nvs tower speakers

I was wanting to get some first hand experience from some of you who either have, or have heard any on the addiction series speakers for the tower. I have not been a big fan of tower speaker in the past, due to them being really load in the rear of the boat, and not really accomplishing the task of letting the rider rock out while riding. I used to own the boss 530, and even know I got them sounding great, they just did not have the range to hear behind the boat. All I really care about as far as tower speakers go is to be able to get my groove on while riding. Does anyone have actuall experince while riding with these speakers, and can just one pair do the job. I have the illusion x tower so I really only want to use on pair.