Was it always this way or did it happen recently? Did you add any new appliances or light dimmers, etc. in the house or change anything else in your system? This is a head scratcher and any audiophile’s nightmare, so I hope someone here can help you solve this.
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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- 51 posts total
@soix Thank you. Excellent question and something I forgot to include. I’ve owned this system in its current iteration for a few years now. This hiss started maybe 2 or 3 months ago, but I lose track. The only new “thing” I’ve added to my home is a conversion of a kitchen ceiling light from fluorescent tubes to LED. Fearing this may have cause it, I turned the light off but the hiss continued. It also does it in the bright of day when no lights are on. I’ve also studied if the hiss appears when the refrigerator cycles on. It does not coincide, and again, I’ve had all the same stuff for years.
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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. |
- 51 posts total