Low pass filter

my question is that I used the low pass filter topology sallen-key with tda2030 and ne5532 to use as 2.1 system for computer and when tested the sound still coming out from the woofer , is that right or am wrong that should hear only the low frequency ( boomy ) and the result isnt what what I wanted , is there way to move around to get the deep bass ???? and stop the music coming out the woofer ?????


thank you all