Paul Fagadar Posted January 14, 2016 Share Posted January 14, 2016 Salut,am o electro-clasica Yamaha APX 6n insa am o problema cu preampul sau doza, amplificata chitara functioneaza perfect (eq, master vol tot merge perfect) insa are un zgomot de fond foarte mare si haotic (cand mai tare cand mai incet), am luat preampul jos am refacut toate lipiturile deoarece chitara a stat multa vreme, am verificat conexiunea la masa, dar dupa toata munca am obtinut acelasi zgomot de fond insa acum este ,,stabil,, (nu fluctueaza ca intensitate). am verificat jack-ul e in regula, doza e in regula din punctul meu de vedere capteaza sunetul foarte bine si preampul se comporta la fel cu sau fara doza conectata. a mai patit cineva?nu prea am pe nimeni care se pricepe in zona asa ca niste sfaturi m-ar ajuta foarte mult. multumesc Link to comment Share on other sites More sharing options...
picnic Posted January 14, 2016 Share Posted January 14, 2016 Doza este plata, tip panglica? Link to comment Share on other sites More sharing options...
Paul Fagadar Posted January 14, 2016 Author Share Posted January 14, 2016 da Link to comment Share on other sites More sharing options...
picnic Posted January 14, 2016 Share Posted January 14, 2016 Posibil sa fie doza de vina, nu prea e de calitate, am schimbat vreo 4 - 5 anul trecut... Link to comment Share on other sites More sharing options...
karpi Posted January 14, 2016 Share Posted January 14, 2016 (edited) Zgomot ? in ce registru ? Aceste doze au impedanta enorma ,cu joasele la maxim din EQ am un "humm" dar oricum sunt joase inutilizabile si nu setez asa ceva . Sa incerci fara piezo (doza) vezi ce face ..preampliful ..zgomot si mai ales "aleator " poate sa produca un condensator ...de obicei unul electrolitic sau tantal ,,,.altceva nu prea are ce sa faca figuri ..daca lipiturile le-ai refacut .. Piezo il poti incerca direct fara preamp sa vezi daca functioneaza ..o sa sune mai inchis ... Edited January 14, 2016 by karpi Link to comment Share on other sites More sharing options...
Paul Fagadar Posted January 15, 2016 Author Share Posted January 15, 2016 am deconectat doza (are doua mici mufe pe care le-am scos) insa e acelasi zgomot, iar daca daca deconectez si preampul de jack sunetul inceteaza, asa ca ramane doar preampul sa fie vinovat de zgomot, nu? am sa incerc si cu alt preamp poate problema o sa se rezolve. Link to comment Share on other sites More sharing options...
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