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

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😂🤷‍♂️…

@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).

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? 

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.  

Hi @dpop so give the cheater a try, I actually had ordered one on on Amazon but the Hum-X arrived first so once that didn't work, I didn't bother trying the cheater. But I'll give it a try. One thing my amp is a C19 20 amp connection, I'm thinking trying the cheater on that would not be a good idea?

 

@dpop I can't not thank you again for taking the time to help me here. Thank you...I'll try the cheater on the Mac...