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Amplificator Pioneer

 
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Aradeanu
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Joined: 02 Jul 2009
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PostPosted: Thu Jan 28, 2010 3:57 pm    Post subject: Amplificator Pioneer Reply with quote

Sal,tuturor,am un amplificator audio de camera Pioneer Sa 770, nu stiu de ce se incalzeste dupa vreo 10 minute de functionare la un volum de 1\3 (precizez ca am legat pe el un woofer pe 4 ohmi).In spate pe el scrieca este pe 6-16 ohmi.Poate fi o problema ca am pus un woofer de 4 ohmi?.Multumesc anticipat
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X4nd3R
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Joined: 28 Sep 2007
Posts: 208
Location: Alba Iulia

PostPosted: Thu Jan 28, 2010 5:24 pm    Post subject: Re: Amplificator Pioneer Reply with quote

da Wink nu e recomandat sa folosesti sub specificatiile amplificatorului, pentru ca se supraincalzeste ori se distruge etajul final si risti sa plangi dupa ea Exclamation
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Aradeanu
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Joined: 02 Jul 2009
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PostPosted: Thu Jan 28, 2010 9:53 pm    Post subject: Reply with quote

Dar sti ce mi se pare interesant,pornesc amplificatorul si nu-i dau semnal audio si il las doar aprins si tot se incalzeste in maxim 10 minute Sad acesta este wooferul. http://www.ceneo.pl/showPicture.aspx?productID=638512
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Valentonx
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Joined: 23 Jan 2010
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PostPosted: Thu Jan 28, 2010 9:57 pm    Post subject: Reply with quote

Cred ca nu prea conteaza daca ii dai s-au nu semnal impedanta aia e prea mica si de aceea se incalzeste, asta in cazul in care nu se incalzeste si cu dizoare cu impedanta peste 6 OHM.
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Dj_Dog
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Joined: 17 Jun 2005
Posts: 949
Location: bucuresti / titan

PostPosted: Thu Jan 28, 2010 11:36 pm    Post subject: Reply with quote

probabil almplificatorul lucreaza in clasa A si partea finala e ca si cum amplificatorul e dat la maxim indiferent de semnalul de intrare ( practic e in consum la maxim fata de clasa B care consuma in functie de volumul de intrare)
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Aradeanu
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PostPosted: Fri Jan 29, 2010 11:59 am    Post subject: Reply with quote

Sa inteleg ca nu e defect doar ca etajul final este din clasa A, este o comportare normala?
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Dj_Dog
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PostPosted: Fri Jan 29, 2010 12:15 pm    Post subject: Reply with quote

da si cele din clasa A se incalzesc mai mult decat finalele din alte clase dar totusi nu pune boxe mai mici decat specificatiile producatorului
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Aradeanu
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PostPosted: Fri Jan 29, 2010 1:39 pm    Post subject: Reply with quote

Multumesc pentru sfaturi, numai bine.
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