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Hissing sound coming from tweeters

Right now I'm experiencing a hissing noise coming from the tweeters on my Klipsch RF7II's, and can't figure out what is causing the noise. It's almost like a white noise that is there when the amplifiers are powered on and is not affected by changes in volume.

My system consists of an Oppo BDP-83 blu-ray player, Ayre K-5xe preamp, and two Emotiva UPA-1 mono blocks. My cables are Audioquest King Cobra and Audioquest Emeralds. I would greatly appreciate any help resolving this problem. The hissing sound is very annoying. Thanks.
cfaille
stanwal's avatar
stanwal
3,147 posts
 
Try turning off everything but the amps and see if you still have it; if you do it is the amps. If not turn on the other components in order and see when you get it.
cfaille OP
23 posts
 
It's the amps for sure, I just don't know why they're making my tweeters hiss, and I want to eliminate it. The hiss comes on and stays on when I power up the mono blocks. The pre-amp never actually turns off. Do you think the mono blocks are a bad match for the rest of my system, or can I fix this problem with some sort of line conditioner?
josefm
53 posts
 
To verify its really the amps, you need to disconnect the interconnect connected to the amps (do so with the amps off of course). If the 'hiss' is still there, then you are hearing the noise floor of the amp's circuit.
Would a conditioner reduce this noise? Maybe, depends on the conditioner.
COuld also be a mismatch between speaker and amps...speakers being too sensitive for your amps.
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