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MMF 7 help

I have just set up a slightly used MMF 7 and I have a sound issue.
I set up the tone arm to the manuals specifacations, the cart was already mounted and used from the previous owner.

I have it running into a Carver Classic tube preamp into the MC RCA jacks of the phono stage of the preamp.

I have used this pre before and it sounded fine.

I put on a Classic Records Sara M. and it sounds like she is "underwater".
So, I put on Stevie Ray Vaughn and same thing.

Its hard to explain the sound as any more than underwater. Kinda gurgly on mid notes. I dble checked all connections, it is grounded right, the stylis is clean and so on.

I dont know where to start on the troubleshooting.
ghogman

Showing 2 responses by sean

sean
6,231 posts
 
I agree that the cartridge could be out of alignment or damaged. The other possibility is that you are experiencing distortion from overloading the MC phono input. Since all circuits overload in various manners, it's possible that the "gargling" sound is a sign of electrical distress from this circuit.

What cartridge are you using and do you know the output level? Can you plug the phono system into the MM inputs if you have them and see what this does? Sean
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sean
6,231 posts
 
2.5 mv should be used in the MM input due to the output level. Problem here is that the loading in the MM input is probably not as well suited to your cartridge as the loading in the MC input. You may have to contact Sunfire to see how the phono loading characteristics can be altered. Sean
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