Damn! Does it still occur with listening at night? Maybe it’s possible something outside your house but in your electrical grid has changed. If it was me I’d try a balanced power conditioner (like Underwood Core Power or Equi=tech) or a power regenerator from PS Audio. Other than that I got nuthin, but you’ve got my sincere sympathy and hope someone smarter than me here can help you figure it out.
Help with hiss
Hello Friends,
My speakers have developed an audible hiss that I am trying to chase down. The hiss can be heard from across the room and while music is being played. Sometimes, the hiss is pulsating and sometimes constant. It occurs at all hours, perhaps less so in the early morning. Sometimes there is no hiss at all and everything is silent. It is an intermittent issue that is unpredictable.
My speakers are powered by mono block amplifiers. Both speakers exhibit the exact same behavior. The monos are plugged directly into the wall outlet. I also plugged them into a PS Audio AV Power Center with no relief. I changed power cords with no relief. No other piece of gear is on, although all are plugged in and some are in standby. I turned one mono off of course stopping the hiss in that speaker. The other continued to hiss. In reverse, same result.
This is not a “hum” (like from a ground loop). It is the same hiss that you can hear with your ear next to the tweeter but much louder.
I’m happy to answer any questions at all to help me resolve this. Thank you in advance.
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@soix Thank you so much. This is definitely a drag. It does happen at night, but my listening may start before the hiss starts. Once the hiss starts, it’s pretty obvious. Even my wife noticed it. I had feared that it might be something in the grid. My neighbor had recently built a wood shop. When I heard the hiss, I asked him if he was using any of his shop tools (sometimes the hiss sounds like a saw starting up). He denied using anything in the shop. It also occurs when he’s not even home. @ditusa Since you ask, I’ll assume it matters….Odyssey Audio Kismet Reference monos and Odyssey Audio Kismet monitors. Flawless performance for years. Thank you! |
You said that your amps are plugged directly into the wall outlet. What else is on that circuit? Have you tried unplugging everything else that's on that circuit. I installed two dedicated circuits for my gear. One is used for the power amps and the other for the rest of the gear. Noise was reduced to virtually zero. Good luck. |
- 51 posts total