Just moved and now my speakers "hiss"

[Stonejaw]

Ok so I just moved into a new place and my Logitech Z-5500 now have a "hissing" noise on the speakers and a low rumble on the subwoofer when turned on and even when the volume is set to 0. The hiss and rumble is so loud that I can clearly hear it across the room. The hiss does not get louder when I turn the volume up though it stays constant no matter what. I have my whole system plugged in through a fairly decent power bar bur I dont think it cleans the AC. I was wondering if this is an AC problem or if something when funky with my system during the move perhaps I bumped something I dont know. I am using a Audigy 2 ZS btw. The hiss happens if I have the speakers working through digital coax or through 6 channel direct.

Will a AC line conditioner or filter help me or do I have a bigger problem?? Thanks!

 

[Bassyhead]

Are there multipin connectors for these speakers? Make sure they're plugged in securely.

 

[sjwaste]

Are any of the components near a fridge? I remember that in college, my fridge would interfere w/ my speakers even from across the room if they were roughly on the same plane. I had to elevate one or the other.

 

[LeoDioxide]

Depends on if it happens when your speakers are plugged in or when they aren't plugged in. If it only happens when you plug your speakers in, definitely a poor sound card thats letting stuff bleed through. If hissing occurs while not plugged in, the transformer is letting some bleedthrough into the speakers, or you're getting outside interference.

 

[Stonejaw]

Ok I have done some more testing last night and I found that my speakers make no hiss if I unplug the signal cables from the sound card, so I now assume it is comming from my sound card? It is and Audigy 2 ZS and I havent had this problem before the move but I dont know any suggestions on what it could be or what I could do to try to further troubleshoot this?

Thanks

 

[Dunnworkin]

Had this problem when I moved a working system to an office trailer a while back. Cleaning and reconnecting audio cables did not help, but noticed the noise almost went away when the speaker power supply was not plugged in.

Got lucky when an electrician that does some work for me took a look at it. Problem turned out to be two fold. First, I had the transformer plugged into a APC battery backup thinking it would offer better protection. Was told running 110V/DC converters on UPS's can cause static feedback. Plugging it directly in to a wall plug did lower the noise level some, but not completely.

Second, there was a problem with our inside electrical wiring. Don,t remember everything he did, but it was mostly just checking the continuity of the wall receptacles. Problem turned out to be a common ground wire was broken or loose in a wall receptacle somewhere. Fixing the ground connection and plugging the power supply directly in to a wall plug completely solved the problem for me. Only thing I hear now is the initial pop when turning the speakers on and off.

Hope this is helpful.

 

[oynaz]

Sounds exactly like bad wiring, probably poor grounding. I would check with a multimeter, or get an electrician to do it for you.