When no source but equipment is turned on is there still a hiss? I use a pc for my source with an asus essence stx ii 7.1 sound card with crown xls 1502 and 2502 along with an xti 6002 and two cerwin vega subs one being a cvx-21s and an el36dp, my speakers and only the cvx-21s when turned all the way up no hiss or sound if my pc is turned off. I'm not sure about the el36db i've never tested that yet but when i turn the gain all the way up it rumbles a little. Now when my pc is turned on even with the gain low the tweeters make a hiss noise up close while the cvx-21s no audiable noise except what it's suppose to be playing. So if there is no hiss when source is turned off it's the source itself that is causing the hiss, if it's a grounding problem it hums not hisses, it's normal for tweeters to hiss since they play so high but don't worry when being used that hiss is unheard at a decent volume level.
Speaker static/hiss?
I’m noticing a static/hissing sound from my speakers on all inputs and when the volume is all the way down. You really have to put your ears right up on the tweeter to even hear it. It’s not noticeable at all when the volume is tuned up just about 5-10%.
But I’d like to see if this is something I can rid myself of.
‘’I’ve got two dedicated 20amp outlets with two Audioquest 20amp outlets. All of the source gear is plugged into a Furman SPR-20.
Not sure what else I could do.