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Dynamics varying with track position.

I’m finding that dynamics and timbre improve as the cartridge moves toward the inner 1/2 of the album. Running a DL 103r.  Aligned on my 303 arm with Regan paper protractor.  Also a slight emphasis on the left channel. Tried realigning/ checking overhang and I’ve heard no change.  Also checked the alignment with the Ortofon guide. Any one have a thought on the cause or remedy for this?
thanks. 
Lou
128x128lwal22
roberjerman
4,319 posts
 
Lowest distortion will be at the two null points - where the stylus is MOST tangent to the grooves. This applies to ALL pivoted arms! The emphasis on the left channel could be a problem with the anti-skate mechanism on your tonearm. Try adjusting it for more or less force while listening. 
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cleeds
6,002 posts
 
I agree with @stringreen - it sounds like improper setup. A paper template is simply insufficient. The best and most accurate gauges use a mirror to align not the phono cartridge, but the cantilever/stylus itself. Using anything less than that is a hit-or-miss proposition.
lwal22's avatar
lwal22 OP
76 posts
 
Thanks for the insight. I’ll check the alignment with a dB systems available to me. If I don’t get improvement I’ll spring for a mirror alignment tool. 
The azimuth adjustment is tough with the rega arm. Any reason to suspect it’s off?
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yogiboy
5,744 posts
 
+1 anti-skate problem. Try readjusting it!
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lwal22 OP
76 posts
 
Alignment checked out with the DB so I  began trying antiskate changes. The issue cleared up entirely.  Oddly the best result comes from nearly 0 antiskate on the Rega.  I suspect the magnet/ slider is seriously miscalibrated. Since it’s sounding balanced now, I’ll leave that alone.
thx  
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