Buna ziua, am un amplificator vox ac4 tvh si problema ar fi ca nu prea are bas.
Am gasit pe mai multe forumuri straine urmatoarea modificare care ar aduce un plus pentru bas: "[...] Cap C5 is unusually small, at 4.7nF. Upping it to 22nF (use 400v SOZO Mustard.) opens up the low end nicely, without spoiling the trademark Vox chime. C5 is just to the right of the volume control, and a 400 volt Sozo mustard cap fits nicely, stood on end. Parts cost is only a couple of bucks. 22nF is a median value. It improves the bass without affecting the distortion very much. Crunch fans might prefer a 10nF. People looking for warmer clean tones can take it a step further by sticking with 22nf, but also upping C6 to 47nF. However, modding both caps will take the distortion out of Vox territory- the resulting woody, fat breakup sounds more like a tweed Champ. [...] Increasing C4 to 470pF will improve the range of the tone control. Simple mod, and once again, parts cost is minimal. [...]" link: http://www.tdpri.com...p/t-311460.html
Nu ma deranjeaza daca sunetul ar deveni mai curat (ba dimpotriva). As vrea sa fac modificarile acestea, dar nu am cunostinte despre electronica si nu stiu de unde si ce model exact de condensatori ar trebui sa cumpar. Cu montatul nu ar fi o problema pentru ca stiu o persoana care se ocupa cu asa ceva. Ii rog pe cei care se pricep sa imi spuna de ce condensatori as avea nevoie si de unde i-as putea cumpara (eventual niste linkuri). Am atasat doua poze cu amplificatorul si una cu schema. (La C6 nu lipseste ceva, sau asa ar trebui sa fie?)
Multumesc mult.