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.
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Suboptimal gain structure FTW. Somebody has some pro audio experience and a good mentor. I had both and the two key lessons I learned about signal chain were grounding (hum) and gain structure (noise and headroom). And both are seriously ignored in most hifi systems. If either are problematic in your system, the fix is to properly set your system up, not shop for new pieces that happen to match your system needs. |
+1 @panzrwagn +1 @mulveling |
Interesting post for me. I just added two Parasound A21+ amplifiers to my system and am having the same hiss at close proximity to the speakers (2-3 inches) with no source material playing. When I installed the amps I didn't have any sound coming through from my sources and no hiss either. Spent two or three hours trying to figure out what I did wrong, As a last resort I turned the pre's volume all the way up and got a faint signal, so I turned the gain up on the amplifiers channels to give me reasonable volume. I've never had amps with adjustable gain before and it would never occur to me that turning it up too much might have started the hiss. I have some headroom for the levels that I listen at, so I will try turning the gain down a little and see what happens. BTW - I had been using Holmz #2 suggestion. It works. Thanks - Jim S. |
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