IMHO "tight" bass refers to the system's ability to cleanly differentiate [in a mono mix] between a double bass plucking and an underdamped bass kick drum beating at the same time without mixing the two up to any degree. many systems can't do this as well as they ought.
What is Tight Bass?
I’m confused. Speaker size with a large woofer…can it be tight?
is it about efficiency? Amp power? Electrostatic?