sounds like your dad was a cool guy.
I have a servo sub as well, use it for music only in a small room. Love it, most accurate sounding sub I have had for music. Had it paired with various small bookshelf speakers, never happy, ended up with a set of 8" studio monitors with cabinets large enough for low tuning (I think 35 hz?). Finally sounds smooth. Part of my point was, there's a mentality that as long as the speakers can play to the crossover point, anything below that is a waste so let's use tiny woofers. I understand the theory but in practice, tends to either sound wimpy, have a dip somewhere, or you end up crossing the sub higher than you want and it is localizable.