The Leq curves for the vinyl and CD versions are in close agreement.

(note: these are unweighted Leq curves, in contrast to the A-weighting used
for the Spring Hill Fair curves.)

The only significant difference is the divergence above 2 kHz,
increasing to about +4 dB at 10 kHz, and continuing to increase.

This would tend to make the CD sound "brighter" than the vinyl
(or conversely, the vinyl to sound "warmer" than the CD).

This could be caused by any one of (or a combination of) the following
(and this is not an exhaustive list):

1. High frequency boost added to the master used for the CD
2. Vinyl playback system error (RIAA network incorrect, high frequency rolloff, cartridge nonlinearity)
3. Vinyl mastering error (RIAA network incorrect, cutter head rolloff)

(#2: playback linearity has been verified with vinyl test records, and the errors measured
that way actually are on the bright, not dark, side of flat, indicating a greater divergence
than shown above; e.g., the CD high frequency EQ boost is even more than shown.)
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