Polk Audio

Polk Audio Db521 Speaker - 45 W Rms - 2-way - 4 Ohm - 5.25" (db521)

(No reviews yet) Write a Review
Usually ships the same or next business day. In stock at our FL, OH warehouses.
Calculated at Checkout
Stock Update:
02/19/2024 10:23:23 PM PST
Stock Update:
02/19/2024 10:23:23 PM PST


This item is brand-new, factory sealed.

5-1/4" 2-way cars speakers (pair)
Dynamic Balance polymer/mica composite woofer with butyl rubber surround
3/4" pivoting liquid-cooled silk/polymer composite dome tweeter
Neodymium tweeter magnet
Kapton voice coil
built-in 2-way crossover network
ABS wheel-design grilles
stainless steel mounting hardware
certified for marine use
power range: 4-45 watts RMS (135 watts peak power)
frequency response: 60-22,000 Hz
sensitivity: 93 dB
top-mount depth: 2-3/8"


Additional Information:   
  • Low-mass 2-Layer 25mm Kapton Voice Coil former
  • Muscular ABS Grilles
  • Pole Plate Heat Sink
  • Flat Spider
  • Flexible Woven Leads



Physical Characteristics
Product MaterialRubber
Speaker Diameter5.25"
Cutout Diameter4.69"
Limited Warranty1 Year
General Information
Brand NamePolk
Manufacturer Website Addresshttp://www.soundunited.com
Marketing InformationOur new 2007 db Series is better than ever with superior looks and even better sound. And we've done all that at prices that make high performance affordable to everyone! The db Series works well in OEM factory systems, as well as with high-powered after market head units and component power amps. The db Series delivers classic Polk Audio performance and durability like never before.
Product TypeSpeaker
Product Namedb521 Speaker
ManufacturerSound United
Manufacturer Part Numberdb521
Product Modeldb521
Product Seriesdb
Technical Information
PMPO Output Power135 W
Minimum Frequency Response60 Hz
Maximum Frequency Response22 kHz
Sensitivity93 dB
Crossover Type2-way
Impedance4 Ohm
RMS Output Power45 W
Crossover SupportedYes

View AllClose

Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
View AllClose

0 Reviews

View AllClose
Polk Audio Db521 Speaker - 45 W Rms - 2-way - 4 Ohm - 5.25" (db521)