I have a sony sawm500(150w, 12"), I am not entirely happy with it and am interested in DIY. I have already built a sealed box for the sony which was an improvement. Now I am wondering if I could replace the sony driver with a Titanic or Shiva. The sony amp is rated for 150W into 6ohms. If I built a vented enclosure with the new driver and sony amp would this be much of an inprovement? Can the sony amp drive the Titanic or Shiva? Any help is greatly appreciated. Thanks in advance.