Retrofitted and amplified these in my rear package shelf in place of the factory Bose 8's that were there. They provide a great midbass sound to the rear fill that normally people would lose by removing these speakers in favor of letting the trunk subs breathe. I tried it and like the sound better with the 8's still in the deck. I was running some 8" American Bass Neo's but they were missing something that these NVX's provide a bit better and thats the entire midbass sound. NVX did well with these.