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  1. Home
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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 2025 S4 close

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Product Fitment Type
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.
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Hifonics ZS65CXS with Sound Damping

600W Peak (100W RMS) 6.5" Zeus Series 2-Way Coaxial Car Speakers with Sound Damping

ZS65CXS_SDSK2 big
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Hifonics ZS65CXS with Sound Damping

600W Peak (100W RMS) 6.5" Zeus Series 2-Way Coaxial Car Speakers with Sound Damping

• 300 watts Peak Each, 50 watts RMS Each
• 1" Neo-Mylar Dome Tweeters
• Alpha-Cellulose cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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65
List price $53.73
-11% $47.98

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• 300 watts Peak Each, 50 watts RMS Each
• 1" Neo-Mylar Dome Tweeters
• Alpha-Cellulose cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Infinity Primus 603F (PR603F) with Sound Damping

300W Peak (100W RMS) 6.5” Primus Series 2-Way Coaxial Speakers with Sound Damping

PR603F_SDSK2 big
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Infinity Primus 603F (PR603F) with Sound Damping

300W Peak (100W RMS) 6.5” Primus Series 2-Way Coaxial Speakers with Sound Damping

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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54
List price $128.69
-26% $94.94

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• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 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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47
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

JBL CLUB 34F (JBLSPKCB34F) with Sound Damping

150W Peak (50W RMS) 3.5" Club Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

CLUB34F_SDBSK2 big
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JBL CLUB 34F (JBLSPKCB34F) with Sound Damping

150W Peak (50W RMS) 3.5" Club Series 2-way 3-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 75 watts Peak Each, 25 watts RMS Each
• Silk Edge-driven Dome tweeters
• Injection Molded Polypropylene with UV Protection cone material
• Impedance: 3 ohm
• Sensitivity: 89 dB

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51
List price $128.69
-26% $94.94

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• 75 watts Peak Each, 25 watts RMS Each
• Silk Edge-driven Dome tweeters
• Injection Molded Polypropylene with UV Protection cone material
• Impedance: 3 ohm
• Sensitivity: 89 dB

MB Quart FKB 110 (FKB110) with Sound Damping

140W Peak (70W RMS) 4" Quart Formula Series 2-way 4-ohm Coaxial Car Speakers. + NVX SDBSK2 Premium Sound Damping

FKB110_SDBSK2 big
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MB Quart FKB 110 (FKB110) with Sound Damping

140W Peak (70W RMS) 4" Quart Formula Series 2-way 4-ohm Coaxial Car Speakers. + NVX SDBSK2 Premium Sound Damping

• 70 watts Peak Each, 35 watts RMS Each
• 1" Aluminum Dome Tweeters
• Lightweight thermal-formed polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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47
List price $65.73
-32% $44.98

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• 70 watts Peak Each, 35 watts RMS Each
• 1" Aluminum Dome Tweeters
• Lightweight thermal-formed polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

MB Quart FKB 116 (FKB116) with Sound Damping

240W Peak (120W RMS) 6.5" Formula Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

FKB116_SDBSK2 big
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MB Quart FKB 116 (FKB116) with Sound Damping

240W Peak (120W RMS) 6.5" Formula Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome tweeters
• Lightweight Thermal-formed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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59
List price $98.73
-49% $49.98

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• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome tweeters
• Lightweight Thermal-formed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

DS18 PRO-X6.4BM (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX64BM_SDBSK2 big
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DS18 PRO-X6.4BM (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 500 watts Peak Each, 250 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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48
List price $71.69
-12% $63.44

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• 500 watts Peak Each, 250 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

DS18 PRO-SM6.2 (Sold Individually) with Sound Damping

400W Peak (200W RMS) 6.5” PRO-SM Series Shallow Water-Resistant Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROSM62_SDBSK2 big
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DS18 PRO-SM6.2 (Sold Individually) with Sound Damping

400W Peak (200W RMS) 6.5” PRO-SM Series Shallow Water-Resistant Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 400 watts Peak Each, 200 watts RMS Each
• Glossy red steel basket material
• Water-Resistant Paper material
• Impedance: 2 ohm
• Sensitivity: 95 dB

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49
List price $83.69
-10% $75.44

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• 400 watts Peak Each, 200 watts RMS Each
• Glossy red steel basket material
• Water-Resistant Paper material
• Impedance: 2 ohm
• Sensitivity: 95 dB

DS18 PRO-ZXI6M with Sound Damping

600W Peak (300W RMS) 6.5" ZXi Series 8-Ohm Midrange Car Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROZXI6M_SDBSK2 big
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DS18 PRO-ZXI6M with Sound Damping

600W Peak (300W RMS) 6.5" ZXi Series 8-Ohm Midrange Car Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 600 watts Peak Each, 300 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 97 dB

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49
List price $108.73
-21% $85.44

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• 600 watts Peak Each, 300 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 97 dB

DS18 PRO-ZT6 (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-ZT Series 4-ohm Water-Resistant Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROZT6_SDBSK2 big
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DS18 PRO-ZT6 (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-ZT Series 4-ohm Water-Resistant Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 450 watts Max, 225 watts RMS
• 1" Aluminum Alloy Bullet tweeter
• Water-Resistant Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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53
List price $114.69
-7% $106.44

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• 450 watts Max, 225 watts RMS
• 1" Aluminum Alloy Bullet tweeter
• Water-Resistant Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

NVX NSP65 with Sound Damping

540W Peak (180W RMS) 6.5" N-Series 2-Way Coaxial Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

NSP65_SDBSK2 big
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NVX NSP65 with Sound Damping

540W Peak (180W RMS) 6.5" N-Series 2-Way Coaxial Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.40"

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140
List price $126.73
-33% $84.98

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• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.40"

Pioneer TS-G1620F with Sound Damping

600W Peak (80W RMS) 6.5" G-Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TSG1620F_SDBSK2 big
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Pioneer TS-G1620F with Sound Damping

600W Peak (80W RMS) 6.5" G-Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 40 watts RMS Each
• 1-3/16" PET Balanced Dome tweeters
• IMPP (Injection Molded Polypropylene) with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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60
List price $83.74
-25% $62.99

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• 300 watts Peak Each, 40 watts RMS Each
• 1-3/16" PET Balanced Dome tweeters
• IMPP (Injection Molded Polypropylene) with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Pioneer TS-A878 with Sound Damping

120W Peak (30W RMS) 3.5" A-Series 2-way 4-ohm Coaxial Speakers for select GM, Ford and Volkswagen models + NVX SDBSK2 Premium Sound Damping

TSA878_SDBSK2 big
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Pioneer TS-A878 with Sound Damping

120W Peak (30W RMS) 3.5" A-Series 2-way 4-ohm Coaxial Speakers for select GM, Ford and Volkswagen models + NVX SDBSK2 Premium Sound Damping

• 60 watts Peak Each, 15 watts RMS Each
• Custom-fit for select GM, Ford and Volkswagen models
• 1" PEI (Polyetherimide) Dome tweeters
• Carbon Graphite IMPP Interlaced Aramid Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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78
List price $88.74
-27% $64.98

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• 60 watts Peak Each, 15 watts RMS Each
• Custom-fit for select GM, Ford and Volkswagen models
• 1" PEI (Polyetherimide) Dome tweeters
• Carbon Graphite IMPP Interlaced Aramid Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Pioneer TS-A653FH with Sound Damping

680W Peak (150W RMS) 6.5" A Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TSA653FH_SDBSK2 big
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Pioneer TS-A653FH with Sound Damping

680W Peak (150W RMS) 6.5" A Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 340 watts Peak Each, 75 watts RMS Each
• 13/16 PEI (Polyetherimide) Hard Dome tweeters
• Aramid fiber reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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48
List price $138.74
-17% $114.98

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• 340 watts Peak Each, 75 watts RMS Each
• 13/16 PEI (Polyetherimide) Hard Dome tweeters
• Aramid fiber reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Rockford Fosgate Punch P132 with Sound Damping

80W Peak (40W RMS) 3.5” Punch Series 2-way 4-ohm Full Range Speaker + NVX SDBSK2 Premium Sound Damping

09-P132_SDBSK2 big
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Rockford Fosgate Punch P132 with Sound Damping

80W Peak (40W RMS) 3.5” Punch Series 2-way 4-ohm Full Range Speaker + NVX SDBSK2 Premium Sound Damping

• 40 watts Peak Each, 20 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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90
List price $108.73
$104.98

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• 40 watts Peak Each, 20 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Hertz MLK1650.3 with Sound Damping

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

MLK16503_SDSK2 big
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Hertz MLK1650.3 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: 92 dB

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48
List price $2133.74
-10% $1,914.98

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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: 92 dB

Hertz DSK165.3 with Installation Accessories

80W RMS 6.5" 2-Way Component Speaker system with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DSK 165.3, XBAF65, SDSK2, SDRLR1, BTK106 big
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Hertz DSK165.3 with Installation Accessories

80W RMS 6.5" 2-Way Component Speaker system with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

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257
List price $317.71
-23% $243.52 /set

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• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

Rockford Fosgate Power T1650 with Sound Damping

300W Peak (150W RMS) 6.5" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

T1650_SDBSK2 big
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Rockford Fosgate Power T1650 with Sound Damping

300W Peak (150W RMS) 6.5" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Injection-molded Carbon Fiber-filled Polypropylene cone material with Vertical Attach Surround Technique (VAST)
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $238.73
$234.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Injection-molded Carbon Fiber-filled Polypropylene cone material with Vertical Attach Surround Technique (VAST)
• Impedance: 4 ohm
• Sensitivity: 88 dB

Hertz CPX 165 with Speaker Installation Kit

Includes: (2) 6.5" Woofers, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

C165, XBAF65, SDRLR1, SDSK2, BTK106 big
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Hertz CPX 165 with Speaker Installation Kit

Includes: (2) 6.5" Woofers, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 6.5" Woofers
• 4 Ohm Impedence
• 210 Watts Peak Power
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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Install kits available for most vehicles

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259
List price $317.71
-23% $243.52 /pair

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• 6.5" Woofers
• 4 Ohm Impedence
• 210 Watts Peak Power
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

Polk Audio DB6502 with Speaker Installation Kit

200W RMS 6.5" 2-way Marine/UTV Certified Component Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DB6502, XBAF65, SDSK2, SDRLR1, BTK106 big
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Polk Audio DB6502 with Speaker Installation Kit

200W RMS 6.5" 2-way Marine/UTV Certified Component Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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Install kits available for most vehicles

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263
List price $297.70
-18% $243.53 /set

In stock

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• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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    Shop your 2025 S4
    Why Use a Vehicle Fit Guide?
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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.

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