FIIL EQ settings

Parametric EQ corrections for 5 FIIL 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 FIIL house sound, by the numbers

Across the 5 measured models, the most common tuning is bass-heavy (4 of 5, 80 percent). Next most common: bass-light (1).

The model that needs the least correction is the T1X, with no band more than 3.6 dB from neutral. The one that needs the most is the Key, off by up to 8.3 dB before EQ.

All FIIL models