Headshrinker and Czarivey, I think you may have "possibly" solved my problem with the same cartridge; (however my AT is 120E, not Eb which I assume is the newest version). My table is a newly acquired vintage Thorens TD-145 which has been refurbished with some minor upgrades. I have set tracking at the recommended optimal force of 1.4; I also tried 1.5g last week.
Today's session, tracking at one 1.4g, the highs sound consistently tinny, and the bass and mids less full (though accurate) than when I was running this cartridge with a Rega 3-24 (whose tone arm is better than the TP-60 on the Thorens) I sold the Rega with the intention of getting out of analog. I guess there is sucker born every day, and I think I am one of them.
I am not a happy camper, but will try the czar's suggestions of tracking at 1.8 or 1.9 to see the difference in the sound, and also to see if 1.8 provides a noticeable improvement in the sound. I think the AT120E is a good cartridge, but considering Thorens reputation based on TD-145 model and other tables in the TD series, I probably should use a better cartridge like AT 440MLb which I have read that its frequency range is much wider. It also uses a "micro line' stylus, and the magnet structure supposedly will enhance the sound quality over earlier model of the 440ML.
The Thorens table sounds great, and is remarkably quiet, but I would think twice about buying anything vintage refurbished, upgraded, or whatever I am not trying to sound like sour grapes, but buyer's remorse is a bitter pill to swallow.
Czar, if you have any other tips, or recommendations, let them fly. Thanks, Jim