Mu gawo la ma speaker a multimedia, lingaliro la independent power amplifier linayamba kuonekera mu 2002. Pambuyo pa nthawi yolima msika, cha m'ma 2005 ndi 2006, lingaliro latsopanoli la ma speaker a multimedia ladziwika kwambiri ndi ogula. Opanga ma speaker akuluakulu ayambitsanso ma speaker atsopano a 2.1 okhala ndi mapangidwe a ma power amplifier odziyimira pawokha, zomwe zayambitsa mantha a "independent power amplifier". Ndipotu, ponena za mtundu wa mawu a speaker, sizingasinthidwe kwambiri chifukwa cha kapangidwe ka independent power amplifier. Ma power amplifier odziyimira pawokha amatha kuchepetsa bwino mphamvu ya ma electromagnetic kusokoneza kwa mawu, ndipo sakwanira kupangitsa kuti mawu akhale abwino kwambiri. Komabe, kapangidwe ka independent power amplifier kadali ndi zabwino zambiri zomwe ma speaker wamba a 2.1 multimedia alibe:

Choyamba, amplifier yamphamvu yodziyimira payokha ilibe malire a voliyumu yomangidwa mkati, kotero imatha kupangitsa kutentha kukhala kosavuta. Ma speaker wamba okhala ndi ma amplifier amagetsi omangidwa mkati amatha kungotulutsa kutentha kudzera mu convection ya chubu cha inverter chifukwa amatsekedwa m'bokosi lamatabwa lopanda kutentha koyenera. Ponena za amplifier yamphamvu yodziyimira payokha, ngakhale kuti dera la amplifier yamphamvu limatsekedwanso m'bokosi, chifukwa bokosi la amplifier yamphamvu silili ngati sipika, palibe chifukwa chotseka, kotero mabowo ambiri otulutsa kutentha amatha kutsegulidwa pamalo a gawo lotenthetsera, kuti kutentha kudutse mu convection yachilengedwe. Balitsani mwachangu. Izi ndizofunikira kwambiri kwa ma amplifier amphamvu kwambiri.

Kachiwiri, kuchokera ku mbali ya amplifier yamagetsi, amplifier yamagetsi yodziyimira payokha ndi yothandiza pakupanga ma circuit. Kwa okamba wamba, chifukwa cha zinthu zambiri monga voliyumu ndi kukhazikika, kapangidwe ka ma circuit ndi kakang'ono kwambiri, ndipo n'kovuta kupeza mawonekedwe abwino a ma circuit. Amplifier yamagetsi yodziyimira payokha, chifukwa ili ndi bokosi la amplifier yamagetsi yodziyimira payokha, ili ndi malo okwanira, kotero kapangidwe ka ma circuit kangapitirire kuchokera ku zosowa za kapangidwe kamagetsi popanda kusokonezedwa ndi zinthu zenizeni. Amplifier yamagetsi yodziyimira payokha ndi yothandiza pakugwira ntchito kokhazikika kwa ma circuit.

Chachitatu, kwa ma speaker omwe ali ndi ma amplifiers amphamvu omangidwa mkati, mpweya womwe uli m'bokosilo umagwedezeka nthawi zonse, zomwe zimapangitsa kuti PCB board ndi zida zamagetsi za power amplifier zimveke bwino, ndipo kugwedezeka kwa ma capacitor ndi zida zina kudzaseweredwanso mu phokoso, zomwe zimapangitsa phokoso. Kuphatikiza apo, speaker idzakhalanso ndi mphamvu zamagetsi, ngakhale itakhala yotsutsana ndi maginito kwathunthu, padzakhala kutayikira kwa maginito kosapeŵeka, makamaka woofer yayikulu. Zida zamagetsi monga ma circuit board ndi ma IC zimakhudzidwa ndi kutayikira kwa maginito, komwe kumasokoneza mphamvu zamagetsi mu dera, zomwe zimapangitsa kuti phokoso lamagetsi lisokonezeke.

Kuphatikiza apo, ma speaker omwe ali ndi kapangidwe ka mphamvu yodziyimira pawokha amagwiritsa ntchito njira yowongolera makabati a mphamvu yolumikizira, yomwe imamasula kwambiri malo a subwoofer ndikusunga malo ofunika pa desktop.

Ponena za ubwino wa ma amplifiers ambiri odziyimira pawokha, kwenikweni, zitha kufotokozedwa mwachidule mu chiganizo chimodzi - ngati simuganizira kukula, mtengo, ndi zina zotero, ndikungoganizira momwe amagwiritsidwira ntchito, ndiye kuti amplifier yodziyimira pawokha ndi yabwino kuposa kapangidwe ka amplifier yomangidwa mkati.