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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
kingbr OP
346 posts
 

Yes very interesting (or ironic/coincidental) about the Revel’s. I connected the Mac and the brand new Revel’s at the exact same time. Fwiw I have Performa3 208’s, 208C, and M105’s. Yes had to jump on that 30% off sale, couldn’t resist!

 

kingbr OP
346 posts
 

Yeah definitely not the Revel’s, mere coincidence…

kingbr OP
346 posts
 

I am going to disconnect XLR’s and try the RCA’s first thing in the AM. Then I’ll try connecting the wire for the ground between the Mac and Sim…

dpop
293 posts
 

I’ll try connecting the wire for the ground between the Mac and Sim…

I’m not expecting this to change anything, as there should be no difference in ground planes between the two pieces of equipment, since they’re plugged into the same outlet, but you never know, and it’s still worth a try.

If we’re actually able to eliminate the buzz between the Sim and the Mac, it’ll be interesting to see what buzzes or hums pop up when reconnecting your pieces of equipment to the Mac, but let’s cross that bridge...

illaheman's avatar
illaheman
39 posts
 

Definitely not the Revels! 😂

dpop..I admire and respect your effort here. I wish you lived nearby.
i feel the same way about wanting perfection, but everything is great when I’m listening and it doesn’t affect the music. I’m still thinking it’s a cabling interference that I can’t track.

. I’m hoping you trouble shoot this out for both of us. My local stereo shop and I talked a lot about this for quite awhile, they wondered if it was a situation of my pre-amp. It’s a foreigner and they wondered if the xlr slots were wired differently. I switched to the rcas only, it didn’t make a difference in the buzz.

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