Low buzzing through speaks


Hello All,

 

Need some serious help here. So I just (upgraded?) from a Marantz AV8802A to a McIntosh MX122 preamp. I also just got brand new Revel Performa3 speaks all around (5 channel setup). I disconnect everything from the Marantz and then into the McIntosh, connect the speaks and I have a faint buzzing through all 5 speakers (that was not there previously). I have everything plugged into a Furman Elite 20pfi power conditioner which is plugged into a dedicated 20 amp circuit. My power amp is a Simaudio Titan HT200 5 channel. This is not going through the Furman but directly into the other outlet on the same 20 amp line. I even tried plugging the Sim amp into the Furman to see if that helped-no change faint buzz is still there. I have unplugged just about everything, and the buzz is still there. It is very faint and does not get louder when I turn up the volume. Again it is faint and you have to put your ear up to the speaks to hear but it is definitely there. I have tried so many things and nothing gets rid of it. It is not my cable box (I did have that issue previously with the Marantz but as soon as I unplugged the coax from the box it went away so I just bought a coax loop eliminator connected the cable to that and noise was all gone) as I unplugged that and started there.

 

Any help would be so sincerely appreciated????

kingbr

Do you have an old home? You may have some "DC offset" issues with your AC.

Emotiva makes a CMX-2 (?) at around $150 and it fixes it.

Amps with toroidal transformers tend to pick it up more.

Thanks @ianrmack  for replying. My home is older, built in 1974. But that buzz was not there previously. I checked out the Emotiva piece, but how would I integrate that with the Furman Elite? I have 2 powered subs, my preamp, my DAC, cd player, cable box, Brennan B2 (this is how I listen to music as I have all my cd’s ripped to this unit), DVD player, and an Audioengine B1 blue tooth plugged into the Furman?

I’ve talked to the folks at Crutchfield and Emotiva and they basically said if it’s that low and you can’t hear it from the listening position to just live with it as it’s not something worth going crazy over. You really have to put your ear within about 4-6 inches of the tweeter to hear it…🤷‍♂️