Polk Audio db521

Power range: 4-45 watts RMS (135 watts peak power) Frequency response: 60-22,000 Hz Sensitivity: 93 dB Dynamic Balance Polymer/Mica Composite Mineral Filled Cone is stiff yet lightweight for big sound, little distortion. Marine Certified Polk db Series speakers are built tough to withstand the toughest environments so they are perfect for use in boats of all types. That's why Correct Craft offers Polk Audio speakers in their award-winning Nautiques ski and wakeboarding boats. 19mm Liquid-Cooled Silk/Polymer composite Dome Tweeter with Neodymium magnet for clear, detailed highs. Low-mass 2-Layer 25mm Kapton Voice Coil former is lightweight for high sound output. Kaptons high melting temperature (725F/400C!) ensures high power handling and kick-butt reliability. Muscular ABS Grilles, computer optimized and based on exclusive MOMO designs. Durable Butyl Rubber Surround wont fall apart under the stress of extreme temperatures, sunlight or time, for years of the great Polk sound. Pole Plate Heat Sink promotes better heat dissipation for superior power handling and reliability. Flat Spider for faster, longer excursion linear motion. Flexible Woven Leads sewn directly into Spider for greater reliability. Rock solid, acoustically inert Stamped Steel Basket finished in rustproof Gun Metal Gray. Stainless steel mounting hardware. One year parts & labor more

Price Range:$54.39 to $89.99 | 3 stores
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14 Reviews
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1-10 out of 14

From: Crutchfield
Posted: Jul-08-2009

These Polks Rock

I just installed these Polk db521's in the front doors of my '07 Accord and all I can say is wow! These really pick up the highs as hear a lot music. I have these along with 6x9 rear Alpines being driven off the stock head unit. When the folks at Cru

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From: Crutchfield
Posted: Mar-11-2009

'00 Jeep Wrangler

I purchased the combo of db 4 x 6 for the dash and 5 1/4 for the roll cage and couldn't be happier with the crystal clear rich sound they provide; at this time I have the factory head unit with XM radio. I will eventually get a new cd player and woul

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From: Crutchfield
Posted: Feb-14-2009

Polk Audio db521

I installed these in the front of my 2005 Jeep Wrangler. The two rear speakers in the sound bar are factory. My Jeep has the factory stereo and also comes with a factory sub woofer. Please keep that in mind as I rate this....... WOW! Major differenc

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From: Crutchfield
Posted: Feb-10-2009

not better than stock Harley speakers

I purchased these speakers for my '06 electra glide classic. they do not measure up to the stock speakers, they do not have the clarity and they distort at volume levels quite a bit lower than the stock ones. However in their defense, Harley uses hig

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From: Crutchfield
Posted: Jan-14-2009

Polk Audio what else do you have to say

These speakers are great. I have to in my front doors and the db 6x9's in the rear doors. These speakers are the best I have heard by far. The sound clariety is amazing. I just order two Polk MoMo 10 inch subs to add to my system. If anyone is wonder

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From: Crutchfield
Posted: Sep-29-2008

not impressed

i put these in my 95 ram p/u and am disappointed. i installed the baffles as well that were recommended, and must say they are weak. i even went all out and ran new speaker wire (16ga monster cable) to them from my deck. i dont know, was expecting

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From: Crutchfield
Posted: Sep-25-2008

I'd buy them again!

This is the 3rd set of Polks I have purchased from Crutchfield, these always sound great and add to any existing system.

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From: Crutchfield
Posted: Sep-08-2008

Nice set of speakers

My friend recommended I buy these speakers for my 26 foot Searay Boat. We bought a brand new Clarion Marine Head Unit and I had 4 (probably factory) 5 1/4 speakers in my boat. I bought 2 pairs and installed them on my boat. With the baffles, these

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From: Crutchfield
Posted: Sep-04-2008

Good clean sound

I replaced my factory speakers on my 97 jeep wrangler, you can beat the performance of these speakers in which you can clearly hear going down the road with the top down. I would recommend to any jeep owner.

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From: Crutchfield
Posted: Aug-18-2008

sweet addition

I replaced my 4, 4" speakers in my boat with these 5 1/4" Polks and WOW! I have paired these speakers with the Kenwood marine rated compact amp/10" sub combo to my JVC head unit with no additional amp pushing the Polks. The sound is crystal clear, e

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