Izilinganiso Zesikhulisi nokuthi Kusho Ukuthini - Ingxenye II

Kulolu hlelo lwesibili lokuqhathaniswa kwe-Audio Lab yezinhlobo ezahlukene zama-amplifiers, sethula imikhiqizo yetiyetha yasekhaya eneziteshi eziningi? I-Yamaha RX-V5.1 473 amplifier (izikhulisamandla ezinhlanu ebhodini), intengo PLN 1600, kanye nefomethi ye-7.1 amplifier (izikhulisamandla eziyisikhombisa ebhodini) Yamaha RX-A1020 (inani PLN 4900). Ingabe umehluko wentengo ngenxa nje yokwengezwa kwamathiphu amabili alandelayo? ngokwethiyori, lawa ngamadivaysi ekilasi elihluke ngokuphelele. Kodwa ingabe ukucabanga okunjalo kuzoqinisekiswa yimingcele yabo?

Izamukeli ze-AV cishe zingamadivayisi esimo esiqinile emhlabeni wonke, kwesinye isikhathi ama-IC, kwesinye isikhathi aphiniwe, asebenza ku-Class D, nakuba ngokuvamile ku-Class AB evamile.

I-Yamaha RX-V473 ibiza i-PLN 1600, engaphezu kwesistimu ye-stereo ye-Pioneer A-20 eyethulwe enyangeni edlule. Kubiza kakhulu futhi okungcono? Isiphetho esinjalo singafika ngaphambi kwesikhathi, hhayi nje ngenxa yezimanga ezisilindile emhlabeni wemishini yomsindo; ukuhlolisisa leli cala ngokuningiliziwe, asikho ngisho nesisekelo esinengqondo salokho okulindelekile! Isamukeli se-AV eneziteshi eziningi, ngisho neshibhile, ngokwencazelo siyinkimbinkimbi kakhulu, sithuthuke kakhulu, futhi senza imisebenzi eminingi eyengeziwe. Iqukethe ama-circuits amaningi, okuhlanganisa amaphrosesa edijithali, alalelwayo namavidiyo, futhi ayinazo izikhulisamandla ezimbili, njenge-stereo amplifier, kodwa okungenani ezinhlanu (amamodeli abiza kakhulu anesikhombisa, noma ngaphezulu ...). Lokhu kulandela ukuthi lesi sabelomali bekufanele ngabe sanele inani elikhulu kakhulu lamasistimu nezingxenye, ngakho-ke isikhulisamandla ngasinye kwezihlanu zesamukeli samandla se-PLN 1600 AV akudingeki sibe ngcono kunesodwa kokubili, esilula kakhulu i-PLN 1150 izikhulisamsindo zestereo. (kulandela amanani avela ezibonelweni zethu).

Izilinganiso zamandla ezilinganisiwe kulokhu zibhekisela ezimweni ezihluke kancane kunalezo eziphrezentwayo esilinganisweni sesikhulisi se-stereo. Okokuqala, ngezamukeli eziningi ze-AV, ngokombono, singaxhuma izipikha kuphela ngokuphazamiseka okungu-8 ohms. Ingabe lena inkinga ehlukile futhi? Okwani? Izikhulumi eziningi namuhla zingu-4 ohms (yize ezikhathini eziningi zikleliswe njengezingu-8 ohms kumakhathalogi enkampani...) futhi ukuzixhuma esamukeli esinjalo se-AV ngokuvamile akubangeli imiphumela emibi kakhulu, kodwa akuvunyelwe ngokusemthethweni? ngoba ishisa idivayisi ngaphezu komkhawulo ovunyelwe amazinga e-EU; Ngakho-ke kunesivumelwano esingashiwongo sokuthi abakhiqizi bezamukeli babhala ezabo, futhi abakhiqizi bezikhulisa-zwi babhala ezabo (ama-ohm ama-4, kodwa athengiswa ngo-8 ohms), futhi abathengi abangenalwazi bawanamathisele ... futhi ikhabhinethi iyadlala. Nakuba ngezinye izikhathi ithola ukufudumala kancane, futhi ngezinye izikhathi iyacisha (ama-circuits okuvikela awavumeli umonakalo kumatheminali ngokugeleza okuningi okugeleza kuwo). Kodwa-ke, ngokulandela izincomo zomkhiqizi, thina ku-Audio Lab asiwalinganisi amandla abamukeli abanjalo kumthwalo ongu-4-ohm, kodwa siwalinganisa ngokusemthethweni umthwalo ongu-8-ohm. Kodwa-ke, cishe kuqinisekile ukuthi ngalesi sikhathi amandla ku-4 ohms ngeke akhule ngokuphawulekayo noma ngisho ngokuphelele, njengoba kwenzeka "evamile". isikhulisi se-stereo, njengoba idizayini yezikhulisamandla zomamukeli ithuthukiswa ukuze ilethe amandla aphelele ngisho naku-8 ohms. Indlela yokuchaza iqiniso lokuthi uxhumano lwe-4 ohm, nakuba lungakhulisi amandla, luyakwandisa izinga lokushisa? Kulula kakhulu? kwanele ukuphendukela ezincwadini ze-physics zesikole futhi uhlole amafomula amandla ... Nge-impedance ephansi, amandla afanayo atholakala nge-voltage ephansi kanye ne-current ephakeme, futhi okwamanje okugeleza kuzo kunquma ukushisa kwama-circuits amplifier.

Uzothola ukuqhubeka kwalesi sihloko kumagazini ka-January 

Isamukeli se-Stereo Yamaha RX-A1020

Isamukeli se-Stereo Yamaha RX-V473