Kwicandelo lezithethi zemultimedia, ingcamango ye-amplifier yamandla ezimeleyo yaqala ukubonakala ngo-2002. Emva kwexesha lokukhula kwimarike, malunga no-2005 no-2006, le ngcamango intsha yoyilo lwezithethi zemultimedia iye yaqatshelwa ngokubanzi ngabathengi. Abavelisi bezithethi ezinkulu bazise izithethi ezintsha ze-2.1 ezineedizayini ze-amplifier yamandla ezimeleyo, nto leyo eye yabangela ukwanda kwe-"amplifiers yamandla ezimeleyo" yokuthenga ngoloyiko. Enyanisweni, ngokubhekiselele kumgangatho wesandi sesithethi, ayizukuphuculwa kakhulu ngenxa yoyilo lwe-amplifier yamandla ezimeleyo. Izikhulisi zamandla ezizimeleyo zinokunciphisa kuphela impembelelo yokuphazamiseka kwe-electromagnetic kumgangatho wesandi, kwaye azanele ukubangela uphuculo olukhulu kumgangatho wesandi. Nangona kunjalo, uyilo lwe-amplifier yamandla ezimeleyo luseneengenelo ezininzi ezingenazo izithethi zemultimedia eziqhelekileyo ze-2.1:

Okokuqala, i-amplifier yamandla ezimeleyo ayinayo imida yomthamo owakhelwe ngaphakathi, ngoko ke inokufezekisa ukusasazwa kobushushu okungcono. Izithethi eziqhelekileyo ezinee-amplifier zamandla ezakhelwe ngaphakathi zinokusasaza ubushushu kuphela nge-convection yetyhubhu ye-inverter kuba zivalwe kwibhokisi yomthi ene-thermal conductivity embi. Ngokuphathelele i-amplifier yamandla ezimeleyo, nangona isekethe ye-amplifier yamandla nayo ivalwe kwibhokisi, kuba ibhokisi ye-amplifier yamandla ayifani nesithethi, akukho mfuneko yokutywina, ngoko ke inani elikhulu lemingxunya yokusasazwa kobushushu inokuvulwa kwindawo yecandelo lokufudumeza, ukuze ubushushu budlule kwi-convection yendalo. Zisasazeke ngokukhawuleza. Oku kubaluleke kakhulu kwii-amplifier zamandla aphezulu.

Okwesibini, kwicala le-power amplifier, i-power amplifier ezimeleyo iluncedo kuyilo lwesekethe. Kwizithethi eziqhelekileyo, ngenxa yezinto ezininzi ezifana nomthamo kunye nozinzo, uyilo lwesekethe luncinci kakhulu, kwaye kunzima ukufezekisa uyilo lwesekethe olulungisiweyo. I-power amplifier ezimeleyo, kuba inebhokisi ye-power amplifier ezimeleyo, inendawo eyaneleyo, ngoko ke uyilo lwesekethe lunokuqhubeka neemfuno zoyilo lombane ngaphandle kokuphazanyiswa zizinto ezijolise ngqo. I-power amplifier ezimeleyo iluncedo ekusebenzeni okuzinzileyo kwesekethe.

Okwesithathu, kwizithethi ezinee-amplifier zamandla ezakhelwe ngaphakathi, umoya osebhokisini uhlala ungcangcazela, nto leyo ebangela ukuba ibhodi ye-PCB ye-amplifier yamandla kunye nezinto ze-elektroniki zidideke, kwaye ukungcangcazela kwee-capacitors kunye nezinye izinto kuya kudlalwa kwakhona kwisandi, nto leyo ebangela ingxolo. Ukongeza, isithethi siya kuba nemiphumo ye-electromagnetic, nokuba sisithethi esichasene ngokupheleleyo ne-magnetic, kuya kubakho ukuvuza kwe-magnetic okungenakuphepheka, ingakumbi i-woofer enkulu. Izinto ze-elektroniki ezifana neebhodi zesekethe kunye nee-IC zichaphazeleka kukuvuza kwe-magnetic flux, okuya kuphazamisana nomsinga kwisekethe, okubangela ukuphazamiseka kwesandi somsinga.

Ukongeza, izithethi ezine-power amplifier ezizimeleyo zisebenzisa indlela yokulawula ikhabhinethi ye-power amplifier, ekhulula kakhulu indawo ye-subwoofer kwaye igcine indawo ebalulekileyo yedesktop.

Ukuthetha ngeenzuzo zee-amplifier ezininzi zamandla ezizimeleyo, eneneni, oku kungashwankathelwa kwisivakalisi esinye - ukuba awucingi ngobukhulu, ixabiso, njl.njl., kwaye ucinge kuphela ngesiphumo sokusetyenziswa, ngoko i-amplifier yamandla ezimeleyo ingcono kunoyilo lwe-amplifier yamandla eyakhelwe ngaphakathi.