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????
Yes, it’s possible that eliminated the possibility of a ground loop. My continued thought here is this is all ground related, but I’m also concerned about 29 dB of wide open uncontrolled gain on the Sim. Correct me if I’m wrong @kingbr there’s no remote control with the Sim, correct? And there’s no volume control of any sort on it, yes? |
OK thank you kingbr for confirming. I know that some of these cable manufacturers charge an arm and a leg for some of their cables (which I will never pay for), but the construction of each, between manufacturers, is not always the same. Where one might put more emphasis on their shields, another may put more emphasis on the conductors carrying the signal (in balanced mode). Unless the cable manufacturer posts pictures of inner cable construction, you really never know what you’re getting until you try them, and how they will perform in your environment. Having already dealt with so much interference in the past (CB’ers, radio station RF, neighborhood ham operators, etc), I know that a well made shielded cable (like a Gotham), and a low impedance star ground system is always what’s needed in my audio systems, and audio systems that I build for others. For me, shielding takes top priority. Next on my list is (low) capacitance. I’ve already found that when I upgrade to a lower capacitance cable, I can almost immediately hear the improvement. I am also fortunate and thankful that I can make my own cables. |
Thanks again @dpop! I have always found Transparent cables to be more “my taste” if you will. I have used several others but there just seems to be something extra once I bring in the Transparents. I love the speaker cables and IC’s, however I don’t care much for their power cables. On that I’m strictly Shunyata. I have no scientific data to prove any of this, just my ears😬! The ground adaptor I ordered from Amazon arrived late today so I won’t have a chance to connect that until tomorrow AM. Also the 2 ground lift cables from Parts Express I ordered via the link you sent are arriving tomorrow…I’ll have an update on the Amazon one in the AM and will update also again after trying the 2 cables from Parts X…
So you mentioned Ned that high gain of the Sim amp. Might a 20db attenuator be needed? I did see a few of those while I was browsing?
|
