Kwixesha langokuIinkqubo zomsindo,I-amplifiers ngokungathandabuzekiyo yenye yezona zinto zibaluleke kakhulu.Ayichaphazeli kuphela umgangatho wesandi, kodwa iphinda inqume ukusebenza ngokubanzi kunye namava omsebenzisi wenkqubo.Eli nqaku liza kuphonononga kwizinto ezingundoqo zeizikhulisa-mandlaukukunceda uqonde ukuba kutheni le miba ibaluleke kangaka.
1. Imveliso yamandla: Qhuba intliziyo yesigodlo
Omnye wemisebenzi ephambili yeamplifier kukubonelela ngamandla aneleyo okuqhuba isithethi.Imveliso yamandla imisela ukuba isixokelelwano somsindo singasigcina isandi esicacileyo nesingagqwethiweyo kwimiqulu eyahlukeneyo.Imveliso yamandla yeamplifier yamandla idla ngokubonakaliswa ngeewatts (W).Ukukhetha i-amplifier yamandla efanelekileyo kufuna ingqalelo kula manqaku alandelayo:
Amandla alinganisiweyo esithethi: Amandla esandisi-lizwi kufuneka angqinelane namandla amisiweyo esithethi.Amandla amancinane kakhulu anokubangela ukungonelanga kwevolumu kunye nokugqwetheka, ngelixa amandla amaninzi angonakalisa isithethi.
Ubungakanani begumbi kunye nokusingqongileyo kwe-acoustic: Kumagumbi amakhulu okanye kwiindawo ezinesandi esibi, ii-amplifiers eziphezulu ziyafuneka ukuze kuqinisekiswe ukugqunywa kwesandi esifanayo kunye nokucacileyo.
Uhlobo lomculo kunye nemikhwa yokumamela: Abasebenzisi abathanda ukumamela umculo woluhlu oluphezulu banokufuna i-amplifiers ephezulu ukugcina iinkcukacha kunye nokutshintsha komculo kwivolumu ephezulu.
2. Ukuphazamiseka: Umbulali ongabonakaliyo womgangatho wesandi
Ukugqwethwa sesinye sezibonakaliso ezibalulekileyo zokuvavanya umgangatho we-amplifiers yamandla.Ibhekisela kulo naluphi na utshintsho olungeyomfuneko kwisignali yegalelo ngexesha lenkqubo yokukhulisa.Kukho ubukhulu becala ezi ndidi zilandelayo zokugqwetheka:
Ukuphazamiseka kweHarmonic: Ukuphindaphinda okuphindaphindiweyo okwenziwe ngexesha lokukhulisa umqondiso.Oku kugqwetheka kunokwenza isandi singabi yendalo kwaye sichaphazele umgangatho wesandi.
I-inter-modulation distortion: i-frequency entsha eyenziwa xa iimpawu ze-frequencies ezahlukeneyo zixutywe kwi-amplifier, enokuthi ikhokelele kwiitoni ezingafunekiyo kwisignali yomsindo.
I-Trans-conductance distortion: Ubudlelwane obungenalo umgca phakathi kokuphuma kwe-amplifier yamandla kunye nesignali yegalelo, ngokuqhelekileyo kwenzeka ngexesha lokulayisha ngaphezulu.
Uyilo lweamplifier olugqwesileyo luya kunciphisa oku kugqwetha kwaye lubonelele ngomgangatho wesandi esicacileyo kunye nendalo.
3. Ukuphendula ngokuphindaphindiweyo: Ukubuyisela ububanzi kunye nobunzulu besandi
Ukuphendula ngokuphindaphindiweyo kubhekiselele kuluhlu lwamaza enokuthi i-amplifier yamandla ikhulise ngokufanelekileyo, idla ngokulinganiswa kwiHertz (Hz).I-amplifier efanelekileyo kufuneka ibonelele ngesandisi esigudileyo nesifanayo kuyo yonke i-audio spectrum (idla ngokusuka kuma-20Hz ukuya kuma-20kHz).Ibhalansi yokuphendula rhoqo ichaphazela ngokuthe ngqo isiphumo sokubuyiselwa kwesandi:
Ukuphendula okuphantsi: kuchaphazela ubunzulu kunye nefuthe le-bass.I-amplifiers ezinempendulo entle ephantsi-frequency inokubonelela ngeziphumo ezinamandla ze-bass.
Ukuphendula kwezandi: ikakhulu kuchaphazela ukusebenza kwamazwi kunye nezixhobo, kwaye yinxalenye ephambili yomgangatho wesandi.
Impendulo yefrikhwensi ephezulu: Ichaphazela ukucaca kunye nokusebenza kweenkcukacha zamanqaku aphezulu, kunye ne-amplifier yamandla enempendulo elungileyo yefrikhwensi ephezulu inokwenza isandi sicace ngakumbi kwaye sibe yinyani.
4. Ubungakanani bomqondiso kwingxolo (SNR): isiqinisekiso somgangatho ococekileyo wesandi
Isiginali ukuya kwiNgxowa-mali sisalathisi esilinganisa umlinganiselo phakathi komqondiso oluncedo kunye nengxolo kwisignali ephumayo yeamplifier yamandla, edla ngokubonakaliswa ngeedecibels (dB).Umlinganiselo ophezulu wesignali ukuya kwingxolo uthetha ukuba iamplifier yamandla ivelisa ingxolo encinci yangasemva xa ikhulisa umqondiso, iqinisekisa ukucoceka komgangatho wesandi.Ukukhetha i-amplifier yamandla ene-signal-to-noise ratio inokunciphisa ukuphazamiseka kokuva kunye nokubonelela ngamava okuphulaphula ngakumbi.
5. Uyilo lwesekethe ye-amplifiers yamandla: ilitye lembombo lokumisela ukusebenza
Uyilo lwangaphakathi lwesekethe ye-amplifier yamandla ichaphazela ngokuthe ngqo ukusebenza kwayo kunye nomgangatho wesandi.Kukho iidizayini ezininzi eziqhelekileyo zesekethe:
Iamplifier yeKlasi A: Ngowona mgangatho wesandi ubalaseleyo kodwa owona mgangatho uphantsi, ifanelekile kwiinkqubo zeaudio zokugqibela ezisukela elona nqanaba liphezulu lesandi.
I-amplifier yeKlasi B: Ukusebenza okuphezulu kodwa ukuphazamiseka okuphawulekayo, okuqhelekileyo kusetyenziswa phakathi ukuya kwiinkqubo zomsindo ezisezantsi.
I-amplifier yeKlasi ye-AB: Idibanisa iingenelo zombini iKlasi A kunye neKlasi B, kunye nokusebenza okuphezulu kunye nomgangatho wesandi esilungileyo, kwaye okwangoku luyilo oluqhelekileyo lwe-amplifier.
Iamplifier yeKlasi D: Ngowona mgangatho uphezulu kunye nobukhulu obuncinci, ilungele izixhobo eziphathwayo kunye neenkqubo zemidlalo yeqonga yanamhlanje.
Uyilo ngalunye lwesekethe luneenzuzo kunye nokungalunganga, kwaye ukukhetha uhlobo lweamplifier oluhambelana neemfuno zakho kubalulekile.
6. Imisebenzi kunye nokudityaniswa kwee-amplifiers zamandla: ukuhlangabezana neemfuno ezahlukeneyo
I-amplifiers yanamhlanje ayifuni kuphela umgangatho wesandi obalaseleyo, kodwa kufuneka ibonelele ngemisebenzi etyebileyo kunye nojongano lokuziqhelanisa neemeko ezahlukeneyo zokusetyenziswa.Umzekelo:
Iindlela zokungena ezininzi, ezifana ne-RCA, i-fiber optic, i-coaxial, i-HDMI, njl., yenza lula uxhulumaniso lwezixhobo ezahlukeneyo zomsindo.
Uqhagamshelo olungenazingcingo: njengeBluetooth kunye neWi-Fi, elungele ukudityaniswa nezixhobo eziphathwayo kunyeiinkqubo smart ekhaya.
Inkxaso yamatshaneli amaninzi: ifanelekileiinkqubo zethiyetha yasekhaya, ibonelela ngamava esandi esintywilayo.
Ukukhetha iamplifier egqwesileyo kufuna uqwalaselo olubanzi lwezinto ezinje ngemveliso yamandla, ukuphazamiseka, ukuphendula rhoqo, umlinganiselo wesignali ukuya kwingxolo, uyilo lwesekethe, ukusebenza kunye nojongano.Kuphela ngale ndlela sinokuthi siqinisekise ukusebenza kakuhle kunye namava omsebenzisi wenkqubo yomsindo.Nokuba ungumthandi womculo okanye umthandi wethiyetha yasekhaya, ukuqonda kunye nokunikela ingqalelo kwezi zinto zibalulekileyo kuya kukunceda ukhethe isixhobo sokukhulisa isandi esikufaneleyo, wenze onke amava okumamela abe luyolo.
Ixesha lokuposa: Jun-06-2024