Hello friends,
I am going to upgrade my audio in my car. I just got the JBL GT5 A604 amp. I need your valuable advice on what kind of subwoofer unit I have to go for. I did look in to most of the audio upgrade discussions here, but was not convinced because nothing is specific to subwoofer unit (Subwoofer and the box).
I don't want to be heard very loud outside. I just need good sound in side

.
Please tell me about damping. Should I go for that? What If I don't go for damping in my car?
Please go ahead and give me your ideas.
Thank you.
Willy.S