Kuyeza kwa Amplifier ndi Zomwe Zikutanthauza - Gawo II
M'kope lachiwiri ili la Audio Lab poyerekeza mitundu yosiyanasiyana ya ma amplifiers, tikuwonetsa zinthu ziwiri zamasewera apanyumba? Yamaha RX-V5.1 473 amplifier (ma amplifiers asanu pa bolodi), mtengo PLN 1600, ndi 7.1 mawonekedwe amplifier (1020 amplifier mphamvu pa bolodi) Yamaha RX-A4900 (price PLN XNUMX). Kodi kusiyana kwamitengo ndi chifukwa chowonjezera malangizo awiri otsatirawa? mwamalingaliro, izi ndi zida za kalasi yosiyana kotheratu. Koma kodi kulingalira koteroko kudzatsimikiziridwa ndi magawo awo?
Zolandila za AV ndi pafupifupi zida zonse zokhazikika, nthawi zina ma IC, nthawi zina amapinidwa, omwe amagwira ntchito mukalasi D, ngakhale nthawi zambiri amakhala mgulu lachikhalidwe la AB.
Yamaha RX-V473 imawononga PLN 1600, yomwe ndi yoposa stereo ya Pioneer A-20 yomwe idayambitsidwa mwezi wapitawo. Zokwera mtengo komanso zabwinoko? Kutsiliza kotereku kungakhale kofulumira, osati chifukwa cha zodabwitsa zomwe zikutiyembekezera m'dziko la zipangizo zomvera; kupenda mlanduwo mwatsatanetsatane, palibe ngakhale maziko omveka a ziyembekezo zoterozo! Cholandila cha AV chamitundu yambiri, ngakhale chotsika mtengo, mwakutanthawuza chovuta kwambiri, chotsogola, komanso chimagwira ntchito zina zambiri. Lili ndi mabwalo ochulukirapo, kuphatikiza mapurosesa a digito, ma audio ndi makanema, ndipo alibe ma amplifiers awiri, monga amplifier stereo, koma osachepera asanu (zitsanzo zamtengo wapatali zimakhala ndi zisanu ndi ziwiri, kapena kuposa ...). Izi zikutsatira kuti bajetiyi iyenera kukhala yokwanira ku chiwerengero chokulirapo cha machitidwe ndi zigawo zake, kotero kuti makina asanu a PLN 1600 AV olandila mphamvu zolandirira siziyenera kukhala zabwino kuposa chimodzi mwa ziwirizi, zosavuta kwambiri za PLN 1150 stereo amplifiers. (motsatira mitengo yazitsanzo zathu).
Miyezo ya mphamvu yomwe idayezedwa nthawi ino ikutanthauza mikhalidwe yosiyana pang'ono ndi yomwe imawonetsedwa muyeso ya stereo amplifier. Choyamba, ndi olandila ambiri a AV, mwalingaliro, titha kulumikiza okamba ndi cholepheretsa cha 8 ohms. Kodi iyi ndi nkhani inanso? Zachiyani? Oyankhula ambiri lerolino ndi 4 ohms (ngakhale nthawi zambiri amalembedwa ngati 8 ohms m'makatalogu a kampani...) ndipo kuwalumikiza ku cholandirira AV chotere nthawi zambiri sikubweretsa zotsatira zoyipa, koma sikuloledwa? chifukwa chimatenthetsa chipangizocho mopitilira malire omwe amaloledwa ndi miyezo ya EU; Kotero pali mgwirizano wosaneneka kuti opanga olandila amalemba okha, ndipo opanga zokuzira mawu amalemba okha (4 ohms, koma amagulitsa ngati 8 ohms), ndipo ogula osadziwa amawaika ... ndipo nduna imasewera. Ngakhale nthawi zina zimatentha pang'ono, ndipo nthawi zina zimazimitsa (mabwalo otetezera samalola kuwonongeka kwa ma terminals chifukwa cha kuchuluka kwaposachedwa komwe kumadutsamo). Komabe, potsatira malingaliro a wopanga, ife ku Audio Lab sitiyesa mphamvu za olandila otere kukhala katundu wa 4-ohm, koma mongololedwa mwalamulo, 8-ohm katundu. Komabe, ndizotsimikizika kuti nthawi ino mphamvu pa 4 ohms sichidzawonjezeka kwambiri kapena ngakhale kwathunthu, monga momwe zilili ndi "zabwinobwino". stereo amplifier, monga mapangidwe a zokulitsa mphamvu za wolandila amakongoletsedwa kuti apereke mphamvu zonse ngakhale mu 8 ohms. Kodi mungafotokoze bwanji kuti kugwirizana kwa 4 ohm, ngakhale sikukuwonjezera mphamvu, kumawonjezera kutentha? Zosavuta kwambiri? ndi zokwanira kutembenukira ku sukulu physics mabuku ndi fufuzani mafomu mphamvu ... Ndi m'munsi impedance, mphamvu yomweyo analandira ndi m'munsi voteji ndi apamwamba panopa, ndipo panopa akuyenda mwa iwo amatsimikizira Kutentha kwa mabwalo amplifier.
Mudzapeza kupitiriza kwa nkhaniyi m’magazini ya January
Wolandila Stereo Yamaha RX-A1020
Wolandila sitiriyo Yamaha RX-V473
