2. amps-preamps
  3. 1099866598

Problem with line noise from Phono preamp

I'm hoping someone has had experience with this problem and can help me: I've been trying to connect my turntable to my B&K AVP3090 preamp using use an outboard phono preamp. I've tried 2 different outboard phono pre's with the same results - they play ok, but there's a very noticable AC line noise issue.

The 2 units in question are a Rolls VP129 tube phono pre, and a Music Hall MMF Phono Pack. Both units are powered by similar 12V AC power transformer.

My turntable works fine through my Rotel RC1070 (which I sold recently), and when I connect it to the B&K through an old Adcom GFP-1 preamp.

Can anyone help with this? thanks in advance.
bdgregory

Showing 1 response by isellstuff

isellstuff
99 posts
 
Your Left, Right, and Ground cables are HITTING each
other! I had the SAME problems with 3 different turntables! You need to seperate them from each other
higher up, and MAKE SURE that NO OTHER CABLES,
are hitting them! That`s what worked for me.
No problems now!
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