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Polk Audio DB402 DB+ with Installation Accessories

90W RMS 4" 2-way Car & Marine Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

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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_acc_kit
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List price $171.70
Thanks , You Pay:
-26%

$126.36

/pair  with warranty
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Description


Polk Audio brand icon

Authorized dealer

Polk Audio DB402 (DB 402)

270W Peak (90W RMS) 4" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
Quantity: 1

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

NVX FRING4

Universal 4" Self-Adhesive Foam Speaker Baffle Ring Kit (Pack of 2)
Quantity: 1

Product Details:

  • 2-Piece 4" Self-Adhesive Foam Speaker Baffle Ring Kit
  • Contains 2 waterproof automotive-grade high-density foam strips
  • Strips backed by adhesive to acoustically seal speakers
  • Prevents front and rear wave cancellation
  • Reduces panels vibrations
  • Improves midbass response
  • Easy peel and stick installation
  • Designed for use with 4" speakers
  • Foam Thickness: 1"
  • Base Foam Thickness: 1"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

NVX SDBSK2 Premium Stealth Black

91 mil 1.38 sq ft Car Speaker Sound Deadening Kit (Two 10" x 10" Sheets)
Quantity: 1

Product Details:

  • 1.38 square feet sound deadening kit
  • Solid black design for any stealth car audio installation
  • Core is based with 100% pure butyl rubber to withstand extreme heat
  • No asphalt, tar, or cheap fillers - will not outgas, melt or fall off
  • Waterproof barrier protects against moisture damage and mechanical oils
  • Up to 30% thicker than cheap 50–80 mil alternatives
  • Flexible aluminum backing contours tightly to complex door panels and vehicle curves with ease
  • Structural damping kills unwanted sheet metal resonance caused by heavy mid bass
  • Seals the door cavity to drastically increase speaker bass response and clarity
  • Lowers cabin ambient noise so you hear your music instead of the highway
  • Reflects radiant heat to help keep your vehicle interior cooler
  • Simple three step peel and stick installation process makes upgrading your sound quick
  • Combine this kit with NVX SDRLR1 Rubber Roller for easy installation
  • Pack includes two 10" x 10" sheets
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Specifications:

  • Install Location: Speaker
  • Material Thickness: 0.091 (2.3 mm)
  • Amount of Material: 1.38 square feet
  • Material Use: Vibration Dampener
  • Optimal Performance Temperature: 14°F to 140°F
  • Rated Temperature Range: -75°F to 450°F
  • Application Temperature: 60°F to 90°F
  • Dimensions (each piece): 10"L x 10"W

NVX SDRLR2

Universal Professional Heavy Duty Roller for Sound Deadening Mat
Quantity: 1

Product Details:

  • Works flawlessly with NVX sound deadening mats and other major insulation brands
  • Professional and heavy duty roller tool (used at car stereo shops worldwide)
  • Unique squared rollers provides more pressure for better installation
  • Allows for even pressure of application, reduce air bubbles and achieves the good adhesion
  • 2" solid, soft rubber roller contours perfectly without scratching surfaces
  • Features a thick sturdy plastic construction for comfortable handling
  • Product dimensions:
    • Roller Size: 1.89" H x 1.38" D
    • Handle Size: 5.24" L x1.06" D
    • Total Length: 7.28" L
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Belva BTK105

Five Piece Installer's Panel Removal Installation Tool Kit for Stereo, Speakers and Car Audio Installs
Quantity: 1

Stop wrapping screwdrivers in electrical tape and hoping for the best. If you want to make your next installation smooth, and keep your interior immaculate, pick up a set of these Belva BTK105 Panel Removal Tools.

This set of nylon plastic tools make your job easier when it comes to pulling off those interior pieces, but it also keeps you from marring your finish. When you're done with the job, no one will know you ever pulled anything off in the first place. Make your next audio improvement a cinch with the Belva BTK105 Panel Removal Tools.

General Features:

  • Five Piece Installer's Removal Tool Kit
  • Durable Nylon Plastic Pry & Chisel Tool Set
  • Helps with car stereo installation
  • Use for dash & trim removal
  • Perfect for door panel removal
  • Use to remove vehicles emblems
  • Use to remove rubber grommets
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty


Product history:

Polk Audio DB402, FRING4, SDSK2, SDRLR1, BTK106 thumbnail
(newest, current model)
Polk Audio db401 thumbnail
(previous model, replaced by Polk Audio DB402 DB+ with Installation Accessories)
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
Mounting Brackets/Hardware
Speakers (2)
Grilles (2, detached)
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, FRING4, SDSK2, SDRLR1, BTK106

Weight:

7.91lbs

Internal SKU:

db402_acc_kit

Internal Product ID:

200620

Customer Ratings & Reviews


Polk Audio DB402 DB+ with Installation Accessories thumbnail image

5 star
90%
4 star
7%
3 star
2%
2 star
1%
1 star
0%



Durability
4.8
Value
4.9
Features
4.9
Design
4.9
Usability
5

Customer Photos & Videos


Customer Reviews

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Five Piece Installer Panel Removal Tool Kit for Car Stereo/Audio (Belva BTK105)

The following review is for BTK105, which is a part of the bundle you are viewing.

Good for the price, could be better, does what it’s supposed to

By Anonymous on May 29, 2018

68 found this helpful


Bulky

The following review is for BTK105, which is a part of the bundle you are viewing.

Bulky but overall decent product and not great in tight spaces

By OVO on October 10, 2016 Checkmark Icon Verified purchase

64 found this helpful


Nifty

The following review is for BTK105, which is a part of the bundle you are viewing.

Nice to have these to use instead of a screwdriver! So I don't mark up my doors, dash, or paint. A lot sturdier than they look as well.

By eric on May 29, 2020 Checkmark Icon Verified purchase

63 found this helpful


Great tools

The following review is for BTK105, which is a part of the bundle you are viewing.

These tools made my project really easy. They are great value and quality.

By Juan on November 15, 2017

63 found this helpful


Works great.

The following review is for BTK105, which is a part of the bundle you are viewing.

Used these on the wife's van (multiple panels) and my 68 fastback. The tools work like a charm. No scratches or issues on my panels and no broken tools is a victory all the way around.

By Jose on March 14, 2016

63 found this helpful


Great deal

The following review is for SDBSK2, which is a part of the bundle you are viewing.

Got this product free with the purchase of a pair of speakers it helps out a lot looks more professional and sounds cleaner definitely give it a try for your next project.

By Anonymous on August 8, 2019

62 found this helpful


Don't go without it

The following review is for SDBSK2, which is a part of the bundle you are viewing.

This really helps with overall sound quality, especially mid-bass in my experience. NVX offers excellent quality at better prices are than other popular sound deadening brands.

By Anonymous on September 9, 2019 Checkmark Icon Verified purchase

60 found this helpful


Average

The following review is for BTK105, which is a part of the bundle you are viewing.

Two of the tools broke on first use. The tips of some tools are too thin.

By Christopher on February 4, 2016

59 found this helpful


Very Thick Dynamat

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This product is very thick compared to cheap versions. Priced excellent. If you want to reduce any vibration or road sound, choose this!

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Five Piece Installer Panel Removal Tool Kit for Car Stereo/Audio (Belva BTK105)

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Great little tool kit worked great for what I needed.

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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.