I just ordered the 70 Hz low pass crossover from Parts Express. I am going to check out how it works with my current (crappy) sub. The crossover on my current sub is very poor. It lets alot of high frequencies leak through to the sub. If I run frequency sweeps with the sub's crossover set to 50 Hz, the sub is still playing strong at 200 Hz. It is noticeably weaker at 200 Hz than if i set the crossover higher but IMHO it is way too much to be able to get the sub to blend.

There's no place like 127.0.0.1