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Polk Audio db525

5-1/4" 2-Way db Series Marine Certified Component Car Speaker System

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• Peak Power: 250W
• RMS Power: 100W
• 25mm liquid-cooled silk/polymer composite dome
• 12 dB / octave Butterworth outboard crossover
• Pole Plate Heat Sink
• Frequency Response: 53-23,000 Hz

Learn more about the db5251

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

db5252 thumbnail

Polk Audio DB5252 DB+ 5.25-inch Components (DB 5252)

OUR PRICE: $179.00

View item

Product Highlights


• Peak Power: 250W
• RMS Power: 100W
• 25mm liquid-cooled silk/polymer composite dome
• 12 dB / octave Butterworth outboard crossover
• Pole Plate Heat Sink
• Frequency Response: 53-23,000 Hz

Description


Polk Audio brand icon

Authorized dealer



General Features

  • 5-1/4" db Series (Marine Certified) 2-way Component System
  • Power Handling:
    • Peak: 500 watts per set / 250 watts each side
    • RMS: 200 watts per set / 100 watts each side
  • Impedance: 4 ohms
  • Dynamic Balance polymer/mica composite mineral filled cone is stiff yet lightweight for big sound, little distortion
  • 25mm liquid-cooled silk/polymer composite dome tweeter with neodymium magnet for clear, detailed highs
  • 12 dB / octave Butterworth outboard crossover for fiddle-free perfect sound
  • Flush & surface mount swivel cups allow placement flexibility and soundstage optimization
  • 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
  • Electronic tweeter protection circuit protects your tweeters from accidental abuse
  • Vented crossover housing gives you a choice of hidden wire channels for easier, more professional-looking installs
  • Frequency Response: 53-23,000 Hz
  • Sensitivity: 93 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Per Pair

Product history:

Polk Audio DB5252 thumbnail
(newest, current model)
Polk Audio db5251 thumbnail
(previous model, replaced by Polk Audio DB5252 DB+ 5.25-inch Components (DB 5252))

Specifications & Details


Speaker Specifications
Series
Polk db Series
Priced Per
Pair
Speaker Size
5-1/4"
Design
2-way Component System
Tweeter Design
Dome
Tweeter Composition
Silk-Polymer Composite
Woofer Composition
Polymer/Mica Composite
Woofer Surround
Rubber
Peak Power Handling
250 watts
RMS Power Handling
100 watts
Sensitivity
93 dB
Frequency Response
53 - 23,000 Hz
Impedance (Per Voice Coil)
4 ohms
Shallow Mount Installation
No
Top-Mount Depth (Mounting Depth)
2-5/16"
Bottom-Mount Depth
2-7/16"
General specifications
Speaker Grilles
Yes
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

db5251

Weight:

6.00lbs

Internal SKU:

db5251

Internal Product ID:

9112

Product and How-to Videos


Customer Ratings & Reviews



5 star
76%
4 star
14%
3 star
10%
2 star
0%
1 star
0%



Durability
4.7
Value
4.8
Features
4.5
Design
4.6
Usability
4.7

Customer Reviews

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Good Quality Speaker System

I purchased this speakers system to upgrade my OEM radio speakers on my 1997 BMW M3. I installed the speakers one at a time and then listened to the same music that I am familiar with. I first replaced the left 5 1/4 kick panel speaker and then listened to the music at different volume levels. I could only discern very slight improvement in mid bass. Got the same result with the right kick panel speaker. Just slightly tighter mid bass which may not be felt by an untrained ear. Next were the tweeters. Same procedure, one at a time, then listen for any improvement. This time was definitely a jump in improvement. I can better hear the cymbals, the esses coming out of the lips of the singer and hand movement of the guitar player sliding on the instrument. I decided to keep the system for this improvement alone. After completing the install, I rested a bit, sat in the drivers seat, and listened to the music in all it's entirety. Sound is better, but not to my delight yet. Next project, the head unit.

By ALEXANDER on February 6, 2012

56

found this helpful.

polk audio

The speakers sound good for vocal everything sound clear. I would recommend this product to others.

By g1wireless on September 17, 2013

53

found this helpful.

Amazing!

I got 2 of theese comp-sets in my car powered by a dynabel 2 channel @2ohm. The amp is giving 240 watt rms per set (120 watt rms per side). And the sound quality is AMAZING, i got one of the set in my front doors, and the other set in my back doors. The bass is very good, considering its only a 5 " midbass :) i got a 18 " subwoofer anyway, so the bass in the compsets is not what i was looking for, but the sound quality is amazing and loud! dosent distort as well.

I highly recomend this compset, but you need a amp to drive them at their best :)

By Rein on September 9, 2013

53

found this helpful.

Polk Speakers

The Polk 5.25 component set are pretty good. No noticeable distortion at the reasonable volume I've played them at. I haven't fallen in love with them though. I still love the Infinity Reference 6.5 components I had before. They were awesome!

By hifidriver on November 29, 2012

55

found this helpful.

Yes, I like Polk!

I purchased the Polk Audio db5251. I tend to prefer Polk products because they sound great and are durable in the humid Houston heat. I bought them in the early Spring and they are lasting through their first Houston Summer. I've owned other Polk speakers in the past specifically because they last through several Summers before I have to replace them and the price I found them for here is really great!

By Vince In Houston on August 11, 2011

54

found this helpful.

SOUNDS GREAT!!

I have 2 sets of these along with 2 sets of polk audios 3 1/2 in my yukon xl. they sound amazing!! real loud!! i have the components hooked up to a kicker 4 channel and the 3 1/2s hooked up 2 the radio. i also have 4 pioneer champion series 12's and all together its probable the best overall system I've heard. I got the polk audio because it has a lot of power. they run at 100w rms, which is really great for the price. i really recommend them

By jazzy on February 20, 2010

54

found this helpful.

I love these speakers !

I had one set of these in my truck for about 1-1/2 years. They sounded fantastic. So when I upgraded my subs and mid-bass (two 15's and four 8's), I decided to get another set of the db5251's to keep up.

IMHO, these are the best value for any component sets on the market. I love the soft dome tweets. Never harsh. They are just really loud and clear. What more can I say.

By Fish on February 24, 2012

52

found this helpful.

Clean and crisp sound

I wanted marine rated component speakers because they are going into the fairing on my 08 Harley Ultra. I originally replaced stock ones with Hog Tunes front and back. The Polks far surpass the Hog Tunes for clarity and crispness, they also have better bass response. That is why I just ordered the coaxial version of these to put into my rear speaker pods. Thanks again to the people at Sonix for reasonable prices and top notch service!

By tj on October 28, 2011

52

found this helpful.

Best value for sound quality components !

I knew from the start, that I wanted soft dome tweeters, regardless of which components I chose, as in my past experience, hard domes are just too harsh / edgy for my taste.

I always liked the Polk Audio speakers I had used / heard in the past + with the fact that they had soft dome tweets + with the awesome price at SonicE, I just couldn't pass them up.

I went with the db5251's, as I'm running them in a 4 way setup, along with 8" mid-bass, and 12" subs anyway, so my components don't have to put out any bass whatsoever. Plus the 5 1/4"s fit easily in the stock spots in my doors, with no modifications. I have them crossed over to grab from 250hz and up.

I'm giving them 111 watts RMS per set (as per the birthsheet of my Rockford Fosgate Power 1000 amp (also got a steal of a deal on that at SonicE :-) with no problems so far.
But the bottom line is, they sound freaking fantastic ! Super smooth, and natural. Bright enough, but not harsh or edgy.

I just don't think you will find a nicer sounding set of components for anywhere close to this price range. And you won't find them for cheaper than you will at SonicE.

Buy them from Sonic now ! :-)

Fish

By Fish on March 21, 2009

53

found this helpful.

Great buy

I purchased this component set to improve midbass performance over my Alpine SPS-510 coax speakers. Initially, I gave these component sets 55 watts rms to each side. While there was an incremental improvement noticed, it wasn't until I provided 110 watts rms to each side that I really noticed a difference (which was significant and very impressive). Tweeters were bright at first, but I used an RTA app to help diagnose a frequency peak at 10k, which I easily fixed with some basic EQ adjustments.

The gold speakers look pretty cool through my factory grill, which you really don't notice unless you look for them.... but I thought it was worth noting.

Overall, I am very pleased with this purchase, and I would recommend these to anyone with a midrange system.

By J-Rob on March 16, 2015

51

found this helpful.

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