Mundima yemaspika emultimedia, pfungwa ye "independent power amplifier" yakatanga kuoneka muna 2002. Mushure menguva yekukura mumusika, kunenge muna 2005 na2006, iyi pfungwa itsva yekugadzira maspika emultimedia yakagamuchirwa zvakanyanya nevatengi. Vagadziri vemaspika makuru vakaunzawo maspika matsva e2.1 ane magadzirirwo e "independent power amplifier", izvo zvakakonzera kutya kwe "independent power amplifier". Kutaura zvazviri, maererano nemhando yeruzha rwespika, haruzogadziriswi zvakanyanya nekuda kwekugadzirwa kwe "independent power amplifier". Ma "independent power amplifier" anogona kuderedza chete kukanganisa kwe "electromagnetic interference" pamhando yeruzha, uye haana kukwana kukonzera kuvandudzwa kukuru kweruzha. Kunyange zvakadaro, dhizaini ye "independent power amplifier" ichiri nemabhenefiti akawanda ayo asina maspika e 2.1 multimedia:

Chekutanga, amplifier yesimba yakazvimiririra haina muganho wehuwandu hwakavakirwa mukati, saka inogona kuita kuti kupisa kupararire zviri nani. Maspika akajairwa ane ma amplifier esimba akavakirwa mukati anogona kungobvisa kupisa kuburikidza ne convection ye inverter tube nekuti akavharwa mubhokisi rehuni risina conductivity yekupisa. Kana iri amplifier yesimba yakazvimiririra, kunyangwe dunhu re amplifier yesimba rakavharirwawo mubhokisi, nekuti bhokisi re amplifier yesimba harina kufanana ne speaker, hapana chinodiwa che sealing, saka huwandu hwakawanda hwemaburi e heat dissipation anogona kuvhurwa munzvimbo ye heating component, kuitira kuti kupisa kupfuure ne natural convection. Pararira nekukurumidza. Izvi zvakakosha zvikuru kune ma amplifier ane simba guru.

Chechipiri, kubva pachikamu chesimba remagetsi, simba remagetsi rakazvimirira rinobatsira pakugadzira macircuit. Kune vatauri vakajairwa, nekuda kwezvinhu zvakawanda zvakaita sehuwandu uye kugadzikana, dhizaini yedunhu iri diki kwazvo, uye zvakaoma kuwana dhizaini yedunhu rakagadziridzwa. Simba remagetsi rakazvimirira, nekuti rine bhokisi resimba remagetsi rakazvimirira, rine nzvimbo yakakwana, saka dhizaini yedunhu inogona kuenderera mberi kubva pane zvinodiwa zvekugadzira magetsi pasina kukanganiswa nezvinhu zvisingatarisirwi. Simba remagetsi rakazvimirira rinobatsira pakushanda kwakasimba kwedunhu.

Chechitatu, kune masipika ane ma amplifiers emagetsi akavakirwa mukati, mweya uri mubhokisi unogara uchidedera, zvichiita kuti PCB board ye amplifier yemagetsi nezvikamu zvemagetsi zviite ruzha, uye kudedera kwema capacitor nezvimwe zvikamu zvichadzoserwa muruzha, zvichikonzera ruzha. Pamusoro pezvo, sipika ichavewo nemhedzisiro yemagetsi, kunyangwe iri sipika inodzivirira magineti zvizere, pachava nekubuda kwemagnetic kusingadzivisike, kunyanya woofer hombe. Zvikamu zvemagetsi zvakaita sema circuit boards nema ICs zvinokanganiswa nekubuda kwemagnetic flux, izvo zvinokanganisa magetsi ari mudunhu, zvichikonzera kupindira kweruzha rwemagetsi.

Pamusoro pezvo, masipika ane dhizaini yesimba remagetsi akazvimiririra anoshandisa nzira yekudzora makabati esimba remagetsi, iyo inosunungura zvakanyanya kuiswa kwesubwoofer uye inochengetedza nzvimbo yakakosha yedesktop.

Tichitaura nezvezvakanakira zvema amplifiers akawanda akazvimirira, kutaura chokwadi, zvinogona kupfupikiswa mumutsara mumwe chete - kana usingafungi nezvehukuru, mutengo, nezvimwewo, uye uchingofunga nezvekushandiswa chete, saka amplifier yemagetsi yakazvimirira iri nani pane dhizaini ye amplifier yemagetsi yakavakirwa mukati.