Polk Audio db521

$90.00 Released March, 2007

Product Shot 1The Polk Audio db521 are a pair of 5.25” coaxial car-audio loudspeakers composed out of dynamic balance polymer/mica composites and wrapped in butyl rubber surrounds configured to withstand heat, moisture, and time.

Where to Buy

loading.. Loading latest prices from ProductWiki...

Although the db521 has a larger frame than its counterpart, the db401, it in fact provides the same maximum power handling (135w) and nominal impedance (4ohms). However, the db521 does offer a lower maximum frequency of 60Hz (versus 85Hz). In addition, the Audio db521 features a .75” liquid-cooled silk/polymer composite dome tweeter, a pole plate heat sink that promotes improved heat dissipation, and a muscular ABS grille that is computer optimized and based on MOMO designs. Cited as offering high-quality performance and long-lasting durability, the Polk Audio db521 is considered an incredible car-audio solution offered at a reasonable and affordable price.


  • Mid/Woofer: 5-1/4" Diameter (13.34cm) Polymer/Mica composite
  • Tweeter: 3/4" Diameter (1.91cm) Silk Dome Tweeter
  • Overall Frequency Response: 60Hz-22kHz
  • Nominal Impedance: 4ohms
  • Power Handling (continuous): 45w
  • Power Handling (peak): 135w
  • Efficiency: 93dB
  • Top Mount: 2-5/16" (5.87cm)
  • Bottom Mount: 2-7/16" (6.19cm)

User Reviews (0)

Add Pros & Cons

Comments (0)

What's on your mind? See more ProductWiki Talk

You may also like...