I have a 10" JBL sub for my HT setup. Normally i would leave it alone but i recently got a good deal on a new JL audio sub and it is also a 10". I have looked at the construction of the JBL woofer and im not really impressed but i have some experience with HT and listened to other setups way out of my budget and its decent for what i payed.(aunt's brother owned a high end shop for many years). The construction of the JL sub looks far better than the JBL and they are the same size and i have already checked to see if they would fit. My question would be is of course is it worth it. I have a pioneer sending the signal to the JBL sub amp and i believe the amp on the sub is 350 watts. If it will sound better i have no problem purchasing another JL sub for the car like i was originally gonna do.