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Polk Audio DB402 (DB 402)

270W Peak (90W RMS) 4" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

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• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Learn more about the db402
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List price $99.99
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$90.00

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Current Promotions (8 offers)


This offer cannot be combined with any other coupons or offers.

Polk Audio DB402 (DB 402)

30% off


Priced separately $132 99

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This offer cannot be combined with any other coupons or offers.

Polk Audio DB402 (DB 402)

30% off


Priced separately $155 99

Promo Savings of $19 80

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Polk Audio DB402 (DB 402)

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Polk Audio DB402 (DB 402)

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Get 40% Off NVX SDSK2 Sound Dampening Speaker Kit with your Speaker purchase! Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

Polk Audio DB402 (DB 402)

40% off


Priced separately $104 99

Promo Savings of $6 00

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Product Highlights


• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Description


Polk Audio brand icon

Authorized dealer


Polk Audio DB402

Upgrade your Car, Boat, Motorcycle, or ATV’s factory speaker set with the DB+ Series to get that legendary Polk sound wherever life takes you. You’ll get loud, crystal clear sound with effortless bass from a marine certified speaker that’s easy to install and built to last.

The DB+ Series is IP56 rated so they are dirt- and water-resistant. They also have been tested for salt-fog, UV and humidity. A big part of that marine certification also means that each speaker has a non-corrosive plastic grille, a polypropylene UV tolerant cone, waterproof inner and outer surrounds, and stainless steel mounting hardware, ensuring that they are fully protected against the elements.


Product Details:

  • 4" Polk DB+ Series 2-way Coaxial Car, ATV and Marine Speakers
  • Power Handling:
    • Peak: 270 watts per pair / 135 watts each
    • RMS: 90 watts per pair / 45 watts each
  • IP56 marine certified
  • Tested for salt-fog, UV & humidity
  • Polypropylene cone material
  • Rubber speaker surround
  • 3/4" Silk Dome tweeters
  • Universal drop-in fit with zero tweeter profusion
  • Top-mount Depth: 1.79"
  • Cutout Dimensions: 4.09"
  • Impedance: 4 ohm
  • Frequency Response: 60 - 22000 Hz
  • Sensitivity: 90 dB
  • 2 0.55" speaker grilles included
  • Authorized Internet Dealer
  • MFR #: DB402
  • 1-year Manufacturer's Warranty

  • Priced Per Pair

PDF IconPolk Audio DB402 owner’s manual

Product history:

Polk Audio DB402 thumbnail
(newest, current model)
Polk Audio db401 thumbnail
(previous model, replaced by Polk Audio DB402 (DB 402))
Polk Audio db400 thumbnail
(previous model, replaced by Polk Audio db401)

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Specifications & Details


Speaker Specifications
Series
Polk DB+ Series
Priced Per
Pair
Number of Speakers
2
Speaker Size
4"
Design
2-way Coaxial
Tweeter Design
Dome
Tweeter Size
3/4"
Tweeter Composition
Silk
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Peak Power Handling
135 watts
RMS Power Handling
45 watts
Total PEAK Per Pair/Set
270 watts
Total RMS Per Pair/Set
90 watts
Sensitivity
90 dB
Frequency Response
60 - 22000 Hz
Impedance (Per Voice Coil)
4 ohm
Shallow Mount Installation
No
Top-Mount Depth (Mounting Depth)
1.79"
Bottom-Mount Depth
2"
Cutout Dimensions
4.09"
CTA-2031 Compliant
No
General specifications
Marine Certified
Yes
Hi-Res Certified
No
Color
Black
Speaker Grilles
Yes
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Speakers
Speakers (2)
Grilles (2, attached)
Mounting screws (8)
Mounting clips (8)
Speaker connection cables (2)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

DB402

Weight:

3.50lbs

Internal SKU:

db402

Internal Product ID:

112173

Product and How-to Videos


Customer Ratings & Reviews


Polk Audio DB402 (DB 402) thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Great speaker

10 out of 10 great sound out of these little speaker and tweeter are very crisp and detail...

By Ross on June 26, 2016

33 found this helpful


Sound good

These speakers sound pretty good on my Electra glide. They are not as loud as I would like, but they are louder than I expected. Pretty good sound for only 4".

By Joe on May 24, 2017

31 found this helpful


Polk Audio DB 402

Bought these speakers to replace Merrill speakers that kept shorting out they didn't last a year. I was blown away by the sound quality of these over the Merrill and these were about 20 dollars cheaper, they are now a year old and sound as good as when I bought them.
I am now a Polk audio fan!

By Ron on December 3, 2016

30 found this helpful


By Christian on May 26, 2025 Checkmark Icon Verified purchase




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