I agree with the two subs. Or even one good REL sub since you are using single ended. My speakers will play down to 25 hz and I still have two subs. I just bought a new car. One had a subwoofer option and the other did not. The sound is night and day. SVS will let you return your subs if you do not like it. 2- SB 2000 pros will probably blow your mind. If not they take them back.
My system is where I want it be and it sounds awesome...
Finished.....Goldenear Reference, Carver tube amp, Prima Luna Pre....Yggy DAC, 2018 Mac mini serving roon and Oppo 203...With the addition of the GE Reference, I’m no longer using subs...Very pleased. My wife is happy that the checking account will no longer be ravaged...Thanks for the help in selecting the components...