Legacy Audio Focus SE to XD upgrade

I have a pair of original Legacy Focus from the late 90s which has 3-12" woofers and for years I wanted to upgrade something. Not because they were lacking really but I have them in a huge room and I use the system in stereo and home theater. So instead of changing the speakers I decided to add a powered a sub. I got a Rythmik Audio FV15HP and have had it a few years now. Although you may THINK your big cabinet speakers are producing the bottom octave, they really aren't. I use my receiver to handle the sub crossover and I think its currently crossed at 60 or 80hz and the difference is staggering. The big servo sub takes a lot of load off the speakers and main amps (Emotiva mono blocks) and it was easy to integrate and the sound is amazing. Its the longest I have ever had any speakers and I still love my Focus

edonsmith,  I got a chuckle out of your discovery, "Although you may THINK your big cabinet speakers are producing the bottom octave, they really aren't." Yup. Nearly all speakers regardless of size can benefit from subs that are complementary and well set up.

Just noticed your post.  I have the Focus SE and it is the latestest iteration.  I am in the process of considering the HD upgrade with the Wavelet.  I believe without the Wavelet there will be minimal benefit.  Legacy indicated they can do it in one day for $2000 and the cost of the Wavelet.

Have you done yours?