Polk Audio DB351

Features:

• 3-1/2 Inch 2-way Speakers (Marine Certified)
• Power Handling:
  • Peak: 210 watts per pair / 105 watts each
  • RMS: 70 watts per pair / 35 watts each
• Impedance: 4 ohms
• Dynamic Balance polymer/mica composite mineral filled cone is stiff yet lightweight for big sound and little distortion
• 12mm Liquid-Cooled Silk/Polymer composite Dome Tweeter with Neodymium magnet for clear, detailed highs
• Low-mass 2-Layer 25mm Kapton voice coil former is lightweight for high sound output
• Multi-hole mounting pattern and shallow depth for easy drop-in installations in most cars
• Durable butyl rubber surround won’t fall apart under the stress of extreme temperatures, sunlight or time
• Pole Plate Heat Sink promotes better heat dissipation for superior power handling and reliability
• Acoustically inert stamped steel basket
• Flat Spider for faster, longer excursion linear motion
• Flexible woven tinsel leads sewn directly into Spider for greater reliability
• Frequency Response: 90-22,000 Hz

Specifications:

• Series: db (Polk)
• Priced Per: Pair
• Speaker Size: 3-1/2 Inch
• Design: 2-way
• Tweeter Design: Dome
• Tweeter Composition: Silk-Polymer Composite
• Woofer Composition: Polymer/Mica Composite
• Woofer Surround: Butyl Rubber
• Peak Power Handling: 105 watts
• RMS Power Handling: 35 watts
• Sensitivity: 91 dB
• Frequency Response: 90 - 22000 Hz
• Impedance (Per Voice Coil): 4 ohms
• Shallow Mount Installation: Yes
• Top-Mount Depth: 1-1/2 Inch
• Bottom-Mount Depth: 1-11/16 Inch
• Cutout Dimensions: 3-1/8 Inch x 3-1/8 Inch