2. amps-preamps
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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
 

Holy $h!t! Wow I just saw all this @russ69 thank you! 
 

@dpop thank you isn’t even nearly enough-I just ordered the last 2 @ Parts Express via the link you sent. I just got home and heading to bed and saw this. Without even looking into it I went and ordered the last 2😂, even after reading that article from Upscale that @russ69 referenced (very powerful article man-thank you). Have to get to bed but will follow up later after some sleep…

 

Thank you all and @dpop your generosity is off the charts…I’ll pm you later, thank you👍🏻 for your incredibly generous offer!

miglos's avatar
miglos
8 posts
 

try to use caps on the RCA ro XLR, they help to avoid buzz, my own experience. Then everything becomes dead silent, but you don’t need to overdo it, you need to play with them a bit, listen and find your best solution.

kingbr OP
346 posts
 

Hi All, 

 

So at this point having ordered the 2  Pro Co XLR adaptors referenced by dpop I'm thinking holding off until they arrive before trying anything else at this point. But I may still try the RCA's and see if that does anything? I think the gain on the XLR between the Sim and the Mac sounds like it could be the ticket (but I have absolutely no idea as this is way beyond my limited knowledge here) but hearing the phrase "2 components not playing nicely together" several times this sounds like exactly what is meant? If this is the issue and it seems so many have this kind of issue it's weird that you don't hear much more about it when matching separate amps to separate pre's? You would think this would be publicized more about using caution or being aware of this potential issue, no?

 

@dpop just PM'd you...

 

What a whirlwind this has become and @russ69 and @dpop I honestly would describe it is a combo hiss/buzz. Here I am now listening closely like a critical listening session to describe it, LOL!!! That's awesome-still keeping the sense of humor especially after reading that article again from Upscale and the new shot of enthusiasm and hope provided by the incredibly selfless @russ69 ​​​​@dpop! 

 

Question for @russ69 , why would I need the XLR RCA adaptor in my situation? Wouldn't the XLR 10 db attenuator pad attached to each of my XLR cables work?

russ69's avatar
russ69
3,520 posts
 

Wouldn't the XLR 10 db attenuator pad attached to each of my XLR cables work?

Yes, it would. 

russ69's avatar
russ69
3,520 posts
 

BTW, I had this issue with my Mac402 amp. The attenuator did the trick. 

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