Polk Audio DB651

Features:

• 6-1/2 Inch 2-way Coaxial Speakers (Marine Certified)
• Power Handling:
  • Peak: 360 watts per pair / 180 watts each
  • RMS: 120 watts per pair / 60 watts each
• Recommended power range: 10 - 60 watts RMS per channel
• Will fit most 6-3/4 Inch locations with included speaker bracket
• Lightweight dynamic balance polymer/mica composite mineral filled cone woofer
• Marine Certified, perfect for use in marine vessels
• 3/4 Inch Liquid-Cooled Silk/Polymer composite Dome Tweeter
• High Pass and Low Pass Crossover Filters
• Low-mass 2-Layer 25mm Kapton Voice Coil former
• Multi-Hole Mounting Pattern
• Shallow mounting depth
• Muscular ABS Grilles (Based on MOMO Designs)
• Durable Butyl Rubber Surround
• Pole Plate Heat Sink
• Flat Spider for faster, longer excursion linear motion
• Flexible Woven Leads sewn directly into Spider for greater reliability
• Polarized Nickel Plated Terminals on PCB terminal board
• Stamped Steel Basket finished in rustproof Gun Metal Gray
• Frequency Response: 40 - 22,000 Hz
• Sensitivity: 92 dB
• Nominal Impedance: 4 ohms

Specifications:

• Series: db (Polk)
• Priced Per: Pair
• Speaker Size: 6-1/2 Inch (also mounts in 6-3/4 Inch w/ included brackets)
• Design: 2-way
• Tweeter Design: Dome
• Tweeter Composition: Silk-Polymer Composite
• Woofer Composition: Mica Injected Polypropylene (MIPP)
• Woofer Surround: Butyl Rubber
• Peak Power Handling: 180 watts
• RMS Power Handling: 60 watts
• Sensitivity: 92 dB
• Frequency Response: 35 - 22000 Hz
• Impedance (Per Voice Coil): 4 ohms
• Shallow Mount Installation: Yes
• Top-Mount Depth: 1-5/8 Inch
• Bottom-Mount Depth: 2-5/16 Inch
• Cutout Dimensions: 5 Inch
• Speaker Grilles: Yes
• Number of Speakers: 2