Fluctuations of the loudness of speakers???


I've just discovered something that has me concerned. Sometimes while listening to music, either of my two speakers (that are probably not broken in yet)suddenly loses volume (not all the way but still very noticable)...it's like they lose juice suddenly. It's more noticable at lower volumes but happens at higher regardless. I don't know if to blame speakers, or cables, or if my power outlet has a problem with my 250 wpc amplifier. Sometimes a simultaneous "crackling" sound occurs. I have no idea if the problems are related but at keeps me up at night :-( Any ideas greatly appreciated...
branislav

Showing 5 responses by branislav

Cables are all brand new but the tube does apply since I have Musical Fidelity Nu Vista amplifier that supposedly contains some tubes. I wouldn't even know how to go about getting let alone replacing one...
Do you guys think a bad tube would probably be responsible for the volume fluctuations rather than an occasional "crackling" sound? With rock music hard to notice, but put on some ambient music, and it's more noticable...thanks everybody for their (even future) inputs and ideas.
It seems like I'm going to have to borrow an amplifier for a day from somebody (nobody I know has any) and see if the problem continues...then I can apply the process of elimination. What a drag...I'll be sure to post results when I figure it out or even as I get closer. Thanks everybody for their suggestions...
Another observation, problem is more common when the system is cold than warmed up...
Well, it's not my speakers...just borrowed generic receiver and none of the problems described above occured. The music sounds like from behind a curtain though, all the details are lost. Made me realize that apart from the possible problem with my amp (tube?)it blows the generic Best Buy stuff out of water :-)