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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
ghogman OP
16 posts
 
Will do, Ill start there and let you know... Thanks!
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
>
ghogman OP
16 posts
 
Goldring Eroica H, high output Moving Coil
Response: 10 Hz to 30 kHz
Channel Balance: within 1 dB
Channel Separation: 25 dB
Output: 2.5 mV
Compliance: 18 mm/N Lat., 18 mm/N Vert.
Cartridge Mass: 5.5 g
Tip Moving Mass: 0.60 mG
Shape: Fritz Gyger type II fine line

I didnt put it into the MM of the phono stage. I have decent volume level, but the gargling sound is in there. I ordered a protractor. I hope thats all it is, I would hate for the cart to be bad :/
dan_ed
2,451 posts
 
I'll wager Sean is right on the money. I have not found any low ouput MC that will work well with the arm on MMF 7 because most of these cartridges are low compliance and the Pro-ject arm does not seem suited for low compliance cartridges. I would bet you have a high ouput MC since that is what the MMF 7 ships with.
ghogman OP
16 posts
 
It is a high ouput MC. Should I use the MM input then on my pre? I only have MM and MC. No in between inputs at different resistance.
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