Believe me we are with you in hoping this all get sorted out.
DC Offset Blocker/Killer - where to buy in the USA
I have McIntosh MC8207, the first unit I bought from an authorized dealer came with a loud buzzing coming from the left transformer, and was replaced with a new unit which came with even a louder buzzing. The buzzing can be heard from 8 feet away. Then I was told to have install new 20 amp outlet that has its own isolated grounding.
That was done professionally by an electrician who installed two isolated 20 amp outlets, two 20 amp circuit breakers, two copper polls for grounding for each outlet, each outlet has its own neutral and power line. After all this done the buzzing sound was still there.
I was then told to buy a power conditioner which I did (Audio Quest Niagara) which was like $4000 and that did not help. Called back McIntosh and was told that I might have DC offset in my AC line and was told by McIntosh that I would need a DC Offset Blocker/Killer to which when I asked them where to buy one they told me to go on the internet and search to find one, to which I cannot find one.
This bothers me a little bit, if you as a company think that I have dc in my ac and i need a dc blocker wouldn't you need to sell one as well. I brought this amp to my friends house and it was the same no improvement, so my guess is that he has dc in the ac line as well.
So If anyone of you knows where to buy a DC Offset Blocker/killer please let me know, but even if this helps kill the buzzing wouldn't you guys think that this expensive somewhat hifi amp/brand should be silent from the factory. I mean this is two units in a row all purchased brand new.
My house is 5 years old, everything is brand new, the whole neighborhood is about 8-9 years old, my electrician says that I have perfect power coming to the house and everything looks fine.
Thank You
That was done professionally by an electrician who installed two isolated 20 amp outlets, two 20 amp circuit breakers, two copper polls for grounding for each outlet, each outlet has its own neutral and power line. After all this done the buzzing sound was still there.
I was then told to buy a power conditioner which I did (Audio Quest Niagara) which was like $4000 and that did not help. Called back McIntosh and was told that I might have DC offset in my AC line and was told by McIntosh that I would need a DC Offset Blocker/Killer to which when I asked them where to buy one they told me to go on the internet and search to find one, to which I cannot find one.
This bothers me a little bit, if you as a company think that I have dc in my ac and i need a dc blocker wouldn't you need to sell one as well. I brought this amp to my friends house and it was the same no improvement, so my guess is that he has dc in the ac line as well.
So If anyone of you knows where to buy a DC Offset Blocker/killer please let me know, but even if this helps kill the buzzing wouldn't you guys think that this expensive somewhat hifi amp/brand should be silent from the factory. I mean this is two units in a row all purchased brand new.
My house is 5 years old, everything is brand new, the whole neighborhood is about 8-9 years old, my electrician says that I have perfect power coming to the house and everything looks fine.
Thank You
- ...
- 225 posts total
Why won’t
tomiiv
return his amplifier to McIntosh for warranty repair? Because it would cost me more money to do so, I have to pay for shipping both ways which is not cheap, and I am not planning to spend a cent more because I am pretty sure nothing would get done.It looks like you’ve made up your mind to be unhappy, rather than to seek resolution. It appears that the only money you’ve spent on this so far was for electrical work performed by an unqualified contractor that was hazardous and did not meet NEC. |
Are there any repairmen who specialize in Mac's? I can see the OP's reluctance to send into McIntosh, all they are going to do is open the box and slap a label on it saying it is okay. Though it would cost some money having someone look at it, at least you know if it, indeed, has a problem. And, using that information tell McIntosh. Who knows? They might find the issue and repair it. B |
I have made up my mind about this brand not just this amplifier. To answer to @cleeds I have done only one outlet that does not meet NEC standards which was un-installed completely and is no longer in existence and everything else is back to normal, but the amp is still buzzing. The amp buzz has nothing to do with what I have done with the electrical it just cost me money that’s all, money can be made but the experience I’ve had so far with this brand alone is unforgettable and was unpleasant. After spending so much money and not even one phone call was made back to me that should tell you something. The amp just sits in the corner collecting dust and if you wanna buy it it’s yours for $5K |
- 225 posts total