I've been wanting to put a sub in the boat for a while. I plan on putting it in front of the drivers seat and was wondering if there is a special sub box that you can buy that will fit well.

http://www.bestbuy.com/site/Fierce+A...&skuId=8780456.

I'm looking for the cheapest thing possible that will sound good. I'm not looking for thundering bass just something that sounds good. I already have two amps on the boat, one for the main speakers and one for the tower speakers so I will just put the sub into one of these and best buy has a sale on subs right now...