomugqa incane futhi ingeqi inani elishiwo. Ngamanye amazwi, lawa amandla ajwayelekile kumthwalo ongashintshi, osebenzayo, okaliwe, lapho i-AU ingasebenza khona isikhathi eside. Leli nani libonisa ngokunembile amandla okusebenza alinganisiwe. Uma uqhathanisa amandla ama-amplifiers ahlukene, qiniseka ukuthi uqhathanisa inani elifanayo ukuze, ngomqondo ongokomfanekiso, ungaqhathanisi amawolintshi nama-apula. Kwesinye isikhathi abakhiqizi abacacisi kahle ukuthi yimaphi amandla aboniswa ezintweni zokuphromotha. Ezimweni ezinjalo, iqiniso kufanele lifunwe kubhukwana lomsebenzisi noma kuwebhusayithi yomkhiqizi.
• Enye ipharamitha yi- amandla avumelekile. Ngokuphathelene nezinhlelo ze-acoustic, kubonisa ukumelana kwezikhulumi ku-thermal kanye imishini umonakalo ngesikhathi sokusebenza isikhathi eside ngesignali yomsindo efana ” umsindo ophinki ". Ekuhloleni izici zamandla zama-amplifiers, nokho, i-RMS amandla asasebenza njengevelu enenjongo kakhudlwana .
  Amandla we-amplifier ancike ku-impedance (ukumelana) kwezikhulumi ezixhunywe kuyo. Isibonelo, i-amplifier ikhipha amandla angu-1100 W lapho izikhulumi ezinokumelana kwe-8 ohms zixhunyiwe, futhi lapho izikhulumi ezinokumelana kwe-4 ohms zixhunyiwe, kakade ziyi-1800 W , okungukuthi, ama-acoustics nge ukumelana 4 ohms ilayisha amplifier ngaphezuama-acoustics nge ukumelana 8 ohms.
  Lapho ubala amandla adingekayo, cabangela indawo yegumbi kanye nohlobo lomculo odlalwayo. Kuyacaca ukuthi a Folk I-duet yesiginci idinga amandla amancane kakhulu ukukhiqiza umsindo kunebhendi edlala insimbi yokufa enonya. Ukubala kwamandla kuhlanganisa okuguquguqukayo okuningi njengegumbi ama-acoustics , inani lezibukeli, uhlobo lwendawo (evulekile noma evaliwe) nezinye izici eziningi. Cishe, kubukeka kanjena (kusho amanani esikwele amandla anikeziwe):
  - 25-250 W - Folk ukusebenza ekamelweni elincane (njengesitolo sekhofi) noma ekhaya;
  - 250-750 W - ukwenza umculo we-pop ezindaweni ezisezingeni eliphakathi (jazz ihholo leklabhu noma yaseshashalazini);
  - 1000-3000 W - ukusebenza komculo we-rock ezindaweni ezimaphakathi (ihholo lekhonsathi noma ifestiveli esiteji esincane esivulekile);
  - 4000-15000 W - ukusebenza komculo we-rock noma "insimbi" ezindaweni ezinkulu (inkundla ye-rock, inkundla).

Izindlela zokusebenza ze-amplifier

Lapho uhlola izici zamamodeli ahlukahlukene we-amplifier, uzobona ukuthi kwabaningi babo amandla aboniswa ngesiteshi ngasinye. Kuye ngesimo, iziteshi zingaxhunywa ngezindlela ezahlukene.
Kumodi ye-stereo, i imithombo emibili yokuphuma (okukhiphayo kwesokunxele nakwesokudla kufayela le mixer ) axhunywe ku-amplifier ngesiteshi esihlukile ngasinye. Iziteshi zixhunywe kuzipikha ngoxhumano oluphumayo, okudala umphumela we-stereo - umbono wesikhala somsindo ovulekile.
Kumodi efanayo, umthombo owodwa wokufaka uxhumeke kuzo zombili iziteshi zeamplifier. Kulokhu, amandla we-amplifier asakazwa ngokulinganayo phezu kwezikhulumi.
Kumodi yebhuloho, i Isikhulisi se-stereo siba i-mono amplifier enamandla kakhulu. Ku imodi yebhuloho»Kusebenza isiteshi esisodwa kuphela, amandla aso aphindwe kabili.

Izicaciso ze-amplifier ngokuvamile ziklelisa amandla okukhiphayo kuzo zombili izindlela ze-stereo namabhuloho. Uma usebenza kumodi ye-mono-bridge, landela imanuwali yomsebenzisi ukuze uvimbele ukulimala kweamplifier.

Iziteshi

Uma ubheka ukuthi zingaki iziteshi ozidingayo, into yokuqala okufanele uyicabangele zingaki izikhulumi ufuna ukuxhuma ku-amplifier nokuthi kanjani. Ama-amplifiers amaningi aneziteshi ezimbili futhi angashayela izipikha ezimbili ngesitiriyo noma nge-mono. Kunamamodeli aneziteshi ezine, kanti kwezinye iziteshi zingafika kweziyisishiyagalombili.

I-amplifier eneziteshi ezimbili i-CROWN XLS 2000

Amamodeli eziteshi eziningi, phakathi kwezinye izinto, akuvumela ukuthi uxhume izikhulumi ezengeziwe ku-amplifier eyodwa. Kodwa-ke, ama-amplifiers anjalo, njengomthetho, ayabiza kakhulu kunezivamile zamashaneli amabili anamandla afanayo, ngenxa yomklamo nenjongo eyinkimbinkimbi.

Isikhulisi seziteshi ezine BEHRINGER iNUKE NU4-6000

Isikhulisi se-Class D

Ama-amplifiers ahlukaniswa ngendlela asebenza ngayo nesiginali yokufaka kanye nomgomo wokwakha izigaba zokukhulisa amandla. Uzohlangana namakilasi afana no-A, B, AB, C, D, njll.

Izizukulwane zakamuva zamasistimu omsindo aphathwayo afakwe ikakhulukazi ama-amplifiers ekilasi D , enamandla okukhipha aphezulu anesisindo esiphansi nobukhulu. Ekusebenzeni, zilula futhi zithembekile ngaphezu kwazo zonke ezinye izinhlobo.

I/O izinhlobo

Okufakwayo

Iningi ama-amplifiers ajwayelekile afakwe okungenani I-XLR ( Imakrofoni ) izixhumi, kodwa ezikhathini eziningi kuba khona ¼ intshi, TRS futhi ngezinye izikhathi izixhumi RSA ngaphezu kwazo. Isibonelo, i-Crown's XLS2500 ino-¼-intshi, i-TRS, kanye Izixhumi ze-XLR .

Qaphela ukuthi a olinganiselayo I-XLR uxhumano lusetshenziswa kangcono uma ikhebula lide. Kumasistimu ka-DJ, amasistimu omsindo wasekhaya, namanye amasistimu omsindo abukhoma lapho izintambo zifushane, kulula ukusebenzisa izixhumi ze-coaxial RCA.

Imiphumela

Okulandelayo yizinhlobo ezinhlanu eziyinhloko zokuxhuma okukhiphayo ezisetshenziswa kuma-amplifiers:

1. Khipha “amatheminali” - njengomthetho, ezinhlelweni zomsindo ezizukulwaneni ezedlule, iziphetho ezingenalutho zezintambo zesipika zisontekile eduze kwe-clamp yesikulufu. Lokhu ukuxhumana okuqinile nokuthembekile, kodwa kuthatha isikhathi ukukulungisa. Futhi, akulula kubaculi bekhonsathi abavame ukukhweza / ukudiliza imishini yomsindo.

Isikulufa itheminali

2. Ijeke likaBhanana - isixhumi esincane sowesifazane oyi-cylindrical; esetshenziswa ukuxhuma izintambo ngamapulaki (izixhumi zokuxhuma) zohlobo olufanayo. Kwesinye isikhathi ihlanganisa ama-conductor okukhiphayo okuhle nokubi.

3. Izixhumi ze-speakon – ithuthukiswe ngabakwaNeutrik. Idizayinelwe imisinga ephezulu, ingaqukatha abathintwayo abangu-2, 4 noma abangu-8. Kuzipikha ezingenawo amapulaki afanelekile, kukhona ama-adaptha e-Speakon.

Izixhumi ze-Speakon

4. I-XLR - Izixhumi ezilinganiselayo ezinamaphini amathathu, sebenzisa uxhumano olulinganiselayo futhi ube nokuvikeleka komsindo okungcono. Kulula ukuxhuma futhi kuthembekile.

I-XLR izixhumanisi

5. ¼ intshi yesixhumi - uxhumano olulula noluthembekile, ikakhulukazi esimweni sabathengi abanamandla aphansi. Athembeke kancane uma kwenzeka abasebenzisi bamandla aphezulu.

I-DSP eyakhelwe ngaphakathi

Amanye amamodeli we-amplifier afakwe DSP (ukucubungula isignali yedijithali), okuguqula isignali yokufaka ye-analogi ibe ukusakaza kwedijithali ukuze kulawulwe futhi kucutshungulwe okwengeziwe. Nazi ezinye zazo DSP izici ezihlanganiswe kuma-amplifiers:

Ukulinganiselwa - ukukhawulela iziqongo zesiginali yokufaka ukuze uvimbele ukugcwala kweamplifier noma ukulimaza izipikha.

Ukuhlunga – Abanye DSP -ama-amplifiers ane-low-pass, high-pass, noma izihlungi ze-bandpass ukuze zithuthukise okuthile imvamisa kanye/noma uvimbele ukulimala kwemvamisa ephansi kakhulu (VLF) ku-amplifier.

crossover – ukuhlukaniswa kwesignali yokuphumayo ibe ngamabhendi amafrikhwensi ukuze kwakheke ifrikhwensi yokusebenza oyifunayo amabanga . (Ama-crossovers e-Passive crossover kuzipikha ezineziteshi eziningi ajwayele ukugqagqana uma usebenzisa i- DSP i-crossover ku-amplifier.)

Ukucindezela kuyindlela yokukhawulela i-dynamic ububanzi be isignali yomsindo ukuze uyikhulise noma uqede ukuhlanekezela.

Izibonelo ze-amplifier yamandla

BEHRINGER iNUKE NU3000	I-Alto MAC 2.2
YAMAHA P2500S	Umqhele XTi4002