That is a VERY personal decision. I for one, think it does. To have a barely acceptable system, I'd add a 10-inch sub in a box. To be happy, I'd have to replace all the speakers, send 50W to each with the proper crossover sections, add 2x10 inch sub or 1X15 and off I go. There is no right answer, I’d advise to go to the dealer and listen to it..