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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
270 posts
 

@couger4u Thank you so very much for this reply! Honestly man it does help, more than you know. I had my very first “true” listening session this morning with my new speaks semi broken in (and the first session with the Mac quarterbacking the system) and like your experiences it sounded magnificent. It honestly made me forget the buzz was there. Because like yours, it is very faint and cannot at all be heard anywhere except ear to tweeter from 2 inches out and in. Fortunately my listening spot is much further out, LOL!

I just feel/felt my OCD needed to be sure I tried everything I could and honestly I really am there. Sure if I come across anymore suggestions I’ll try, but in the meantime I’m going to get back to focusing on the sound. Honestly thank you for this reply. Empathy and just knowing I’m not alone and that there are others who were able to move forward with this issue helps immensely! Sure I’m OCD, but I think adding the 5 brand new speakers at the same time as introducing the Mac gave me such high hopes and when the very first thing you hear is a buzzing, it’s like, well you know…

 

Thank you @couger4u…sincerely my friend..

kingbr OP
270 posts
 

You know I also had a Leviton whole house surge protector installed last year as well. Then a week later had the dedicated 20 amp circuit for the HT rig…I figured I’d be safe as kittens from any outside dark forces trying to infect my rig😂🤷‍♂️…

dpop's avatar
dpop
292 posts
 

@kingbr

How would I connect a wire between the grounds on the amp and Mac? I don’t really see anywhere on either to connect a wire?

Looking at the on-line manuals, there’s a GND screw/connection on the back of each of the units. Connect a wire to each (from one to the other).

kingbr OP
270 posts
 

Thank you again for all of your time @dpop! So just like a normal speaker wire between the 2? No experience with this kind of thing? 

dpop's avatar
dpop
292 posts
 

So just like a normal speaker wire between the 2?

Correct, but I'm still very interested in hearing the results of the other tests I mentioned.

Whilst I didn’t try the cheater plug specially, the fact that the Hum-X didn’t work leads me to believe the cheater wouldn’t have any effect. 

Sorry, I can't agree with that @kingbr  - two different concepts. If it were me, I'd still try the cheater plug. You really have to eliminate all options here. I think they're only like $3.  

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