Kutsatsa mphamvu zamagetsi ndi chimodzi mwa zofunika kwambiri pakusankha wamakono kapena wolandila stereo. Mphamvu imayesedwa mu Watts (W) pa njira, ndipo chisankho chokhudza mphamvu zomwe munthu amafunikira ziyenera kukhazikitsidwa pazifukwa zingapo. Ganizirani zosankha za mtundu wanu zomwe mukuganiza kuti mugwiritse ntchito, kukula kwake, ndi maonekedwe a chipinda chokumvetsera, komanso nyimbo zomwe mukufuna kuziimba.
Lamulo lachiphindi ndiloti muyenera kufanana ndi zofunikira za oyankhula ndi zotsatira za mphamvu ya amplifier / receiver. Mufuna kuonetsetsa kuti mphamvu ikugwirizana ndi chiwerengero cha impedance kwa oyankhula onse. Kumbukirani kuti oyankhula ena amafunika mphamvu zochepa kuposa ena - kutsegula mawu omveketsa mawu amavomerezedwa (decodel) (dB), yomwe ndiyeso ya kuchuluka kwa mawu opangidwa ndi mphamvu yowonjezera . Mwachitsanzo, wokamba nkhani yemwe ali ndi mphamvu zochepa (kunena kuti, 88 mpaka 93 dB) amafuna mphamvu yowonjezera mphamvu kuposa wolankhula ndi mphamvu yapamwamba (94 mpaka 100 dB kapena zambiri) kuti azisewera ndi kumveka bwino pa mlingo womwewo. .
Mphamvu zogwiritsira ntchito mphamvu ndi wokamba nkhani sizolumikizana. Kukayikira mphamvu ya amplifier / receiver sikudzamveka mobwerezabwereza kuti nyimbo zikumveka bwanji (kutanthauza: ndi logarithmic). Mwachitsanzo, woyendetsa maselo ndi 100 W pa kanema sangasewere kawiri monga amplifier / receiver ndi 50 W pamsewu pogwiritsa ntchito omwewo. Muzochitika zotere, kusiyana kwakukulu mukulankhula kwakukulu kungakhale kokweza pang'ono - kusintha ndi 3 dB yokha. Zimatengera kuwonjezeka kwa 10 dB kuti apangidwe akambe kusewera mobwerezabwereza monga poyamba (kuwonjezeka kwa 1 dB sikungatheke kuzindikira). M'malo mwake, kukhala ndi mphamvu yowonjezera mphamvu kumathandiza kuti pulogalamuyi ikhale ndi mapepala omveka mosavuta komanso kuchepa, zomwe zimabweretsa chidziwitso chabwino. Palibe chifukwa chachisangalalo chakumvetsera ngati mphamvu yochuluka imapangitsa okamba kupotoza ndi kumveka koopsa.m
Ichi ndichifukwa chake ndibwino kudziwanso zambiri za oyankhula omwe mukukonzekera kuti mugwiritse ntchito. Ena amafunika kugwira ntchito molimbika kwambiri kuposa ena kuti akwaniritse zofunikirako zoyenera. Wokamba nkhani wina amagwira ntchito molimbika kuposa ena poyesa kumveka mokweza poyera. Ngati chipinda chokumvetsera chiri chaching'ono ndipo / kapena chimanyamula bwino, simungathe kukhala ndi amphamvu amphamvu kwambiri, makamaka ndi oyankhula omwe ali ofunika kwambiri. Koma zipinda zazikulu ndi / kapena madera akuluakulu omvetsera ndi / kapena oyankhula ocheperako pang'ono adzafuna mphamvu zambiri kuchokera ku gwero.
Poyerekeza mphamvu zopangidwa ndi amplifiers / ovomerezeka, ndizofunika kumvetsetsa kusiyana kwa mitundu ya mayeso. Mphamvu yowonjezereka kwambiri ndi RMS (Root Mean Square), koma opanga angaperekenso chiyero cha mphamvu yapamwamba. Choyamba chimasonyeza mphamvu zopitilira zowonjezereka pa nthawi, pomwe zizindikirozo zimasonyeza zomwe zimachitika pang'onopang'ono. Ndondomeko zowonjezera zingathe kulembetsanso mphamvu zopatsa mphamvu (zomwe zingagwiritsidwe ntchito nthawi zingapo) ndi mphamvu yapamwamba (zomwe zingathe kugwiritsidwa ntchito mwafupikitsa), zomwe ziyenera kuganiziridwa mosamalitsa. Simukufuna kujambula pamwamba pamwamba kwambiri kuti muwononge nokha kapena zipangizo zina zogwirizana, kuphatikizapo okamba.
Onetsetsani kuti muziyerekeza zomwezo pambali musanapange chisankho chomaliza. Komanso dziwani kuti ena opanga akhoza kupanga zida zogwiritsira ntchito mphamvu poyeza nthawi imodzi, nenani 1 kHz, m'malo mozungulira nthawi zonse, monga 20 Hz kufika 20 kHz. Kawirikawiri, simungapite molakwika ndi kukhala ndi mphamvu zambiri zomwe muli nazo kusiyana ndi ayi, ngakhale simukukonzekera nyimbo zowonongeka pamagulu amtundu. Olemba mapulogalamu / ovomerezeka ndi makanema apamwamba akhoza kupulumutsa popanda kufunika kuti akankhidwire mpaka pamtunda wopitirira malire, omwe angapangitse kusokonezeka ndi khalidwe lakumwamba.