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Leben cs300xs electrical noise in tweeters?

Hi!, I have a Leben cs300xs amp and I like the sound, but I discovered that the amplifier produces a little "electrical" noise in the tweeters of the speakers ( philips miniwatt with 91dB) if my ears are in tweeter... This is normal?.... Another owners of the Leben with the same experience?.... Thank you! 
thebalance

Showing 2 responses by thebalance

thebalance OP
4 posts
 
Hi!, in all inputs, the noise is like a " RRRRRRR" "fast vibration electrical", is posible that are the 50 hz noise?... Is posible to eliminate this noise, or are a typical of tube amps?.... The another noise, the hiss, is very little and up and down if I move the volume, I think that is a normal thing.... 
thebalance OP
4 posts
 
Hi, yes, I talk with the dealer and says that is a normal little noise of the tube amps. Is not a problem of tubes, the noise is also with another tubes, and the noise is the same in the two speakers. When the music play I do not hear the noise, but it bothers me to know that the noise is there! 
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