My 15 didnt come with a sub, and while it wasnt bad, it annoyed me to not have one. My 2 door seemed really hit or miss which was strange depending on what I had loaded up or if the seat was in. I ended up getting a kicker hideaway powered sub before the alpine one came out and I am very happy with it. I had it on the front panel of my tuffy deck, then under the back seat, and now it lives under the driver seat since I have my arb twin under the passenger seat. It sounds great, but its something to get used to a vibrating seat haha.