Key Features and Benefits:

• Rich. deep bass
  Delivers thunderous sonic output and powerful low-frequency response wherever you go.
• Space-saving design
  Slimmed down form factor reduces the need for oversized subwoofer enclosures for a look. that goes virtually unnoticed. – but a sound. that doesn’t. Fits in any enclosure or application.
• Dynamic Balance technology
  Enjoy a rich. clean. full-range sound with the Dynamic Balance technology. engineered into every DB+ speaker. Rigorously developed by the talented Polk Audio engineers. whose passion rests in the principles of great sound. Dynamic Balance technology features non-resonant materials. so you get extremely clear highs. mids and lows no matter what you’re listening to.
• Marine certified
  The DB+ series is IP56 rated. so it’s dirt- and water-resistant. It also has been safe for salt-fog. UV and humidity. A big part of that marine certification also means. that each speaker has a non-corrosive plastic grille. a polypropylene UV tolerant cone. waterproof inner and outer surrounds. and stainless steel mounting hardware. ensuring. that it’s fully protected against the elements.
• Polypropylene UV tolerant cone
  Enjoy the peace of mind knowing each speaker cone is built to last. whose clean and polished look won’t discolor or degrade over time while giving heavy low frequency sound the high-performance it deserves.
• Waterproof Santoprene surround
  This attractive high-performance material maximizes throw with its ultra-flexible. ultra-durable properties – and prevents the elements from entering the speaker unit. Plus. it combats the harsh effects of boat cleaning agents.