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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
plumptonvinyl
49 posts
 

Hi @kingbr

may I ask what other components are connected to the Pre Amp?

 

thanks

plumptonvinyl
49 posts
 

Try disconnecting the Audioengine B1. Take it out of the system completely and see it the buzzing has stopped.

this may be causing a grounding issue.

fredrik222
522 posts
 

Not to point out the obvious or anything, but you didn’t have this issue with the Marantz, but do with the Mac, sooooo, it is the mac. Many others have documented this, take a look and Jay’s audio lab on YouTube, or Shane Lee’s Trinnov reviews, both had this issue with some (pre)amps, Shane specifically calls out Mac. 

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jallan
313 posts
 

My guess is that you are connected to a cable tv and or an internet cable and are getting ground issues. They are spooky. Might use a cheater plug on the Mac to see, and if it helps, then I would suggest a hum buster transformer plug for the Mac or else put a ground loop transformer in line with the cable (latter has worked best for me, they are about $15).

 

 

jetter
3,035 posts
 

Echoing the above, try "a cheater plug on the Mac to see, and if it helps".  To eliminate the same in my system I installed a Jensen Iso-Max VRD-1FF 75 Ohm Inline Digital CATV Isolator Hum Eliminator between the internet cable and Xfinity cable box and it worked like a charm.

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