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Grain/Distortion heard on Inner 1/4 of LP

I've been adjusting this and that with my new Clearaudio Emotion/Virtuoso setup, and I thought I had things tuned in pretty well, but now all the albums I listen to exhibit pretty bad distortion when listening to the inner 1/4 of an LP. Up until that point, everything sounds clean and superb. I've meticulously realigned my cart several times and adjusted overhang to the point where I don't think it could be any better when using the naked eye. I also raised my VTA to assist in dynamic and bass response.

I was told to solve this problem I need to adjust my VTF, but I've been messing around with that too and can't seem to get the distortion to go away. I've played with anti-skate as well, but the distortion is coming evenly from both channels, so I don't believe that is the issue.

Have any of you experienced this problem? Is this a cartridge alignment issue, VTA, VTF, etc.? What have you guys done to resolve this?

Thanks
jwglista
jwglista OP
206 posts
 
I printed out several charts using 222mm as the setting. I was able to find that from Clearaudio's website. I will try using Lofgren B. Is there any particular reason for using this? Why would this resolve inner groove distortion?

As far as VTA, I have that spot on. I've used a ruler to measure the accuracy.

I purchased this setup from a member on Audiogon, so I don't have the option of going back to any dealers.
ducatirider
111 posts
 
you will always get some arc distortion of some kind with a pivoted arm. what you are doing is trying to minimize it as much as possible. Once you print it out you will see that the Lofgren B grid is innermost. From your description, I think that is where your alignment is off. since you bought secondhand, there is the possibility that your unit is defective. use lots of light and magnifying glasses. there is a certain satisfaction in empowerment learning this on your own.
jwglista OP
206 posts
 
Why would the alignment arc be different on Lofgren B as opposed to Lofgren A?
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