Based on our exhaustive testing, it's clear that Velodyne's new Digital Drive Plus series of subs deliver as promised and even exceed some of their own output claims made to us. You stick a robust 15" driver in an inert sealed enclosure with a hulking power amp and masterful servo and compressor, and you've got the receipt for good subwoofing which very few sealed competitors can compete with both in sheer output and pristine fidelity. The DD-15+ has proven to be a worthy successor to the venerable DD-15 that started the whole Digital Drive series nearly 8 years ago. The hefty price tag is about the only downside to this fabulous product which the end user must decide if it's worth forking over the cash to don the Velodyne name in their theater room. If I were their competition, I'd be worried that Velodyne has just put most of them in checkmate with this very impressive line of well engineered Digital Drive Plus subwoofers. Highly recommended! Discuss "Velodyne Digital Drive DD-15+ Subwoofer Review" here. Read the article.