fix EQ settings

Parametric EQ corrections for 2 fix models, each derived from its measured frequency response. Pick a model for the full filter table, the curve, and how it compares with its siblings.

The Bespoke Edition (Leneo) measures dark, off neutral by up to 3.4 dB before EQ. The Event Horizon measures dark, off neutral by up to 4.7 dB before EQ.

All fix models