Kwa pafupifupi wokamba aliyense kapena seti ya headphones yomwe mungagule, mudzapeza mndandanda wa mpweya womwe umapezeka mu ohms (woimira ngati Ω). Koma zolembazo kapena zolembera zamagetsi siziwonekeratu kuti impedance imatanthauza kapena chifukwa chake ndizofunika!
Mwamwayi, mphulupulu imakhala ngati rock'n'roll yaikulu. Kuyesera kumvetsetsa zonse za izo kungakhale zovuta, koma wina sakusowa kumvetsa zonse za izo kuti "apeze" izo. Ndipotu, lingaliro la impedance ndi losavuta kumva. Choncho werengani kuti mupeze zomwe muyenera kudziwa popanda kumva ngati mukuphunzira maphunziro a MIT ku MIT.
Imafanana ndi Madzi
Pokamba za zinthu monga watts ndi magetsi ndi mphamvu , ambiri olemba olemba amagwiritsa ntchito kufanana kwa madzi akuyenda kupyolera mu chitoliro. Chifukwa chiyani? Chifukwa ndi kufanana kwakukulu komwe anthu angaganizire ndikugwirizana nawo!
Ganizirani za wokamba nkhani ngati chitoliro. Ganizirani za chizindikiro cha audio (kapena, ngati mukufuna, nyimbo) monga madzi akuyenda kudzera mu chitoliro. Pakati pazitoliro, madzi mosavuta amatha kudutsa mmenemo. Mabomba akuluakulu angathenso kuthana ndi madzi ochuluka. Kotero wokamba ali ndi mpweya wapansi ali ngati chitoliro chachikulu; imatumiza chizindikiro cha magetsi podutsa ndipo imalola kuti imve mosavuta.
Izi ndizowonjezereka zitha kuwonetsedwa kuti zimapereka Watts 100 mu mpweya wa 8 ohms, kapena mwinamwake 150 kapena 200 Watts mu mpweya wa 4 ohm. Kutsika kwa msana, magetsi mosavuta (chizindikiro / nyimbo) amachokera kudzera mwa wokamba nkhani.
Kodi izi zikutanthawuza kuti munthu ayenera kugula wokamba nkhani ali ndi mpweya wotsika? Ayi, chifukwa zambiri zamakono sizinagwiritsidwe ntchito ndi o-ohm okamba. Ganiziraninso za chitoliro chomwe chimanyamula madzi. Mutha kuyika chitoliro chachikulu, koma chimangotenga madzi ambiri ngati muli ndi mpope wamphamvu kuti mupereke madzi ochuluka.
Kodi Kutsika Kwambiri Kumatanthauza Kutchuka?
Tengani pafupifupi wolankhula aliyense wopanga lero, kulumikiza kwa pafupifupi kulipangitsa kulikonse lero, ndipo mupeza zowonjezera zokwanira pa chipinda chanu chokhalamo. Kotero ndi phindu lanji, kunena, o-ohm oyankhula ndi oyankhula 8-ohm? Palibe, kwenikweni, kupatula imodzi; Nthaŵi zina kutsika kwapadera kumaonetsa kuchuluka kwa kukonza bwino akatswiri a injini pamene anapanga wokamba nkhaniyo.
Choyamba, chiyambi chaching'ono. Kutuluka kwa wokamba nkhani kumasintha ngati phokoso limakwera mmwamba (kapena pafupipafupi). Mwachitsanzo, pa 41 Hz (ndondomeko yotsika kwambiri pa gitala yoyenera), kutuluka kwa wokamba nkhani kungakhale 10 ohms. Koma pa 2,000 Hz (kulowa m'mwamba mwa violin), impedance ikhoza kukhala ma ohms atatu okha. Kapena angasinthidwe. Mndandanda wa mpikisano womwe umapezeka pa wokamba nkhani ndi wochepa chabe. Mmene mpikisano wa okamba atatu omwe amasinthira umasinthira motsatizana ndi kuyankhula kwafupipafupi kumawoneka kuchokera pa chithunzi cha pamwamba pa nkhaniyi.
Ena mwa akatswiri olankhula bwino kwambiri amalankhula ngakhale kutuluka kwa okamba kuti azitha kuwamveka phokoso lonselo. Monga momwe wina angagwiritsire mchenga chidutswa cha nkhuni kuti achotse matunda akuluakulu a tirigu, wopanga maulendo angagwiritse ntchito magetsi oyendetsa galimoto kuti agwetse malo otsika kwambiri. Ichi ndichifukwa chake oyankhula o-ohm 4 ali ofala kumvetsera kwapamwamba, koma samawoneka pamamalonda a msika.
Kodi Dongosolo Lanu Lingagwiritsidwe Ntchito?
Mukasankha wokamba 4-ohm, onetsetsani kuti amplifier kapena wolandila akhoza kuthana nazo. Munthu angadziwe bwanji? Nthawi zina siziri bwino. Koma ngati wopanga amplifier / receiver akusindikiza ziwerengero zamagetsi m'mawonekedwe awiri ndi 4, muli otetezeka. Ambiri ampatuli osiyana (ie, popanda preamp kapena tuner) angathe kuthandizira o-ohm okamba, monga momwe angapezerere aliyense wa $ 1,300-ndi-up A / V.
Komabe, ndikanakayikira kuti ndikulankhulana okamba 4-ohm wokwana $ 399 A / V kapena wolandira $ 150 stereo. Zitha kukhala zabwino pamutu wochepa, koma zimangokhala ndi mpope (amplifier) sangakhale ndi mphamvu yakudyetsa chitoliro chachikulu. Mlandu wabwino kwambiri, wolandirayo adzatseka pang'onopang'ono. Choipa kwambiri, mudzakhala akuwotcha mofulumira kuposa momwe woyendetsa NASCAR amavala injini.
Kulankhula za magalimoto, cholemba chomaliza: Mu vodiyo yamasewera, o-ohm okamba ndi omwe amatha. Ndichifukwa chakuti mawotchi amamoto amayendetsa 12 volts DC m'malo mwa volts 120. Mpumulo wa 4-ohm umalola okamba nkhani za galimoto kuti akoke mphamvu zambiri kuchokera ku galimoto yotsika yamoto. Koma musadandaule: Ma audio amps apangidwa kuti agwiritsidwe ntchito ndi omvera otsika. Choncho tinyamule ndi kusangalala! Koma chonde, osati m'dera langa.