The Pulse 15 is best suited for use in a very large box, at least 200 liters. In a box the size of yours, or what I think is the size of yours as you haven't posted it, it's going to be boomy. My preference for a reasonably priced fifteen for average size ported cabs is the LaVoce WXF 15.400. It's not boomy, and it has higher sensitivity and mechanical power capacity than the Pulse 15.