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Where is my problem ?

I have a Transrotor Fat Bob TT with a Graham Phantom II arm and a ZYX Airy3 cartridge which is set up as well as I know how. My LAMM LL2 has dual volumne control so when I turn down one channel vs the other the left sounds slightly more congested or not quite as sharp and clear as the right especially on say, a trumpet hitting high notes.

Where is my problem likely to be? The Phantom lets you adjust lots of things like Azimuth, VTA, anti-skate. These are at the recommended settings. I've tried adjusting these but can't get the sound fixed.
128x128jyprez
newbee
4,767 posts
 
Try switching the tubes from channel to channel on your pre-amp. It's possible one of the tubes is responsible for your problem. If after you switch the tubes your problem remains in the left channel at least you will know it is not the tubes in the pre. BTW, I thought the Lamm was a line stage, what are you using for a phono stage?
marakanetz's avatar
marakanetz
5,473 posts
 
Sometimes newer vinyl of the same recording fixes the problem too. Maybe this vinyl had been played too much.
manitunc
795 posts
 
Do you have a fozgometer? with it, you can easily check to see your channel balance and crosstalk and adjust azimuth to reduce crosstalk between channels.
quincy
356 posts
 
James,
I would recommend that you borrow or purchase a good quality MONO recording and try changing your volume while it is playing, as you described above. Stereo can create the effect you describe just due to the nature of the recording. Also, I recommend you purchase the Cardas Frequency Sweep record. It has many tracks dedicated to trouble shooting and will degauss your cartridge and clean the stylus as well.
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