Recently I bought a 94 Acura Leyend, with an excelent Bose stereo, but with medium adjusted bass, and up, there is a very annoying noise in al speakers, as crak crak, that is decresed but not elimitated if I get out the basses.
I hope my poor english can be undertood by someone that can give to me a solution.
thanks in advance.

 

It sounds like your speakers are old and are not working proerly anymore. I would recommend replacing them with some aftermarket speakers that are made of higher quality.

 

Bose home speakers are one thing, but car audio? doodoo. Same thing with 92 legends, they have pioneer gold speakers that are horrible. If your looking for ultra clear sound look into some Boston Accoustics. If your budgeting I would get a pair of Rockford Priemier 6x9's for the back and a pair of 6.5" in the front. Would also recommend base blockers for the front (there about $5 ea. at a car audio store). This way you can still drive fast with the windows down and hear everything.