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Polk Audio db521 vs Helix Blue B5X

 
Polk Audio db521
In Stock 
$64.99
  • Polymer/mica composite woofer with butyl rubber surround
  • 3/4" pivoting liquid-cooled silk/polymer composite dome tweeter
  • power range: 4-45 watts RMS (135 watts peak power)
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Helix Blue B5X
In Stock 
$79.99
  • injection-molded polypropylene woofer cone with urethane surround
  • 1/2" Mylar dome tweeter
  • 5-35 watts RMS power range
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Product Features

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Condition New StockNew Stock
General Polk Audio db521Helix Blue B5X
Speaker Size
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5 1/45 1/4
Design
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2-way2-way
Tweeter Design
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3/4" Dome1/2" Dome
Tweeter Composition
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Silk/Polymer compositeMylar
Woofer Composition
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Polymer/Mica compositeInjected Polypropylene
Woofer Surround
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Butyl rubberUrethane Foam
Parts Warranty
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1 Year2 Years
Labor Warranty
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1 Year2 Years
Specifications Polk Audio db521Helix Blue B5X
Sensitivity
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93 dB at 1 watt
90 dB at 1 watt
Frequency Response
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60 - 22k Hz70 - 22k Hz
RMS Power Range (Watts)
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4-455-35
Peak Power Handling (Watts)
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135100
Impedance (Ohms)
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44
Top-mount Depth (Inches)
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2 5/162
Bottom-mount Depth (Inches)
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N/A2 1/4
Cutout Diameter or Length (inches)
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4 3/44 3/4
  Owner's ManualOwner's Manual
 Hands-on ResearchHands-on Research
 
Polk Audio db521
In Stock 
$64.99
Add to Cart
Helix Blue B5X
In Stock 
$79.99
Add to Cart

Car Speakers: What to Look ForWith so many speakers to choose from, it's important to know what to look for. Keep these points in mind, you'll be able to choose the perfect speakers for your car audio system.

How tweeter design affects soundWhen you're shopping for speakers, don't forget the tweeter. Tweeters reproduce the upper frequencies in your music — they're what makes your highs sparkle and come to life — so they're vital for proper soundstaging and stereo separation.