post #1 of Old 02-03-2010, 07:23 PM Thread Starter
Registered User
1993 XJ Cherokee 
Join Date: Apr 2009
Posts: 680
This bad boy slips easily into a door and like all db loudspeakers delivers the awesome sound quality people have come to expect from Polk Audio. Of course db521 comes with the full complement of exclusive Polk features that make the it an exceptional value for the price.

* Dynamic Balance® Driver Technology for pure, distortion free sound.
* Neodymium is a rare earth material we use in all db driver magnets, excluding 461p, that are about 1/10 the weight of a comparable ceramic magnet and much more powerful.
* Composite Cones feature tremendous stiffness-to mass ratio. Lower mass means faster transients and finer detail.
* Klippel Optimized Components for consistent, distortion-free sound.
* Marine Certified means the db521 is built tough to withstand the harshest environments on the water.
* Wheel-inspired style combines with rugged durability in the db grille.

db Series Features:

This is how you turn up the style.

The look is about more than performance. It's about making every detail count, from the wiring harness under the hood to the fit and finish of your loudspeaker installs. Even before you fire them up, the db Series delivers. ABS wheel-inspired grilles make a muscular statement about your entire audio system and say you're ready to unleash some real sound. Hidden wire channels give your system a clean, professional look. Now if you'd prefer to be more subtle about your audio system (although why would you?), db makes a comfortable stealth installation and will mount easily behind factory grilles.

The db Series fits. Yes, it's just that simple.

The last thing we want is to sell you a great speaker that doesn't fit. Our new multi-hole mounting pattern and shallow-depth magnet design have created our highest vehicle application ratio for easy drop-in installations in just about any car on the road (and probably some that should have been taken off the road years ago). Tweeters in the component models can be flush & surface-swivel mounted using the supplied hardware. With db, we've made sure you have maximum install flexibility.

High Efficiency Design

It means less amplifier power is needed for more audio output. Meaning better sound and more volume using less power. The bottom line is db Loudspeakers will definitely blow you and your friends away, whether they're driven by aftermarket head units or factory installed electronics. (If you really want to punch your music up, check out our PA amplifiers.)
Advanced Component Systems

Component models have a vented crossover housing and hidden wire channels for an easier, more professional-looking install. All component models use a 2nd-order Butterworth outboard crossover for component system sound - at a coaxial price.

A 1-inch Liquid-Cooled Silk/Polymer composite Dome Tweeter with Neodymium magnet gives db Series component systems clear, detailed highs. The crossovers features an electronic tweeter protection circuit to protect your tweeters from abuse for reliable high output sound from any source.
2-way and 3-way Coaxials.

Because sometimes space is tight.

Hey, maybe a full-blown component system and a db sub enclosure in a SmartCar isn't all that practical. Some db Coaxials will fill the bill quite nicely, thank you. There are three new db models not previously offered in the db line: a 3-1/2 inch diameter coaxial, a 4x6 plate-style speaker and a 6-1/2 inch Slim Mount coaxial for easy fit into shallow doors.

The 6-1/2 inch sized db651 and db651S models come with 6-3/4 inch adaptor rings for easy fit in VWs, Audis, BWMs and other European cars.

The 3-way coaxial speakers hav e 3/4-inch (19mm) Liquid-Cooled Silk/Polymer composite Dome Tweeter with Neodymium magnet that plays clear, detailed highs. Go ahead, that rear deck is aching for thunderous loudspeakers like the db691 6x9 3-way Loudspeakers, featuring both a 1" (25mm) Liquid-Cooled Dome Tweeter and a 3/4" (19mm) Super-Tweeter.

Marine Certified

Marine Certified means your db loudspeakers will perform reliably on the water as well as they do on land. So we attacked every db speaker with a series of punishing real world and accelerated weathering lab tests to see if they could take what some pretty nasty marine and automotive environments could dish out. We exposed dbs to hundreds of hours of salt fog, intense ultraviolet light and extreme temperatures from -40° to 185° F (-40° to 85° C). They performed as well after the tests as before (they didn't look so good). No wonder Correct Craft® builds Polk Audio speakers into their award-winning Nautiques® ski and wakeboarding boats, and Bullet® uses Polk db speakers in their marine "tower" speaker enclosures.

Attached Thumbnails
Click image for larger version

Name:	db521.jpg
Views:	11
Size:	15.3 KB
ID:	102331  

Help JF anyway you can. Click Here.
Threadkillers - Making Posts So Epic, They Destroy Threads
Anything will fit with IMAGINAAAAAAAAAAAATION!........and a Sawzall!!!

Currently Jeepless against my own will.
Mediarocker is offline  
post #2 of Old 02-03-2010, 07:32 PM Thread Starter
Registered User
1993 XJ Cherokee 
Join Date: Apr 2009
Posts: 680
I love these speakers! I had Polk db571's on my car and loved their sound. It just so happens that these were in the Sound Bar when I bought my Jeep! I love them. Only problem with them is for them to sound their full capability, you should run them off a speaker amp. Its not needed, but for audiophiles like me, I would do it. Marine Certification means that I don't have to freak about my speakers being exposed in the rain in my jeep! Definitely recommended.
Mediarocker is offline  
post #3 of Old 04-29-2010, 12:37 PM
Registered User
2001 TJ Wrangler 
Join Date: Apr 2010
Location: Augusta, GA
Posts: 3
great speaker for size and price, definitely recommend
BigBlue01 is offline  
post #4 of Old 06-28-2010, 05:19 PM
jeepjoe4's Avatar
2006 LJ Wrangler 
Join Date: Apr 2010
Location: huntsville
Posts: 235
Polk,s are the only speakers i will run in my vehicles manly because i just cant blow them not that i try but for some reason i always go threw speakers like they are going out of style
jeepjoe4 is offline  
post #5 of Old 07-18-2010, 06:50 PM
Registered User
1999 TJ Wrangler 
Join Date: Feb 2010
Location: SE Florida
Posts: 41
For the price, they're about average. These would be just average if they weren't marine rated. That adds a lot of peace of mind when the top is off. I have these in the dash(with homemade adapters) and the soundbar. I would keep the ones in the dash, but probably go with 6 1/2's for the soundbar. Or, if i did it all over again, go with Alpine type S speakers(they sound great, and I think they have marine versions?).
TheRover is offline  
post #6 of Old 09-16-2010, 10:18 AM
Registered User
1999 TJ Wrangler 
Join Date: Aug 2009
Location: Post Falls
Posts: 80
HUGE improvement over the stock speakers in the sound bar.
dolson60174 is offline  
post #7 of Old 02-02-2011, 07:47 AM
Registered User
2005 TJ Wrangler 
Join Date: Dec 2010
Location: Tampa Bay
Posts: 5
These speakers sound great. The highs and mid-bass are a tremendous improvement over the factory speakers. The only con, (which wasnt a big deal) was that I had to modify the sound bar to accept the larger size speaker.
Fishinnick is offline  
post #8 of Old 03-21-2011, 02:40 PM
Registered User
1997 TJ Wrangler 
Join Date: Oct 2010
Location: Johnstown
Posts: 30
great speakers marine grade so they can get a little wet
Msprain10 is offline  
post #9 of Old 10-09-2011, 08:30 AM
Registered User
1998 TJ Wrangler 
Join Date: Jul 2011
Location: dallas
Posts: 128
They are great! I put the 5.25's in the dash with adapters. Went in smooth and sound amazing. They where the first thing i did when i got my jeep. I only had them installed and could almost hear clearly on the highway. Adjust the settings on head unit to limit the rattle of the dash with bass. Primarily listen to Rap/Hip-hop.
geyo is offline  
post #10 of Old 02-14-2012, 11:02 PM
Registered User
2002 TJ Wrangler 
Join Date: Jun 2010
Location: South Jersey
Posts: 1,375
These Polks along with the stock front speakers and a 10'' sub sound very good played at around 80% volume. Getting into friend's vehicles with stock audio just isn't the same anymore. These offer hardly any low range bass and I have to turn the bass as low as it will go for these speakers so they won't distort and sound like total crap. You really need a sub for a complete sound package.
TheStigX is offline  
post #11 of Old 03-03-2012, 04:28 AM
Registered User
1999 TJ Wrangler 
Join Date: Feb 2011
Location: KC
Posts: 9
Cheap and Sound way better than the stock 4x6 in the dash
rhino35350 is offline  
post #12 of Old 09-06-2012, 09:20 PM
Registered User
2000 TJ Wrangler 
Join Date: Mar 2012
Location: Porter Ranch
Posts: 271
they are awesome. love em. cheap and good alternative
itzfreddie is offline  
post #13 of Old 03-04-2014, 07:25 PM
Registered User
2009 JK Wrangler 
Join Date: May 2012
Location: Kalamazoo
Posts: 959
I love being able to get them we when I'm topless
mtnbiker995 is offline  
post #14 of Old 05-11-2014, 05:22 PM
Registered User
1998 TJ Wrangler 
Join Date: Mar 2005
Posts: 197
I have not gotten to use these speakers for an extended period of time so I do not know anything about their durability. I do feel they are a high quality speaker option to upgrade the front speakers. You must purchase or make an adapter bracket to mount the speakers as the stock ones aren't the same size. I would recommend them to anyone.
SoCoYJ is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Polk Audio DB461P RobFromRI Speakers 11 04-08-2013 09:12 AM
Polk Audio DB650DB H0ver101 Speakers 5 02-24-2013 12:27 PM
polk audio db525....5-1/4 SouthernMoose Speakers 28 02-24-2013 12:21 PM
Polk Audio MMC 525 Polk Momo RobFromRI Speakers 11 01-05-2013 03:55 PM
Polk Audio MMC460 Karamba Speakers 6 08-10-2008 07:08 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome