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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
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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john_fink
140 posts
 
I have a MMF9 and had a somewhat similar problem. I called Roy Hall at Music Hall. The problem was in the tracking. You may have to fiddle with it a little beyond the suggested settings. Also, I recall Mr. Hall stating, that when given a choice, he listens in the MM mode.
vvrinc
323 posts
 
Owned the MMF-7 with the Eroica H. It worked perfectly in the MM input of my ONO. This cartridge is intended for use with MM input, absolutely not in the MC.

Best regards.
ghogman OP
16 posts
 
Thanks guys, when I get home ill try the MM setting and I am still going to dbl check with the protractor I ordered.
Ya know, even with the gurgled sound, it still sounded better than digital.. I’m foaming at the chops to get this right so I can mentally drift off into some real music.

I wish they still made current music in non digital format pressed onto good solid vinyl... At least we still have Classic Records!!
Thanks to Albert Porter or I would be locked into digital doldrums...
jependleton
155 posts
 
I had a similar problem with my MMF-7. Luckily, I bought it new from a dealer with 40 years of experience with turntables and 20 years of experience with Roy Hall. The cartridge turned out to be bad. Apparently there has been a high failure rate with the Eroica H. If the cartridge is aligned correctly and your phono stage is loaded correctly, then this may be the answer.
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