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devilgenius

Suierat boxe masina

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Am montat un amplificator pe masina, l-am legat la boxe fata/spate dar am o problema... cand pornesc motorul se aude un suierat in boxe, cand calc pe pedala de frana parca se amplifica suieratul...Cablurile sunt trase separat: alimentare prag stanga, rca - remote prag dreapta, am mai observat ca daca scot RCA-uril din amplificator nu se mai aude suieratul, care sa fie problema ? :jytuiyu

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trebuie sa pui un filtru de deparazitare de la alt rcs auto mai vechi sau care nu mai merge.

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ciudat, statia are in ea 2 bobine si 2 condensatori de 1000uF pe alimentare, nu cumva acesta este filtrul de deparazitare?

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Trebuie sa mai investighez, inainte aveam un subwoofer activ dar nu se auzea suieratul in el...

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Am descoperit provenienta suieratului, e de la alimentarea cassului ...Avetii idee unde gasesc un filtru ?Apropo, am gasit o schema ? O fi buna ?

post-13402-139829615066_thumb.jpg

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Poate ca ai si o bucla de masa prin cabluri pe acolo. Incearca cumva sa aplici doar semnalul activ de la cablul RCA, fara masa.

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Am bagat semnal in statie doar cu plusul RCA-ului si tot asa face, am constatat ca din casetofon e treaba, masina fiind benzinara din '97, banuiesc ca e din cauza fiselor de la bujii, si de la ceva pompa de benzina, comp de airbag etc...Apropo, am facut schema dar un condensator de 1000uF este de 35V, e vreo problema ?

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Am cumparat filtru deparazitare, l`am montat, a mai diminuat ceva dar tot se aude motorul cand e pornit, ce naiba sa`i mai fac ? :|

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