I am not sure of I should put this in sub, amp, or box but hopefully someone can help me. I bought a. Orion 2500d and a dd9512, I also built my own box to put it in. Now it was my first time building a box, but go some reason the dd will only play real lows. On the song "thumb through that check" by rocko it plays the lows parts real low, but the hi hits sounds like crap, my kickers sounded better. What could cause this, also how much should the speaker flex? Or will I know when it is too much?