2. amps-preamps
  3. 180029-149900

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
fredrik222
522 posts
 

I would assume so, but I am certainly not an expert on gain matching, or McIntosh. 

kingbr OP
346 posts
 

Regardless very insightful and I sincerely appreciate all of your advice/support-so thanks man👍

willgolf
937 posts
 

I had the same issue with my amps.  I tried everything and even hired an electrical engineer to come out and test everything.  I bought the $79 Ebtek HumX - problem solved.  You are not supposed to plug your Power conditioner into HUM X.  The amps direct to HumX to the wall outlet

kingbr OP
346 posts
 

Thank you @willgolf! Just read your reply went right to Amazon and ordered it! So you mentioned you used this on your amps, but I know my issue is my preamp. What I’m going to do is either plug the McIntosh into the Hum-X and then plug the Hum-X into my Furman Elite, or plug the McIntosh into the Hum-X and then go to a different wall outlet thus separating the McIntosh from the circuit altogether. Someone suggested I try going direct to the wall outlet with the McIntosh. I figure trying that with the Hum-X might do it🤞🏻!

Thank you so much for this reply! Great to hear it solved your problem! Hopefully it’ll do the same for me. Otherwise St John the Evangelist down the street will be getting a call😂

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