In a bit of a quandary as I’ve been out of the home theater game for 15 years and a lot has changed. I had a Definitive Technology Powerfield 1500 Subwoofer at the time. We had kids and I took a long break, which included selling the sub. Fast forward, the kids are grown and I’m finally building the media room I’ve always dreamed of. I’m looking for a replacement for the sub and I want something equally as powerful (house shaking) as the Powerfield 1500. Ideally I would find something under $300 used, hoping for some solid recommendations from the folks here. Thanks in advance!