gombotz Posted October 2, 2008 Share Posted October 2, 2008 Noroc. AM un DRRI. Ati facut careva bias la lampi? Is curios daca schimba soundul, nu ca nu mi-ar placea si asa, dar asa avem noi, cataretii, mancarimi.... Multam' Link to comment Share on other sites More sharing options...
Guest Don MaXxX Posted October 2, 2008 Share Posted October 2, 2008 Noroc.AM un DRRI. Ati facut careva bias la lampi? Is curios daca schimba soundul, nu ca nu mi-ar placea si asa, dar asa avem noi, cataretii, mancarimi.... Multam' din cate stiu eu bias-ul este din fabrica, nu? Link to comment Share on other sites More sharing options...
Silviu_i Posted October 2, 2008 Share Posted October 2, 2008 Noroc.AM un DRRI. Ati facut careva bias la lampi? Is curios daca schimba soundul, nu ca nu mi-ar placea si asa, dar asa avem noi, cataretii, mancarimi.... Multam' pai biasul consta in convertirea ampului pe alte lampi, si daca ii schimbi lampile, da influenteaza sunetul.Fiecare lampa are soundul ei. Link to comment Share on other sites More sharing options...
Guest Baumwolle Posted October 2, 2008 Share Posted October 2, 2008 pai biasul consta in convertirea ampului pe alte lampi Serios? The amplifier bias, and the problems associated with it confuses many musicians. If you think of a kitchen tap as a valve and the water as an electrical current, you will never be confused again. When your tap is turned off you get no water flowing through. With your amp if you have too much negative voltage on the grid you will stop the electrical current from flowing. This is known as 'over-biased' and the amp will produce an unbearable distortion at all volume levels. If you turn your tap full on you get a huge rush of water. If your amplifier does not have enough negative voltage at the grid then you will find you have an under-biased amplifier. This allows too much current to pass through the valve and will cause it to burn out quickly and you will lose punch and clarity in your sound. Daca nu stapanesti o notiune, nu raspunde doar de dragul de a o face. Ai sa starnesti rasete. Link to comment Share on other sites More sharing options...
panda Posted October 2, 2008 Share Posted October 2, 2008 asta cam asa este!ca sa intelegi ce este cu biasul trebuie cunostinte ceva mai serioase.important este de stiut ca de acolo se stabileste clasa de functionare a tuburilor finale.daca o sa invartiti de potentiometrul ala puteti sa patiti 2 lucruri;ori incepe sa sune prost,distorsionat si fara randament,sau o sa inrositi tuburile finale.reglajul se face in laborator, cu aparatura de masura si de oameni calificati,asa ca ar fi bine sa lasati joaca cu biasul. Link to comment Share on other sites More sharing options...
Jack Daniel Posted October 2, 2008 Share Posted October 2, 2008 Am schimbat lampile Groovetubes din Fender Hot Rod Deluxe cu JJ Tesla luate de pe www.eurotubes.com. Tipul cu care am tinut legatura m-a intrebat daca am umblat la bias vreodata. Nu. Mi-a trimis un set pt ampul meu (cu bias standard reglat din fabricatie). Sunetul s-a schimbat. Amp-ul e mult mai prezent. Nu cred ca m-as intoarce la Groovetubes. Nu-s un super-specialist. Iti spun din experienta mea. Prefer sa ma specializez in lick-uri, las electrica si electronica altora. Pt urechile mele doar suna sau nu. Link to comment Share on other sites More sharing options...
gombotz Posted October 2, 2008 Author Share Posted October 2, 2008 si eu intreb ptr ca am tot auzit de bias '' hot'' adica tuburile sunt 'fortate' sa zic asa si suna mai cald, dar au viata mai scurta, sau bias ''cool'' unde tuburile au viata mai lunga, dar sunetul este mai sters. Oare am zis ceva aberatii? Link to comment Share on other sites More sharing options...
FiveseveN Posted October 2, 2008 Share Posted October 2, 2008 Pai e destul de greu de explicat clar fara a intra in electronica. In primul rand se regleaza bias-ul pentru a fi "corect", i.e. lampile sa functioneze in parametrii normali (conform descrierii producatorului). In rest totul devine mai vag, pentru ca nu exista o reteta universala, tonul desigur e eminamente subiectiv, depinde de tipul circuitului si caracteristicile lampilor s.a.m.d. Link to comment Share on other sites More sharing options...
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