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:
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(newest, current model)
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(previous model, replaced by Polk Audio db521)
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Average Customer Rating is 4.5 out of 5 stars:
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Average Attributes Rating:
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4.6 |
| Value |
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4.5 |
| Features |
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4.4 |
| Design |
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4.5 |
| Usability |
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4.8 |
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Quick Comparison:
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Most Helpful Customer Reviews:
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Review by
John from Edmonds, Washington
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First off I need to say that I installed these in my stock BMW. BMW uses a very low powered amp and loud tweeters. I could never really hear any difference with these Polk speakers. I believe that they would be excellent had I hooked them to an amp and disconnected the stock BMW tweeters.
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Review by
Audio freak from Candler, NC
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Got a pair about a week ago. Haven't hooked them up yet but just the look and feel of them make me think that they are very durable and will sound fantastic. I will repost when i install and hear them.
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Review by
Joe from Indianapolis, IN
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While these 5.25" speakers do sound great, I mean really good for their size, the 6.5" sound twice as good if not more. I am running 4 of these 5.25" and 2x 6.5", and a 12" MTX sub, powered by a 6 channel MBQuart amp. The 6.5" are what make this system and if I was just running 4 of them, it would sound much better than the 4 x 5.25" and 2 x 6.5". They are much louder, have mid range base, and just a cleaner sound. If all you can fit are these 5.25" then go for them, they do sound great and are only beat by JLAudio of the same size. These POLKS are amazing speakers.
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Review by
tom from indiana
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i bought these as replacement speakers for my TJ and could not b happier. Hooked them up to a small amp, and the sound couldnt be better for the price. and being that they are marine grade, a little splash from the hose every now and then after a little play time, wont hurt either.
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Review by
Bacon from Nj
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Awesome speakers. They are only 2 way so you need more to fill out a complete system. But great power with a 45w rms per channel amp. Never ran it without an amp. But sounds great.
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