McIntosh MC451 mid-hum (tube fed). No hum on tweeter, or on solid-state side. Anyone?
Curious if any MC451 owners had this issue? I just set these up - and the hum is there.
What is odd? Zero hum from the solid state side or the tube fed tweeter .. and the other solid state amps on the power - zero issue. If it helps - the mid is a Md: Neodymium Magnet System, Ø 150 mm
Tried a different outlet (15amp vs 20amp), 3 different power cords - standard, mid-quality, high-quality - in and out of the Niagara 5000 conditioner.
Very bizarre. When I remove the XLR it is still there, so it can’t be the XLR.
Been trying the different settings on the back (Crossover, etc) with little impact.
Perhaps it is a burn-in thing.
@erik_squires this amp has 2 sides - 150W tube, 300W solid state. That is why I am trying to figure out with someone who has one. If they have the same thing. I have done a bunch of power swaps with cords, different outlets, conditioner - no conditioner. |
Thanks @erik_squires |
