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Everything you love about Polk’s Dynamic Balance technology—that rich, clean, full-range sound—is built into the marine-tough, yet ruggedly sophisticated, DB+ series. And with its universal fit, it can be installed in any vehicle: Automobiles, motorcycles, boats, ATVs—you name it.

  • High performance audio upgrade that delivers signature quality sound that goes beyond OEM factory systems
  • Marine certified with IP65 rating (water- and dirt-resistant) and tested for salt-fog, UV and humidity
  • Polypropylene and UV tolerant cone with waterproof inner and outer surrounds
  • Simple drop-in installation for any vehicle including cars, boats, ATVs—you name it
  • Zero tweeter protrusion and reduced mounting depth for a precise fit
  • Dynamic Balance technology offers a rich, clean, full-range sound
  • ¾”, 20mm Tweeter ensures clear, balanced mids and highs
  • 100 Watts at Continuous Power; 300 Watts at Peak Power




  • High performance audio upgrade that delivers signature quality sound that goes beyond OEM factory systems
  • Marine certified with IP65 rating (water- and dirt-resistant) and tested for salt-fog, UV and humidity
  • Polypropylene and UV tolerant cone with waterproof inner and outer surrounds
  • Simple drop-in installation for any vehicle including cars, boats, ATVs—you name it
  • Zero tweeter protrusion and reduced mounting depth for a precise fit
  • Dynamic Balance technology offers a rich, clean, full-range sound
  • ¾” & ½’, 20mm & 13mm tweeter and midrange ensures clear, balanced mids and highs
  • 150 Watts at Continuous Power; 450 Watts at Peak Power



  • 5.25" Weather Proof Full Range Coaxial Marine Speakers
  • Power Handling:
    • Peak: 300 watts per pair / 150 watts each
    • RMS: 150 watts per pair / 75 watts each
  • Recommended Power Range: 10 - 37.5 watts RMS per channel
  • Polypropylene Cone
  • Treated Cloth Surround
  • Top-mount Depth: 2.2"
  • Cutout Dimensions: 5"
  • 4 ohm impedance
  • Frequency Response: 80-20,000 Hz
  • Sensitivity: 89 dB