Thank you for your suggestions.
DC is probably the culprit. I live in the USA (Michigan) any suggestions for a ready made DC blocker to use?
You know, it does hum more in the evening when we are watching a movie, so I will plug in the TV elsewhere tonight. Does it matter if the TV is plugged in but not turned on?
Thanks Elizabeth, yes, I have checked it well. Unfortunately the transformers are buried underneath several circuit boards. I am using Stillpoints ultra SS footers underneath it so I may try some softer footers.
It seems to get louder when everything is on including a 85" UHD Samsung that draws quite a bit of current. It may be that I am overloading it. So, I will remove the subs from the Niagara.
Any Niagara 7000 owners out there that can comment?
Well I just received the Emotiva DC blocker and it did nothing. In fact with it plugged into the wall and the Niagara plugged into the Emotiva DC blocker the Emotiva unit got super hot!
So I'm back to square one.
The Audioquest rep says that my Whole House Surge protector (In my Breaker Box) may be the culprit.
Before I get into that, is there any thoughts or opinions on this?
Thanks for your comments.
The Niagara can draw a tremendous amount of wall current. Other products that I have tried before the Niagara also got very hot. So this is normal, but I thought at least the buzz/hum would disappear to show that I was on the right track.
Whole house surge protectors are in constant contact with the electricity flowing through the house and are activated or the circuit is deactivated when a surge occurs.
Yes I have unplugged the Samsung and it is not the culprit. The Emotiva is rated for 15A. It did nothing to eliminate the hum/buzz, so I sent it back today.
I must say that Audioquest has not been much help. I can't get past the area rep who is more argumentative than helpful, and I am getting more excuses than help.
According to him, If I send it to Audioquest, he say's they will change the Furutech IEC inlet back to the original and combine the 2 high power outlet banks to one. He claims the problem lies with my incoming AC power. But I have never had this problem before getting the Niagara 7000.
So, to send the unit to Audioquest $$$ plus return shipping $$$ plus the cost of their service $$$ may not correct the problem.
Thanks for the reply.
Inside the Niagara is layered multitiered circuit boards and the isolation transformers are underneath all of that. As far as I can tell everything is tight.
I tried using Fo.Q underneath the hood and placed pieces on top of every cap and electrical device I could and that actually made it worst!.
So I removed it all except underneath the cover.
There is a canister inside that is filled with Audioquest proprietary compounds that are supposed to silence noise. That is where most of the buzz/noise seems to be coming from.
Yes I checked with the seller and he said it was dead quiet.
The power cord I am using is a Audioquest Hurricane high power, but I have tried other cords.
I plugged the polarity tester into one of the Niagara outlets and everything showed proper. And I doubt that I wired the IEC incorrectly, I do not take electrical and the connections made lightly. Believe me I double checked.
I have been able to reduce the buzz/hum considerably with moving some of the AC plugs into different banks. Trial and error, PITA.
I now also have the JL subs plugged into the Niagara in bank 2 via utilizing a Deep Core. The Niagara still buzzes, but at a much lower level, actually tolerable.
Thanks, I think the key is to balance the power with the outlets and within the 3 separate zones. Sometimes that means mixing the digital with the analog (gasp!).
The reason I tried so hard to make it work is because the Niagara adds such a dynamic boost to the audio music it is like night and day from plugging directly into the wall outlets.
I am extremely disappointed in Audioquest service help.
First thing they want to do is to blame the customer. " Customer must have damaged the unit with the IEC upgrade". So, no warranty, no service, no help.
Not a good business model, in my opinion.
Thank you, and all others for the help.
Thanks for the help and ideas.
I do own a Synergistic grounding block that I am currently not using (yet) because I didn’t want to have too many variables. But that is next up.
No, I have not taken it to a friends house because its heavy (90lbs.) and I don’t have any friends...
I will try turning off the breakers in the house soon when the wife’s not home (she creates too much static)...
At the moment, I think with the balancing of the plugs in the Niagara outlets its about as low as its gonna get. And quite frankly, it seems that I am ok with that.
Well Dustin didn’t call me back so I called Audioquest again. This time he was there and said he was not aware of my message.
Well Dustin also read me the Audioquest script stating that, " since I changed the IEC it is considered a modified unit, therefore no warranty and if they service the unit it would have to have the IEC returned to the original state before they would check it. That cost and all other service work would be at my cost". Ok, I get that, I did a bad thing changing the IEC inlet...
I told Dustin that when I disengage the power correction feature on the Niagara and leave the unit in standby it does not hum. So he said, " then don't engage the power correction function". (That reminds me of an old doctor joke...) The power correction feature is a big part of the Niagara 7000 advantage over other power conditioners!
I have owned several PS audio power plants, Shunyata, Synergistic and many others and I have never had a problem such as the hum/buzz that I am getting with the Audioquest Niagara 7000.
So, I’m still not sure about sending this heavy unit across country ($200 min shipping both ways) and plus the unknown repair costs ???
What if after I spend a lot of money and the response is again (as the original Audioquest area rep stated earlier), " it must be something in my electrical grid " call your Electric company" ?
Thanks for that info. I’m not giving up yet, at least until Audioquest has a chance to look at it. I owned many PS power plants. The last one was the former top of the line.
To me, the Niagara 7000 does something that other power conditioners do not do. That is; increase the available power when the amps need it. I first started out with a Niagara 1000 and was impressed what it did for my home theater equipment, especially the Denon receiver.
With my 2 channel the Niagara 7000 creates what I would call that "boogie factor". Music comes alive with unlimited dynamics. Its really impressive.
I'm now in contact with Garth Powel, so, here’s to hoping Audioquest can get this sorted out!
I have always been interested in electronics. Heck, I started when I was about 10 years old building Heathkits. It has always been a passionate hobby for me.
The Furutech NCF IEC connectors are the best available in my opinion, so why not use the best? Especially, if all my other components will be plugged into the unit. And, I did not buy the Niagara 7000 to be used as a "flipper". No, my intent was to get the best out of the unit and keep it.
I have 3 dedicated 10 gauge lines, each terminated with Furutech NCF outlets. Defeating the power correction circuit is like turning off a turbo charger, why would you want to? I’m sure a lot of the cost in the Niagara was for this feature.
BTW, the plan is for Audioquest to convert the unit back to stock form but they do have a few upgrades in mind for the buzz/hum.
I agree with you, Audioquest should have concentrated on providing the least noise generated from their unit first!
But again, with the supposed fix they plan, hopefully it will become a keeper.
Believe me I have tried everything, including the expertise from Audiogonner’s on this thread. I have also read all the info on the Audioquest site. And, I have been able to reduce the hum. Hopefully, now with Garth Powel (the lead engineer on the Niagara 7000) involved Audioquest will resolve the issue.
Thanks for sticking with this. I have read the attachments over and over and I honestly don't understand it.
Here is what Garth said they have done to my Niagara
"The PCB-1060 has two parts removed so that the redundant sense circuit we discussed will not operate. So, you can use all for high-current outlets, and decide to use all or a portion of the transient power correction circuit via the position of that rear panel switch:
Full circuit is engaged
Partial circuit is standby
(less mechanical noise if the harmonic distortion on the incoming AC line is in
excess of 10%)"
I trust Garth but it is a little confusing.
Any clarifications you can provide?
Well I received the Niagara 7000 back today. I hooked up all the power cords and stood back, to a drum roll (inside my head)…
The buss/hum has been reduced by about 99%! Whew!
It is still (very faintly) there but is now extremely tolerable. All in all with shipping and repair costs (about $400) plus it took a little over a week and a half to be returned I am glad I did it.
I compared my original pictures of the inside of the Niagara's to the now present condition. Other than returning the IEC inlet to the original, I'm not sure as to what was actually done.
Whoa! Not so fast, I jumped the gun...
After I pushed my rack back into its original spot (closer to the wall behind it) the Niagara started to buzz again. WTH?
The only thing that pushing the rack back did was to move the electrical cables closer together, there is nothing else near the rack or wall behind it.
Something is affecting it. Is it possible the close proximity to the other cables is causing the Buzz?
Thanks, but Yes, I can hear the hum/buzz.
If the Niagara buzzes very little when the rack is pulled out but does buzz louder when it is pushed back, something must be causing it. There is a JL sub near the rack, I wonder if that could be something affecting the Niagara? (hard to believe)
This is very frustrating. I’m going to move the rack out again and see if I can find the culprit.
Well, I thought it would be appropriate to update and conclude the Niagara hum/buzz thread. Thank you all for your help.
There will always be some form of buzzing with this unit. I do have all of my 2 channel equipment plugged into the Niagara 7000. That includes (2) JL Audio subs, tube mono block amps, preamp, dac, streamer, CD player, QOL, and a 85" 4k HR TV. (Which draws a lot of power)
Though the buzz is still frustrating, (but, now only heard within a foot of the unit) the sound quality using the Niagara is impressive. As I stated earlier, with it comes great dynamics, the music jumps from the speakers!
So, the question whether to buzz or not to buzz, I guess I choose the buzz.