Check the input L&R cables of the TT. If you put your hand around the neck of both of them, and the hum decreases or disappears, then you have a problem with the cable shielding, or the core fibers of the either the left or right input are broken. How old is the table?? Also check out condition of output cable from the P-2 to your pre-amp. Jim
HELP Sudden Phonomena II Groundloop Hum
Hi. I have a Musical Surroundings Phonomena II Phono amp and a nuded Denon DL-103R which sounds great. I was planning to send the Denon to Soundsmith for a retip. In the meantime I purchased a Nagaoka MP-200 MM cartridge to hold me off until the retip was completed. It arrived today and when I reset the input load switches to 50K and gain 40db to match the Nagaoka I suddenly heard feedback hum (the buzzing noise a PA system makes). It gets louder as the volume goes up. I played with the connections on the cartridge and nothing changed. Then I adjusted the load switches and that affected the hum but it also affected the sound quality, dramatically. I then put everything back to the Denon mode and the noise disappeared. What really kills me is that even with the noise I heard a better sounding Nagaoka than the Denon.
I have never had feedback noise buzz in the past. This is new and began today as soon as I adjusted the dip switches on the back of the Phonomena II. Any suggestions on removing the noise is highly appreciated.
Cheers.
I have never had feedback noise buzz in the past. This is new and began today as soon as I adjusted the dip switches on the back of the Phonomena II. Any suggestions on removing the noise is highly appreciated.
Cheers.