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????
If the Titan is more than 15 years old, there could be a possibility the power supply filtering capacitors causing the noise. You can disconnect all the input cables from the Titan, power it up and see if you can still hear the buzzing noise. |
IMO, both @dpop and @russ69 give you great recommendations, if the XLR ground lift adaptoer works, it will eliminate the hum/buzz noise. Otherwise, an 10dB in-line XLR attenuator will reduce the noise 10dB (since the noise is not affected by the volume control). https://en.wikipedia.org/wiki/Ground_lift https://www.parts-express.com/Inline-XLR-Attenuator-Pad-10dB-240-412
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