Yes, it's worth all the bothering and sorrows and despondency which you will undergo through during its setup. I have AE Aegis Evo 3 speakers which go down to 40 Hz (-3 dB) and 36 Hz (-6 dB).
I added a second hand REL Quake sub and it absolutely transformed my enjoyment of music and brough it to another level. But integrating it into the system was a pain. I did it eventually, by ear first. The result was ok. But then I learned how to use software Room EQ Wizard and I found even a better place for the sub using a mike and this program. The result became excellent.
I also use the VST Oxford Sonnox EQ in Foobar2000 to smooth the remaining irregularities in the frequency response of the sub and the woofers (20-100 Hz).
I added a second hand REL Quake sub and it absolutely transformed my enjoyment of music and brough it to another level. But integrating it into the system was a pain. I did it eventually, by ear first. The result was ok. But then I learned how to use software Room EQ Wizard and I found even a better place for the sub using a mike and this program. The result became excellent.
I also use the VST Oxford Sonnox EQ in Foobar2000 to smooth the remaining irregularities in the frequency response of the sub and the woofers (20-100 Hz).