5-1/4" DXi Series 2-way Car Speakers, Marine Certified for Boats/ATV/Motorcycles - Same Performance as DB521
• 135 Watts Max Each, 45 Watts RMS Each
• 3/4" (19mm) aluminum dome tweeter
• Dynamic Balance polypropylene cone
• 4 Ohm Impedance
• Sensitivity: 93dB
• Mounting Depth: 2 5/16"
• 135 Watts Max Each, 45 Watts RMS Each
• 3/4" (19mm) aluminum dome tweeter
• Dynamic Balance polypropylene cone
• 4 Ohm Impedance
• Sensitivity: 93dB
• Mounting Depth: 2 5/16"
The DXi521 is made with laser measurement technology via the Klippel Motor Optimization for a smooth excursion path at any volume. This creates a more efficient and long lasting speaker that performs great at low or high volumes. This model is equivalent to the popular db521.
Polk's engineers are able to design out driver and system resonances that cause distortion with the Dynamic Balance technology. The composite cones also feature a stiffness-to-mass ratio that allows the speakers to react to faster transients with finer detail. You not only get clarity, but function and precision.
The DXi Series speakers go through the ASTM (American Society for Testing and Materials) marine testing to become marine certified. The speakers go through two harsh tests: the B117-03 Standard Practice for Operating Salt Spray (Fog) Apparatus and the D4329-99 Standard Practice for Fluorescent UV Exposure of Plastics. The Salt Fog tests exposes the components 95° Fahrenheit and 5% salt solution for 500 hours and the UV test puts the speakers through 8 hours of UV-B light, black body temperature of 60 degrees Celsius and 4 hours condensate water, black body temperature of 40 degrees Celsius. These tests ensure these speakers will last in the harshest of marine environments.
Priced Per Pair
Internal Product ID:
112445
clean and crisp
sound is clean, clear and crisp. for the price im shocked at how good they sound
2
found this helpful.Great!
Very solid product for the price. Would recommend to anyone.
1
found this helpful.Good Speakers
Good sounding speakers that are easy to install. They also look much better than the speakers replaced.
1
found this helpful.ok for rear fill
I bought these because the ones we bought for our Mazda 6 sounded great (they were 6.5)... this pair paled in comparison. They sound ok as rear fill when singled out but that's it I wouldn't rely on them for much more than that. Given their size and rating I expected more butt should have known better. Either way hard to beat for the price. Would I buy them again probably not. Next time I'll buy a set of 6" mid basses and make them work.
1
found this helpful.Awesome speakers!!
The sound, price, and quality are great! Everyone should have a front and rear set to put in there car to hear the difference!
Great package everything I needed
The panels were a drag but the speakers snapped right in no problem the kit of wires was great sounds real good can't wait for my subwoofer box to show
Great speakers
Great sound and fit. I am pleased with my purchase of these.
Great value
I bought many of the polk speakers over the year , best all around sound great up grade over a stock speaker , and work great with an amp. would and have bought over and over.
Good speakers
Good set of speakers, especially for the money. I installed them in a 2015 Indian Chieftain teplacing the stock speakers. There is no comparison now, these speakers made a vast improvement.
Polk Audio DXi521
Trued Polk quality at a very affordable price. Sound surprisingly good.
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