Quote:
Originally Posted by Old School
After looking for a nice Mark Levinson number 30.6, I have finally found one. It completes my Levinson reference front end. It replaced my 360S. It was an awesome upgrade. I never knew that bass could be so detailed!
My system consist of:
No 32
No31.5
No 30.6
No 336
B&W 800 Diamonds
My question is, the power supply of the number 30.6 has a low frequency hum to it. I have tried changing outlets. I moved my cables around some. There is no sound from my speakers with the system on, dead quiet. Any other ideas to try to get rid of this hum? I can't hear it when the music is playing. But when my listening room is quiet I can hear it......
I love the mark Levinson 300 series!
|
That sounds like a transformer. This is a mechanical hum induced by some sort of resonance between wires or the core.
A very common problem especially if gets older and the resin (if used)!dries up.
Often the hum varies over time as a DC component present on your mains line can influence it.
This could be a tricky one to solve, as this kind of hum is stubborn.
A wooden cabinet can amplify this as well