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Polk Audio DB 402

DB+ Series 4" 2-way car speakers

Item # 107DB402

If you're building your new system on a budget, Polk Audio's DB+ Series speakers are a dynamite value as well as...

Find what Fits your car

If you're building your new system on a budget, Polk Audio's DB+ Series speakers are a dynamite value as well as...

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Item # 107DB402

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C$119.99 pair
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About the Polk Audio DB 402

Stellar performers

If you're building your new system on a budget, Polk Audio's DB+ Series speakers are a dynamite value as well as being stellar performers. Their journey to excellence begins with a laser-imaged design that ensures minimal distortion, a smooth response, and incredible sonic detail. 

Stellar performers

If you're building your new system on a budget, Polk Audio's DB+ Series speakers are a dynamite value as well as being stellar performers. Their journey to excellence begins with a laser-imaged design that ensures minimal distortion, a smooth response, and incredible sonic detail. 

Honed Polk perfection

These DB 402 2-way speakers feature a 4" polypropylene woofer cone with a strong rubber surround for solid playback and resilience under the environmental stress that comes with living in your car doors. A 3/4" silk dome tweeter delivers smooth highs with precision to give you a vibrant soundstage, while a built-in crossover keeps the highs and lows flowing to the proper drivers.

For custom installation

Polk includes mounting hardware, along with boldly designed grilles that add flare to your vehicle's interior if you're doing a custom installation.

READ LESS

Product highlights:

  • 2-way car speakers (pair)
  • 4" polypropylene woofer cone with rubber surround
  • 3/4" silk dome tweeter
  • handles up to 45 watts RMS (135 watts peak power)
  • frequency range: 60-22,000 Hz
  • sensitivity: 90 dB
  • top-mount depth: 1-13/16"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # DB402
KEEP READINGREAD LESS

What's in the box:

  • Two 2-way speakers
  • 2 Grilles
  • Two 12" Lengths of speaker wire (tinned wire on one end and female quick slides on the other)
  • 4 Red plastic butt connectors
  • Eight 1" Stainless steel screws
  • 8 Stainless steel speed clips
  • Owner's manual
  • Online registration information

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Polk Audio DB 402 reviews

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Polk Audio DB 402

Crutchfield customer from North Liberty, IA on 8/8/2019

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Perfect, exactly what I was looking for to extend the acoustics of our boat out over the water!

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Solid speaker

Crutchfield customer from Lewiston, ID on 7/28/2019

1992 Toyota Pickup

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Another solid speaker from Polk. Replaced some old Kenwood speakers I had and they are much better! I installed these in a 1992 Toyota pickup, in the bottom corners of the dash. The screw diameter must be a little bit smaller on these, as the screws barely grab onto the flanges. I just grabbed some little washers to make sure there was a secure fit.

Pros: Sound, ease of install

Cons: Not quite a perfect fit.

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1 of 1 found this helpful

Great bang for buck and size

Edwin from White Plains N.Y. on 5/23/2019

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For their size these speakers are amazing. Great mid bass to highs, these are a great addition and sound clear.

Pros: Sound great and clear

Cons:

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Polk Audio DB 402

Crutchfield customer from N Chesterfld, VA on 5/23/2019

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polk always makes good speakers...haven't installed them yet ..will be used for dash speakers in my 17 silverodo

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Polk Audio DB 402

Crutchfield customer from Nunda, SD on 5/8/2019

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Great product. Awesome service

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Polk Audio DB 402

Crutchfield customer from Calera, AL on 4/26/2019

2003 Chevrolet Silverado 1500

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Paired nicely with my Polk 6.5 components in my ext cab Silverado. Great sound and high quality construction are things Polk never seems to disappoint

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Polk speakers

Crutchfield customer from Charleston, WV on 4/22/2019

2005 Jeep Wrangler

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For the price they are a good little speakers for my Jeep TJ speaker pods.

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Polk Audio DB 402

Crutchfield customer from Vandalia, IL on 4/11/2019

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These have surprisingly full sound for only 4 inch speakers. They're several levels better than the factory speakers we had.

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Polk Audio DB 402

Crutchfield customer from Altadena, CA on 4/9/2019

2013 Chevrolet Spark

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These speakers (in the front and back) were a major improvement over the factory ones that came with my Spark EV. But the treble in these speakers is bright to the point of being harsh at times. I turned down the treble at bit in the settings (while boosting the bass the same amount) and that did help. - Not much bass from these speakers, but that was as expected.

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Polk Audio DB 402

Crutchfield customer from Greenwich, NJ on 3/24/2019

2019 Polaris Ranger XP900

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Fitment was great and sound was perfect.had all the hardware for installation.

Pros: Sounds great

Cons: None so far

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Polk Audio DB 402

Crutchfield customer from Camas, WA on 3/11/2019

2000 Subaru Forester

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The DB 402 was a noticeable upgrade to the aftermarket speakers I originally purchased with my system for my 2005 Subaru Impreza Outback. I am limited to a 4" speaker in the rear door and 6 1/2" in the front and this one gives me greater volume and base.

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Impressed

Michael Webb from Vidor, TX on 3/10/2019

2019 Jeep Wrangler Unlimited

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Same size speakers, stock had 3 mount points, the Polk had 4 mount points. I reinstalled the factory screws. Added batting insulation, 1/4 ins foam weather strip to make a perfect seal. I love the sound of the speaker. Next I'll hook up my stealth amp to get the full potential from the speakers

Pros: Fast , plenty of hardware to go different directions after trying to install

Cons: Non yet, I will post an update after I install the amps

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Polk Audio DB 402

Jim from Pinehurst, TX on 2/4/2019

2000 Chevrolet Silverado 1500

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Great little speakers. Clear sound. Even good bass for the size.

Pros:

Cons: None

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Excellent low-cost upgrade over BMW (base) stock!

Scott from Chelmsford, MA on 1/27/2019

2010 BMW 3 Series

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Put these in the front doors on my BMW 2010 328xi sedan (e90) (I have the 'base' system). Crutchfield lists them as not fitting, and that's probably true if you want to use the existing grilles. I mounted these from the outside though (drilled holes) and used the included Polk grilles, and they look and sound great! In the BMW setup the low end is covered by woofers under the seats, and of course who would expect any low end from 4 1/2" speakers anyway... I really like the Polk DB 402 speakers - the clarity they bring over the factory speakers is just great! I've got a second set waiting to be installed on the package shelf!! Photos: #1 - Polk speaker mounted from the outside, as viewed from the inside; #2: Mounted on door with Polk Grille (door not fully reassembled yet).

Pros: Excellent update for the money

Cons: For my application, I had to work with them to mount them (although Crutchfield does list them as not fitting, so that's a problem of my own making).

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Polk Audio DB 402

Al from Norfolk, VA on 1/15/2019

2003 Isuzu Rodeo

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Sounds great!!

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POLK Speakers

Crutchfield customer from Deltona, FL on 1/11/2019

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For being a 4" speaker thes sound really good.

Pros: Nice sound.

Cons: NONE

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Great little speakers

Butch from Ridgway, CO on 1/1/2019

1988 Toyota Pickup

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For being only 4" speakers they are pretty darn good!!

Pros: Easy to install

Cons: Small speakers!!

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Polk Audio DB 402

Randall from Niceville, FL on 12/23/2018

2004 Chevrolet Silverado 1500

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Sound great in the back of my 04 Silverado. Didn't need the "baffles" they recommended.

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Polk Audio DB 402

Crutchfield customer from Spokane, WA on 12/23/2018

1995 Toyota 4Runner

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They sound great in my ride, crisp and clean.

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1 of 1 found this helpful

Polk Audio DB 402

Dave from Robinson, IL on 12/15/2018

1994 Chevrolet C Series

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Sounds great

Pros: Great fit

Cons:

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Polk Audio DB 402

Crutchfield customer from Dunlap, TN on 10/28/2018

1995 Toyota Avalon

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Excellent quality and sound for senior citizens. Wide frequency range. Crutchfield's guidance made installation flawless. Thankyou!

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Polk Audio DB 402

Crutchfield customer from Boaz, AL on 9/10/2018

2006 Volkswagen Jetta

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Nice clear sound.

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Polk Audio DB 402

Crutchfield customer from Santa Cruz, CA on 9/7/2018

1984 Volkswagen Vanagon

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Excellent speakers! A lot of sound from a small package and priced well.

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Polk Audio DB 402

Crutchfield customer from Huntsville, OH on 8/26/2018

2006 Chevrolet Silverado 1500

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Easy to install . Sound good

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just OK

john from Hanover Park, IL on 8/6/2018

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not enough Bass

Pros: nice design

Cons: not enough bass

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Polk Audio DB 402

Kevin from Wilmington , NC on 7/22/2018

2018 Harley-Davidson Road Glide

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Small speaker with great sound.

Pros: Easy install

Cons: None

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2 of 2 found this helpful

Great fit, no custom cutting required

Lee from Cape Coral, FL on 6/3/2018

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Great little speakers, direct mount for my 2005 Goldwing.

Pros: Great size, and sound.

Cons: None

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4 of 4 found this helpful

Unimpressed for a Polk

Andy from Palmyra, NY on 5/15/2018

2012 Ford Mustang

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I bought these to be an upgrade to the 4" speakers that came stock in my Kubota L4760 tractor cab. I figured since they were Polk - and the other reviews seemed positive - they would be a GREAT upgrade over the Clarion factory paper things... Boy was I wrong. What a disappointment. While the high range is terrific... mid falls off fast and there is nothing down low... and before you think I'm insane saying that with a 4" speaker - I'm not expecting earthquake bass... but - with one installed and one factory speaker installed - and sliding the balance from side to side - there's no context. The Polk has a crisper high end... but that's it. And in a small space like the cab of a tractor - that's not a great thing. Overall the sound profile of these is pretty middling and I sent them back... the factory speakers are MUCH more consistent and fuller across the entire spectrum.

Pros: well built, nice package, hefty, sharp high range

Cons: weak midrange, awful low range, not as good as the factory speakers they were replacing

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Good highs and mids

Crutchfield customer from Hailey, ID on 5/8/2018

1989 Nissan Hardbody

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OK if you have a separate woofer, but a little tinny if you expect them to carry the whole load.

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Polk Audio DB 402

Guest from Rch Palos Vrd, CA on 5/6/2018

1987 Mercedes-Benz 560SL

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Great speakers treasonable price, easy installation.

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Really do not fit in a Lotus Elise if you want to use included grills

David from Derry, NH on 4/29/2018

2006 Lotus Elise

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I bought these to replace the Blaupunkt front speakers in my 2006 Lotus Elise that have gone bad from age. One of the problems with the Blaupunkts is the speaker grill that doesn't like to stay in place with all the vibrations in the Elise. I chose the Polks because they came with screw on grills and they are suppose to fit the Elise. Unfortunately, the Polks have a ~1/2" smaller screw pattern than the existing predrilled pattern in the Elise. These are on the top of the dash under the steep rake of the windshield with very little accessibility, so modifying the holes was not an option. I was forced to mount the speakers with the existing Blaupunkt grill assemblies. Had I known this would be the case I would likely have chosen different speakers that were available to supposedly fit but came without grills. The speakers sound good and I have not yet installed the matching Polks in the rear. Hopefully they fit.

Pros: Good sound marine capable, good for a roadster

Cons: Screw hole pattern doesn' match Elise

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Polk Audio DB 402

Crutchfield customer from Spokane, WA on 4/26/2018

1988 Toyota 4Runner

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Grade A

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Polk Audio DB 402

Crutchfield customer from Corwith, IA on 4/13/2018

1990 Chevrolet C Series

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Excellent upgrade over factory speakers. Very crisp sound, and a great value. Every thing you could ask for from a 4 inch speaker.

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Polk Audio DB 402

Crutchfield customer from Red Bud, IL on 4/10/2018

1994 GMC C Series

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Awesome sound

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Polk Audio DB 402

Crutchfield customer from Waxhaw, NC on 4/9/2018

1990 Chevrolet C Series

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Great Product!

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Polk Audio DB 402

Crutchfield customer from Mount Dora, FL on 4/6/2018

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Good sound from inside the tin box. 1995 Tracker

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Polk Audio DB 402

Rashee from Macon, GA on 4/6/2018

1990 Chevrolet C Series

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Great speakers fits perfect in my 1990 c1500

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Polk Audio DB 402

Crutchfield customer from Newport, AR on 3/18/2018

1987 Ford Bronco II

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overall good quality for the price

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Polk Speakers

James from Woodbine, GA on 1/28/2018

2004 Jeep Wrangler

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Great sound from a small speaker. Installed these on my 2004 Jeep Wrangler, prefect fit.

Pros: Loving the sound from my Polk speakers. Way better than stock, easy to install and a prefect fit

Cons: None

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Little speaker goes a long way

Garrett from Sunnyvale, CA on 1/18/2018

2006 Subaru Impreza WRX STi

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The speakers look nice and are packaged well. They also come with some screws, wires with one end pre-terminated for the speakers, and heat shrink connectors. I installed these on a 2006 Subaru Impreza STi. Crutchfield does not offer a mounting bracket for the rear doors, so you can do what I did and go to the hardware store and pick up some speed nuts and 1-2" brackets and make them fit, or you can find an adapter from another website. I'm cheap and impatient, so I went with the first option. As for sound, well, they're only 4" speakers and the STi is not known for its sound isolation, so you're not in a concert hall, but at moderate volume levels, the music is pretty crisp. Paired with a sub and/or Dynamat, they would probably go a long way. Recommend? Yes, for a budget speaker to upgrade from some old OEM ones.

Pros: Affordable

Cons: Small means limited bass, not a lot of power. I own a 2006 Subaru.

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Polk Audio DB 402

Crutchfield customer from Westerville, OH on 12/31/2017

1978 Jeep CJ7

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Excellent sound and quality for the price.

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1 of 1 found this helpful

Crutchfield first class.. Speakers quality remains questionable

Richard from Douglasville, GA on 12/27/2017

1989 Isuzu Pickup

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Ok first let me say to be fair and honest that these speakers are mounted in the factory dash corners and are the only two speakers currently handling the sound recreation duties in my small isuzu pickup. Secondly, it's relatively early to review these speakers because I've only had them installed a couple months and I installed them together with a new Sony bluetooth/cd/hd receiver. Both of which are assumed to be compatible and installed correctly but none the less new to me and perhaps need adjusting or insulation etc. Then lastly in the interest of full transparency I would share that these particular speakers came from the outlet side of crutchfield so I am also assuming they may not be brand new and perhaps I shouldn't expect much. Having said all of that I will say that my (first time) online purchase from Crutchfield was very user friendly. My order was delivered promptly, on time and included thorough instructions and wiring harness specific to my vehicle at no additional cost! The speakers themselves or rather their description and details were perhaps a bit sensationalized and I believe the speakers, particularly their magnets, are noticeably smaller in actual size than in their online photographs. I didn't expect much, if any, bass response therefore I was not disappointed it its absence. However, while at first very happy, I'm now disappointed with their operation. As I hear a subtle but noticeable "warble" in the sound presentation like maybe a cone

Pros: -Ease of installation. -"Aesthetically" form meets function.

Cons: Slightly misrepresented in pictures and descriptions. But definitely for open air vehicles and marine applications. Being Polk and marine rated surprisingly quiet & limited in capability even at lower volume. Recommend avoiding impulse to save money by purchasing oulet/open box items online. Because apparently saving money in this manner equals disappointment in the product quality and its basic function. Surprisingly (at least for polk audio name brand) less than sub-par performance.

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1 of 3 found this helpful

Polk Audio DB 402

Crutchfield customer from Cedartown, GA on 12/24/2017

1993 GMC S15

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great sound

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Cons:

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1 of 1 found this helpful

Polk Audio DB 402

Crutchfield customer from Williamsport, PA on 11/28/2017

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Installed these in a kubota skid steer loader cab, major improvement in sound compared to stock paper speakers. But radio isnt real powerful so I cant hear all of speakers potential.

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1 of 2 found this helpful

Polk Audio DB 402

Jaffray from Hollywood, MD on 11/16/2017

1990 Audi 200 Quattro

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These little guys ROCK!!!!

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4 of 7 found this helpful

Easy, inexpensive and sound great!

Doug from Morganton, NC on 10/10/2017

2013 Lexus ES350

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Huge improvement in sound quality in my 2016 Lexus ES350 with the base (non Mark Levinson) stereo! Used these in the three dash speaker positions; used the 6.5 inch version in the doors. You could get fancier and spend more money, but this was easy, inexpensive and fits behind the factory grilles. The dash positions were a little tight depth wise but they fit. Had to adjust/spread out the mounting tabs a little to use the largish factory mounting bolts/holes but that was easy. Crutchfield doesn't have wiring adapters for the dash speakers, but I hooked them up with the pigtails that came with the speakers. Factory speakers were labelled + and - so that was easy to figure out. About 3 hours total for dash and all four doors.

Pros: Fits factory openings, fits behind factory grilles, inexpensive, sounds great for the price

Cons: Can't think of any so far

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Polk DB402

Doug from Placerville, CA on 9/12/2017

1992 Mazda MPV

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Sound good for a small speaker, pretty loud without external amp, efficient , that's one of my criteria for purchase. Adapter harness was hard to get onto the speaker. So tight I thought it was going o break the tab. Had to open up plug with a pick, to get it to go on.

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2 of 2 found this helpful

execellent quality

david from MO on 8/20/2017

1995 Toyota Supra

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good mid & high range but weak bass because of restricted size

Pros: great sound

Cons: wish they made a 5 1/4 to fit Supras so as not to have to use brackets to fit the smaller speakers, it's a real pain to make them fit!

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1 of 1 found this helpful

Polk Audio DB 402

Crutchfield customer from Boone, NC on 7/21/2017

1990 Chevrolet C Series

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Product was shipped on time and quality was beyond expectations !

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2 of 3 found this helpful

Quality Speakers

Ben from Center, ND on 6/18/2017

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I bought these to put in the dash of my 88' Corsica. Other than having to bend a few of the mounting tabs, they were a perfect fit. As far as sound goes, the highs and mids are very good. The bass isn't very impressive if you are just running them off the radio. They seem high quality and I am overall happy with them. Would recommend spending the extra 20 bucks on these vs. a cheaply built 40$ 4" speaker.

Pros: Quality build and reasonable price

Cons: Bass is weak un-amped

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3 of 3 found this helpful

best sound for 4inch

Vinod from ludhiana, India on 5/22/2017

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polk audio becomes my favourite for sound in my car, i am using polk mm 691 in rear and this 4inch in front and the combination is class now... thanks Crutchfield

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2 of 2 found this helpful

Great Value

Ty from Bisbee, AZ on 5/16/2017

1994 Jeep Wrangler

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A lot of bang for your buck. These speakers sound great in the pillar of my Jeep Wrangler. If that's where you're installing yours, place electrical tape over all of the connections so that they don't ground out on the metal frame.

Pros: Price

Cons:

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4 of 4 found this helpful

Old truck upgrade

Paul from Leavenworth, KS on 5/12/2017

1993 Chevrolet S10

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This went in my 93 s10 truck dash. Installation was a breeze with the adapters and they sound much better than the 25 year old paper trash that they replaced. I do have to turn them up louder as I'm going from a 10ohm to a 4ohm. That's not a big problem as I don't push them hard. If you turn these WAY up with an old delco radio, it could cause problems due to the ohm difference. Overall, I'm quite pleased.

Pros: great upgrade, nice sound.

Cons: don't pound these with an old radio or the radio might die!

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Polk Audio DB 402

William from Rayland,Ohio on 4/25/2017

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The people at Crutchfield are top notch. I had trouble finding speakers for a 35 year old motorcycle, but your tech guys were very helpful and very thorough in their help. Thanks again.

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5 of 5 found this helpful

Polk Audio DB 402

James from North Miami Beach FL on 3/24/2017

1998 Land Rover Discovery

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These were a near perfect fit for my 1998 Land Rover Discovery I. The mid range quality is good. These speakers are rater Marine and this is a good fit.

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Polk Audio DB 402

Steven from Booneville AR on 11/2/2016

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They ok, little better than stock. But these went into my large C&A Tractor, so did not expect much from so little speakers in the noisy environment anyway.

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4 of 10 found this helpful

Polk Audio DB 402

Robert from Richmond, VA on 8/21/2016

2003 Volkswagen Eurovan

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For a 4" speaker the sound is really good. I used them to replace the tweeters in the dark of my 2003 Eurovan Weekender. They fit well after cutting off one set of opposing tabs. The improvement in the quality of the output from that area of the sound system was great! Much better high and mid range and the addition of higher end bass which was non existent before. I also installed some 800 Hz cut off bass blockers (Item #: 127BB800A2) to help keep the sound free from low end bass distortion.

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5 of 5 found this helpful

Polk Audio DB 402

Don from Bremerton, WA on 7/25/2016

1994 Toyota Pickup

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Didn't fit easily into dash openings. Had to grind off plastic spacers that held original spkrs & attach clips so I could screw spkrs in. Plug-In of terminals was simple.

Pros: Sound much better than original spkrs! Bass & volume got a real boost. Wish I woulda installed many years ago!

Cons: Had to do a bit of grinding and modifying to install properly. Otherwise, install went well. Probably took about 2 hours, counting removal/install of dash areas

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Another great set of Polk Audio car speakers

Daniel from PA on 6/23/2016

2001 Subaru Forester

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I just finished installing these speakers in the rear doors of my 2001 Subaru Forester, replacing a previous set of Polk EX501a's that had occupied that space for some time. One of the speakers had the paperboard insulating ring start to separate from the speaker itself and was producing an annoying rattle. Rather than mend it with some simple adhesive, I decided to upgrade instead. These nicely compliment the db651s 6.5" Polks that are in my front doors, although I think the tweeters on these have slightly better dispersion. The highs easily reach up from the lower openings and hit the listeners' ears and the reproduction blends well front to back. I'm driving these with a Pioneer AVH-X3800BHS using the internal amps and I'm very pleased with the sound (at this time I don't intend to use an external amplifier). Naturally, these don't excel at low frequency reproduction. I do intend to Dynamat all of my doors, floors, and other portions of my vehicle panels to cut down on noise bleeding through the sheet metal, and anticipate this will help to clean up the uneven frequency response which is a byproduct of very thin, tinny-sounding doors. I can't wait to see how that improves the sound. Install was straightforward by simply removing the factory covers on the doors, unscrewing the screws holding the previous speaker in place, plugging in the included harness from Crutchfield to mate up the factory connector with the new speakers, and reversing the steps. No regr

Pros: Marine-certified so I feel safe that these will hold up well in the northeastern climate swings during the winters and summers Quality materials and build for an attractive, subdued look Excellent sound quality for the money spent

Cons: None that I can find

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More details on the Polk Audio DB 402

Pat M.

Features & specs

General
Speaker Size 4
Design 2-way
Tweeter Design 3/4" Dome
Impedance (Ohms) 4
Tweeter Composition Silk
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) 90
Sensitivity at 2.83 volts N/A
Frequency Response 60 - 22k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 45
Peak Power Handling (Watts) 135
Top-mount Depth (Inches) 1 7/8
Bottom-mount Depth (Inches) 2 1/16
Cutout Diameter or Length (inches) 3 1/2

Product Research

Features

Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

4/2 Hole Compatibility: Most 4" factory speakers use four mounting screws, however, in some vehicles, only two are used. The DB402's mounting tabs can be removed, allowing installation in 4-hole or 2-hole applications. Please enter your vehicle information to confirm fit.

Marine Certification: Polk speakers are marine certified, making them a good choice for boats in fresh water, convertibles, motorcycles, ATVs, and other applications where the speaker might get wet. Because they have coated steel baskets and the terminals and crossover components are not covered, we do not recommend using them in salt water environments.

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