Exceptional Quality and Versatility
Step up your vehicles audio performance with Polk Audio's revolutionary db521's. Cutting edge technology has allowed for an efficient speaker that has ability to accurately reproduce music like you have never heard before. A precise balance of materials including the Silk/Polymer Dome tweeter and Mica Cone woofer enable smooth roll-off and quick response at any volume. The rubber surround adds to bass response as well as increases the lifetime of the speaker under any conditions. Being marine certified, the Polk DB521's will surprise you with its versatility and ability for use in many applications. The high-efficiency loudspeaker means less power is necessary for the same quality output. The revamped db Series delivers that perfect Polk Audio performance and durability like never before.
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
- 1-year SonicElectronix.com warranty
Priced Per Pair
Product History: |  |
| (newest, current model) | |  |
| (previous model, replaced by Polk Audio db521) |
|
|
Average Customer Rating is 4.5 out of 5 stars:
Share your thoughts with others:
|
|
Average Attributes Rating:
| Durability | | 4.5 |
| Value | | 4.6 |
| Features | | 4.4 |
| Design | | 4.5 |
| Usability | | 4.8 |
| what's this? |
|
|
Quick Comparison:
|
|
Most Helpful Customer Reviews:
|
Review by
Curtis from Walnut Creek, CA
| Overall |
|
| Durability |
|
| Value |
|
| Features |
|
| Design |
|
| Usability |
|
|
These are one of the best speakers you can buy without getting into components or needing to run an amp to them to make them loud. They are very crisp and have no distortion when the music is up louder. I would definitely buy these speakers again.
|
|
Review by
Jeff from Chino CA
| Overall |
|
| Durability |
|
| Value |
|
| Features |
|
| Design |
|
| Usability |
|
|
Sounds Amazing and works great!
|
|
Review by
tj from Cuyahoga Falls, OH
| Overall |
|
| Durability |
|
| Value |
|
| Features |
|
| Design |
|
| Usability |
|
|
I recently changed out the sound system on my 08 Harley Ultra Classic. I put in a set of the Polk db5251 components in my fairing. They sounded so clear I just knew I needed to get a set of these for my rear speaker pods. Installation was a little tricky. Thanks to Sonix and their line of spacers I got them to mount. The db521 are powered from the factory radio and the db5251's plus my Polk MM DVC 8 inch sub are being run off a rockford fosgate pbr300x4 amp. These polk speakers and subs not only surpass the Hog Tunes speakers I had they are so much clearer and put out more volume and the suckers are not even broke in yet. I now have a sound system that handles it all. Thanks again Sonix and their staff for helping me with sane pricing and great shipping.
|
|
Review by
NorthernDad from Hazelton, BC, Canada
| Overall |
|
| Durability |
|
| Value |
|
| Features |
|
| Design |
|
| Usability |
|
|
Got these speakers to replace stock kia speakers. Ended up keeping the stock speakers because these ones have terrible bass output. They were great for full range, almost making music sound 'live' - everything was good but the bass, so they had to go.
|
|
Review by
lalsr from hunlock creek pa
| Overall |
|
| Durability |
|
| Value |
|
| Features |
|
| Design |
|
| Usability |
|
|
Plain and simple. Just a great speaker. I used them on my motorcycle fairing. I used 4 speakers with a jvc power unit cd player and being they are marine grade i don't worry about the rain.
|
Customer Service
