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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 2025 K4 close

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Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
PRO-X Series (40)
Reference Series (34)
Punch Series (21)
S Series (18)
V Series (18)
A Series (16)
Cento Series (16)
Polk DB+ Series (16)
Dieci Series (15)
Kappa Series (15)
Mille Pro Series (15)
Power Series (15)
Primus Series (15)
Zeus Series (15)
N-Series (14)
PNW Series (14)
Prime Series (14)
XED Series (14)
ZXI Series (14)
Thunder Series (13)
Stage Series (12)
HED Series (11)
G-Series (TSG) (10)
DRVN Series (9)
Elite Series (9)
GX Series (9)
SPL (9)
Terminator Series (9)
Uno Series (9)
eXcelon Series (8)
Premium Series (8)
X Series (8)
CS Series (7)
GS Series (7)
PRO Series (7)
PRO-SM Series (7)
Stadium (7)
Status Series (7)
DMD Series (6)
HEX Series (6)
R Series (6)
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Club Series (5)
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Apocalypse Series (4)
E Series (4)
PRO-ZT Series (4)
D-Series (3)
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PRO-HY Series (3)
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TNT Series (3)
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Arena Series (1)
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GT7 Series (1)
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Cerwin Vega H735 with Sound Damping

500W Peak (50W RMS) 3.5" HED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

H735_SDSK2 big
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Cerwin Vega H735 with Sound Damping

500W Peak (50W RMS) 3.5" HED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 250 watts Peak Each, 25 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohm
• Sensitivity: 84.5 dB

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82
List price $90.73
-17% $74.98

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• 250 watts Peak Each, 25 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohm
• Sensitivity: 84.5 dB

JBL Club 422F (SPKCB422FAM) with Sound Damping

210W Peak (70W RMS) 4" Club Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

CLUB422FAM_SDBSK2 big
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JBL Club 422F (SPKCB422FAM) with Sound Damping

210W Peak (70W RMS) 4" Club Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 105 watts Peak Each, 35 watts RMS Each
• 3/4" Edge-driven Silk Dome Tweeters
• UV-Treated Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

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48
List price $148.69
-43% $84.98

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• 105 watts Peak Each, 35 watts RMS Each
• 3/4" Edge-driven Silk Dome Tweeters
• UV-Treated Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

Hertz MLK165.3 with Sound Damping

300W Peak (150W RMS) 6.5" Mille Legend Series 2-Way 4 Ohm component speaker system + NVX SDSK2 Sound Damping

MLK1653_SDSK2 big
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Hertz MLK165.3 with Sound Damping

300W Peak (150W RMS) 6.5" Mille Legend Series 2-Way 4 Ohm component speaker system + NVX SDSK2 Sound Damping

• 150 Watts Max Each, 75 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 91 dB

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48
List price $1193.74
-11% $1,064.98

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• 150 Watts Max Each, 75 Watts RMS Each
• Pressed-pulp cone with cotton fibers cone material
• Tetolon Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 91 dB

Infinity REF507CF with Sound Damping

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

REF507CF_SDSK2 big
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Infinity REF507CF with Sound Damping

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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48
List price $268.69
-13% $234.94

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• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

DS18 PRO-FR69NEO with Speaker Installation Kit

Includes: 6.5” Water resistant Cone Mid-Range Loudspeaker , 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

PRO-CF6.2NR, FRING65, SDRLR1, SDSK2, BTK106 big
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DS18 PRO-FR69NEO with Speaker Installation Kit

Includes: 6.5” Water resistant Cone Mid-Range Loudspeaker , 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 200W RMS 6.5” PRO-M Series Water resistant Cone Mid-Range Loudspeaker
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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Fitment unknown for your K4

184
List price $288.66
-11% $256.75

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• 200W RMS 6.5” PRO-M Series Water resistant Cone Mid-Range Loudspeaker
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

JBL GT7-5C with Sound Damping

270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

GT75C_SDBSK2 big
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JBL GT7-5C with Sound Damping

270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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51
List price $168.69
-20% $134.94

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• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Hertz CK 165 with Sound Damping

285W Peak (95W RMS) 6.5" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

CK165_SDSK2 big
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Hertz CK 165 with Sound Damping

285W Peak (95W RMS) 6.5" Cento Series 2-Way Component Speaker system + NVX SDSK2 Sound Damping

• 142 Watts Max Each, 45 Watts RMS Each
•Semi Pressed Paper-Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2"

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49
List price $498.74
-17% $414.98

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• 142 Watts Max Each, 45 Watts RMS Each
•Semi Pressed Paper-Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 93 dB
• Mounting Depth: 2"

AudioControl PNW-65 with Sound Damping

200W Peak (150W RMS) 6.5″ PNW Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

PNW65_SDSK2 big
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AudioControl PNW-65 with Sound Damping

200W Peak (150W RMS) 6.5″ PNW Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

• 100 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.9 dB

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51
List price $297.74
-8% $273.99

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• 100 watts Peak Each, 50 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.9 dB

Diamond Audio H65A with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

H65A_SDSK2 big
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Diamond Audio H65A with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

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48
$784.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Hertz X690 with Installation Accessories

680W Peak (170W RMS) 6x9” Uno Series 2-way Coaxial Speakers + 6"x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

X690_ACC_KIT big
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Hertz X690 with Installation Accessories

680W Peak (170W RMS) 6x9” Uno Series 2-way Coaxial Speakers + 6"x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 340 watts Peak Each, 85 watts RMS Each
• 3/4" Neodymium Dome Tweeters
• Water Resistance Paper Cone cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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232
List price $202.71
-26% $149.85

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• 340 watts Peak Each, 85 watts RMS Each
• 3/4" Neodymium Dome Tweeters
• Water Resistance Paper Cone cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Infinity Primus 603CF (PR603CF) with Sound Damping

360W Peak (120W RMS) 6.5" Primus Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

PR603CF_SDSK2 big
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Infinity Primus 603CF (PR603CF) with Sound Damping

360W Peak (120W RMS) 6.5" Primus Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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49
List price $178.69
-19% $144.94

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• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Cerwin-Vega CVP65 with Sound Damping

300W Peak (150W RMS) 6.5" PRO Series Full Range Coaxial Car Speaker + NVX SDSK2 Sound Damping

CVP65_SDSK2 big
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Cerwin-Vega CVP65 with Sound Damping

300W Peak (150W RMS) 6.5" PRO Series Full Range Coaxial Car Speaker + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 93 dB

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50
List price $72.73
-18% $59.98

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• 300 watts Peak Each, 150 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 93 dB

Diamond Audio MP654 with Sound Damping

300W Peak (150W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker - Pair + NVX SDSK2 Sound Damping

MP654_SDSK2 big
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Diamond Audio MP654 with Sound Damping

300W Peak (150W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker - Pair + NVX SDSK2 Sound Damping

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

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51
List price $458.73
$454.98

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• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Diamond Audio DES525 with Sound Damping

200W Peak (100W RMS) 5.25" Elite Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DES525_SDSK2 big
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Diamond Audio DES525 with Sound Damping

200W Peak (100W RMS) 5.25" Elite Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 100 watts Peak Each, 50 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite Fiber Weave cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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48
$214.98

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• 100 watts Peak Each, 50 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite Fiber Weave cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Infinity REF507CF with Installation Accessories

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

REF507CF_ACC_KIT big
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Infinity REF507CF with Installation Accessories

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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228
List price $322.66
-19% $260.51

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• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Hertz SV 250.1 with Sound Damping

500W Peak (150W RMS) 10" SPL Show Series 4-ohms midrange speaker + NVX SDSK2 Sound Damping

SV2501_SDSK2 big
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Hertz SV 250.1 with Sound Damping

500W Peak (150W RMS) 10" SPL Show Series 4-ohms midrange speaker + NVX SDSK2 Sound Damping

• 500 watts Peak Each, 150 watts RMS Each
• 1" Balanced Dome Tweeters
• water-repellent pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 101 dB

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48
List price $308.74
-14% $264.98

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• 500 watts Peak Each, 150 watts RMS Each
• 1" Balanced Dome Tweeters
• water-repellent pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 101 dB

Alpine S2-S68 with Sound Damping

460W Peak (150W RMS) 6x8" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

S2S68_SDSK2 big
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Alpine S2-S68 with Sound Damping

460W Peak (150W RMS) 6x8" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 230 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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51
List price $198.74
-17% $164.94

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• 230 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Hertz DCX160.3 with Sound Damping

240W Peak (120W RMS) 6” Power Series Full Range Speaker + NVX SDSK2 Sound Damping

DCX1603_SDSK2 big
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Hertz DCX160.3 with Sound Damping

240W Peak (120W RMS) 6” Power Series Full Range Speaker + NVX SDSK2 Sound Damping

• 120 Watts Max Each, 60 Watts RMS Each
• Water-repellent pressed paper Cone
• Neodymium Tweeter magnet
• 4 Ohm Impedance
• Sensitivity: 93 dB

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48
List price $168.74
-14% $144.98

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• 120 Watts Max Each, 60 Watts RMS Each
• Water-repellent pressed paper Cone
• Neodymium Tweeter magnet
• 4 Ohm Impedance
• Sensitivity: 93 dB

Earthquake Sound VTEK-693 with Installation Accessories

700W RMS 6" x 9" 3-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

VTEK-693, XBAF69, SDSK, SDRLR1, BTK106 big
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Earthquake Sound VTEK-693 with Installation Accessories

700W RMS 6" x 9" 3-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 6" x 9" 3-way VTEK Series Coaxial Speakers
• Glass Fiber Cone
• 3/4" Silk Dome Tweeter
• 30mm KSV Voice Coil
• Speaker Grilles Included
• 4 Ohm Impedance
• PistonMax Technology

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Fitment unknown for your K4

190
List price $321.71
-21% $255.67

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• 6" x 9" 3-way VTEK Series Coaxial Speakers
• Glass Fiber Cone
• 3/4" Silk Dome Tweeter
• 30mm KSV Voice Coil
• Speaker Grilles Included
• 4 Ohm Impedance
• PistonMax Technology

JBL Stage3 6427 (STAGE36427AM) with Sound Damping

350W Peak (70W RMS) 4x6” Stage3 Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

STAGE36427AM_SDBSK2 big
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JBL Stage3 6427 (STAGE36427AM) with Sound Damping

350W Peak (70W RMS) 4x6” Stage3 Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 175 watts Peak Each, 35 watts RMS Each
• Edge-driven dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 91 dB

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49
List price $128.69
-18% $104.94

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• 175 watts Peak Each, 35 watts RMS Each
• Edge-driven dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 91 dB

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

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