Sub crossover question

[BUMP MY RIDE 10+ year member]

The higher my lpf cut off frequency(70 - 80hz) the more low end I lose at least with my set up is this normal ? If i cut off lower(40 - 50hz @ 24db) the low end low notes play with way more authority but the punchy bass notes are missing..//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

Sub = 12 jlw6v2 ported jl spec tuned @ 32 running off of 500 watts rms.

Click to read more...