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Polk Audio db521

5-1/4" 2-way Speakers (Marine Certified)

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$71.24

with warranty

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Speaker Features:

  • 5-1/4" 2-way Speakers (Marine Certified)
  • Power Handling:
    • Peak: 275 watts per pair / 135 watts each
    • RMS: 90 watts per pair / 45 watts each
  • Impedance: 4 ohms
  • Dynamic Balance polymer/mica composite mineral filled cone is stiff yet lightweight for big sound and little distortion
  • 19mm liquid-cooled silk/polymer composite dome tweeter with neodymium magnet for clear and 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
  • ABS Grilles, computer optimized and based on exclusive MOMO designs
  • 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: 60-22,000 Hz
  • Authorized Internet Dealer
  • 90 Day Sonic Electronix Warranty

Priced Per Pair

Specifications

Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
Height
The height of the item, measured from top to bottom, in inches.
Width
The width of the item from left to right (side-to-side) measured in inches.
Color
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating

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Browse 1 question and 34 answers
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Why did you choose this?
Sonic Electronix Store
Superior quality from my polk db621 so i thought this would be a great addition to the front dash in my 2005 Jeep Wrangler TJ.
Brad B on Nov 25, 2016
Good match of RMS wattage to my receiver plus my experience with Polk sound and product quality has been positive.
Michael F on Dec 2, 2015
They are marine certified which makes them great for use on motorcycles
Gerald S on Feb 6, 2016
I have a pair of Polk Audio MM651s in my motorcycle and love the sound. Need a 5-1/4" set for the trunk and want to stay with the Polks as they are truly a quality speaker.
James K on Nov 11, 2015

Product Summary

Manufacturer

Model Number

db521

Weight

4.50lbs

Internal SKU

ls-db521-obc268257-2

Internal Product ID

119525

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Polk Audio db521