Ukuze cishe zonke izikhulumi noma iqoqo le-headphones ungathenga, uzothola incazelo ye-impedance elinganiselwe kuma-ohms (okufanekiselwa njenge-Ω). Kodwa ukufakwa kwamaphakheji noma okubandakanya iziqondiso zomkhiqizo akuvumi ukuchaza ukuthi imishane isho ukuthini noma kungani kubalulekile!
Ngenhlanhla, impedance ifana ne-rock'n'roll enkulu. Ukuzama ukuqonda konke mayelana nayo kungaba nzima, kodwa akudingeki ukuba uqonde konke okukuyo ukuze "uthole". Eqinisweni, umqondo we-impedance ulula kakhulu ukuwuqonda. Ngakho-ke funda ukuze uthole ukuthi yini okudingeka ukwazi ngaphandle kokuzwa sengathi uthatha inkambo yezinga lokuqeqesha e-MIT.
I & # 39; s Like Water
Uma ukhuluma ngezinto ezifana ne- Watts kanye ne- voltage namandla , abaningi abalobi be-audio basebenzisa ukufaniswa kwamanzi ageleza ngepayipi. Kungani? Ngoba kungumfanekiso omkhulu wokuthi abantu bangabona ngeso lengqondo futhi bahlobanise!
Cabanga ngesikhulumi njengepayipi. Cabanga ngesignali yomsindo (noma, uma ukhetha, umculo) njengamanzi ageleza ngepayipi. Okukhudlwana ipayipi, amanzi angaphesheya kalula angadlula kulo. Amapayipi amakhulu angaphatha futhi ivolumu emanzini amaningi agelezayo. Ngakho isikhulumi esinomkhuhlane ophansi sinjengeyipayipi enkulu; Ivumela isignali kagesi ngaphezulu futhi ivumela ukugeleza kalula.
Lezi zikhuluzi zingabonakala zilinganisiwe ukuletha ama-watts angu-100 ku-8 ohms impedance, noma mhlawumbe ama-150 noma ama-watts angu-4 angena ku-4 ohms impedance. I-impedance engezansi, ugesi kalula (uphawu / umculo) ugeleza ngesipikha.
Ngabe lokhu kusho ukuthi umuntu kufanele athenge isikhulumi nge-impedance ephansi? Akunjalo, ngoba eziningi zeziphakamisi aziklanyelwe ukusebenza nezikhulumi ezingu-4-ohm. Cabanga emuva kule pipu ethwala amanzi. Ungabeka ipayipi enkulu, kepha izothatha amanzi amaningi kuphela uma unepompo elinamandla okwanele ukuhlinzeka konke lokho okugeleza kwamanzi.
Ingabe Ukunciphisa Okuphansi Kusho Imfanelo Ephakeme?
Thatha cishe noma yisiphi isikhulumi esenziwe namhlanje, sixhuma cishe kunoma yiliphi i- amplifier eyenziwe namhlanje, futhi uzothola ivolumu eyanele ekamelweni lakho lokuphumula. Ngakho-ke yini inzuzo, uthi, isikhulumi se-4-ohm esiphambene nesipikha se-8-ohm? Akukho, ngempela, ngaphandle kweyodwa; i-impedance encane ngezinye izikhathi ibonisa inani lokuhleleka kahle kwabenjiniyela lapho beklama isikhulumi.
Okokuqala, isizinda esincane. Impedance yesikhulumi iyashintsha njengoba umsindo uphakamisa futhi wehla ku-pitch (noma imvamisa). Isibonelo, ku-41 Hz (inothi eliphansi kunazo zonke ku-bass guitar standard), impedance yesipikha kungenzeka ibe ngu-10 ohms. Kodwa ku-2,000 Hz (ukungena kuhlu oluphezulu lwe-violin), impedance ingaba yi-3 ohms kuphela. Noma kungenzeka iguqulwe. Ukucaciswa kwe- impedance okubonwe esikhulumi kuyisilinganiso esibi kakhulu. Indlela i-impedance yezikhulumi ezintathu ezihlukene ezishintsha ngayo ngokuphathelene nemvamisa yomsindo ingabonwa kusuka eshadini ngaphezulu kwalesi sihloko.
Ezinye zezinkampani ezikhulume kakhulu ezikhulumayo zifuna ngisho nokuphuma kwempikiswano yezikhulumi zomsindo oqhubekayo kulo lonke uhla lwalalelwayo. Njengoba nje umuntu angase ahlele isiqongo sokhuni ukuze asuse izingqimba eziphakeme zokusanhlamvu, unjiniyela okhulumela isisetshenziswa angasebenzisa izimboni zikagesi ukuze ahlasele izindawo eziphezulu ze-impedance. Yingakho izikhulumi ezingu-4-ohm zivame ukulalelwayo okuphezulu, kodwa ezingavamile kumsindo wemakethe amaningi.
Isistimu Yakho Ingayiphatha?
Uma ukhetha isikhulumi se-4-ohm, qiniseka ukuthi i-amplifier noma umamukeli angayiphatha. Umuntu angazi kanjani? Ngezinye izikhathi akucaci. Kodwa uma umenzi we-amplifier / receiver ashicilela izilinganiso zamandla kuma-8 no- 4 ohms, uphephile. Ama-amplifiers amaningi ahlukene (okungukuthi, ngaphandle kwe-preamp noma i-tuner eyakhelwe ngaphakathi) angakwazi ukusingatha izikhulumi ezingu-4-ohm, njengoba kungenzeka nanoma iyiphi i -receiver ye-$ 1,300-up-up A / V.
Nokho, ngingaba nesibindi sokubhangqa izikhulumi ezingu-4-ohm ezine- receiver ye $ 399 A / V noma isamukeli se-$ 150 se-stereo. Kungenzeka ukuthi kulungile kumvolumu ophansi, kodwa ukuyikhipha kanye nepompo (amplifier) kungenzeka ukuthi ayinalo amandla okudla le pipe enkulu (isikhulumi). Icala elihle kakhulu, umamukeli uzokuvala okwesikhashana. Icala elibi kunazo zonke, uzobe ushisa izamukeli ngokushesha kunomshayeli we-NASCAR ofaka izinjini.
Ukukhuluma ngezimoto, inothi lokugcina: Emotweni yemoto, izikhulumi ezingu-4-ohm zivamile. Kungenxa yokuthi izinhlelo zomsindo wezimoto zigijima ku-volts 12 ye-DC esikhundleni se-AC volts 120. I-impedance ye-4-ohm ivumela izikhulumi zomsindo wemoto ukudonsa amandla amaningi kusuka kum amp amp audio amp amp audio. Kodwa ungakhathazeki: Ama-amp amps audio aklanyelwe ukusetshenziswa nezikhulumi eziphansi. Ngakho-ke ungenelele futhi ujabulele! Kodwa sicela, hhayi endaweni yami.