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  1. Home
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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 2008 528i 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.
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Diamond Audio MSPRO8 with Speaker Installation Kit

Includes: (2) 8" Midrange Component Speaker, 2 Piece Speaker Baffles, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

MSPRO8, XBAF8, SDRLR1, SDSK2, BTK106 big
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Diamond Audio MSPRO8 with Speaker Installation Kit

Includes: (2) 8" Midrange Component Speaker, 2 Piece Speaker Baffles, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

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142
List price $452.70
-10% $405.80 /pair

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• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

DS18 PRO-X8BM with Speaker Installation Kit

Includes: (2) 8” Mid-Range Loudspeaker, 2 Piece Silicone Rubber Speaker Ring Kit, Sound Damping Kit, Rubber Roller

(2) PRO-X8BM, XBAF8, SDSK2, SDRLR1 big
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DS18 PRO-X8BM with Speaker Installation Kit

Includes: (2) 8” Mid-Range Loudspeaker, 2 Piece Silicone Rubber Speaker Ring Kit, Sound Damping Kit, Rubber Roller

• 550 watts Max
• 275 watts RMS
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB
• Mounting Depth: 3.11"

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115
List price $225.61
-16% $188.94

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• 550 watts Max
• 275 watts RMS
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB
• Mounting Depth: 3.11"

NVX - Worth the Envy - Direct to Consumer Car Audio

DS18 PRO-FR6NEO with Speaker Installation Kit

Includes: 8” Mid-Range Loudspeaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

PRO-HY8.4B, XBAF8, SDRLR1, SDSK2, BTK106 big
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DS18 PRO-FR6NEO with Speaker Installation Kit

Includes: 8” Mid-Range Loudspeaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 250W RMS 8” PRO-HY Series Hybrid Mid-Range Speaker with Compression Horn Tweeter
• 2 Piece Silicone Rubber Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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143
List price $346.61
-11% $309.90

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• 250W RMS 8” PRO-HY Series Hybrid Mid-Range Speaker with Compression Horn Tweeter
• 2 Piece Silicone Rubber Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

DS18 PRO-ZXI8M with Speaker Installation Kit

350W RMS 8" 8-Ohm Midrange Speakers + 8" Speaker Baffles, Sound Dampening, Roller, and Panel Removal

(2)PRO-ZXI8M, XBAF8, SDSK2, SDRLR1, BTK106 big
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DS18 PRO-ZXI8M with Speaker Installation Kit

350W RMS 8" 8-Ohm Midrange Speakers + 8" Speaker Baffles, Sound Dampening, Roller, and Panel Removal

• 700 watts Peak Each, 350 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 99 dB

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142
List price $232.61
-16% $195.90

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• 700 watts Peak Each, 350 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 99 dB

(2) DS18 PRO-X8.4BM with Speaker Installation Kit

Includes: (2) 8” Mid-Range Loudspeaker, 2 Piece Silicone Rubber Speaker Ring Kit, Sound Damping Kit, Rubber Roller

(2) PRO-X8.4M, XBAF8, SDSK2, SDRLR1 big
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(2) DS18 PRO-X8.4BM with Speaker Installation Kit

Includes: (2) 8” Mid-Range Loudspeaker, 2 Piece Silicone Rubber Speaker Ring Kit, Sound Damping Kit, Rubber Roller

• 275W RMS 8” PRO-X Series Mid-Range Speakers
• 2 Piece Silicone Rubber Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Sound Dampening Rubber Roller

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115
List price $213.61
-17% $177.06

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• 275W RMS 8” PRO-X Series Mid-Range Speakers
• 2 Piece Silicone Rubber Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Sound Dampening Rubber Roller

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

DB402, FRING4, SDSK2, SDRLR1, BTK106 big
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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

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

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148
List price $171.70
-26% $126.36 /pair

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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

AudioControl PNW-4 with Sound Damping

150W Peak (50W RMS) 4″ PNW Series High-fidelity 2-way 3-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

PNW4_SDSK2 big
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AudioControl PNW-4 with Sound Damping

150W Peak (50W RMS) 4″ PNW Series High-fidelity 2-way 3-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

• 75 watts Peak Each, 25 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm

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List price $207.74
-11% $183.99

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• 75 watts Peak Each, 25 watts RMS Each
• 1" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm

Limited time!

NVX VSP4 with Speaker Installation Kit

450W Peak (150W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters

VSP4, FRING4, SDRLR1, SDSK2, BTK106 big
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NVX VSP4 with Speaker Installation Kit

450W Peak (150W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters

• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

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Install kits available for most vehicles

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161
List price $143.70
-33% $96.59 /pair

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• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

Hertz DCX100.3 with Speaker Installation Kit

4" Dieci Series 2-Way Coaxial Car Speakers + NVX 4" Speaker Baffles, Sound Dampening, Heavy Duty Roller and Panel Removal Kit

DCX 100.3, FRING4, SDSK2, SDRLR1 big
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Hertz DCX100.3 with Speaker Installation Kit

4" Dieci Series 2-Way Coaxial Car Speakers + NVX 4" Speaker Baffles, Sound Dampening, Heavy Duty Roller and Panel Removal Kit

• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

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Install kits available for most vehicles

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146
List price $221.71
-25% $166.52 /pair

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• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

JBL Club 422F with Speaker Installtion Kit

70W RMS 4" 2-Way 3-Ohms Coaxial Speakers with Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

Club 422F, FRING4, SDSK2, SDRLR1, BTK106 big
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JBL Club 422F with Speaker Installtion Kit

70W RMS 4" 2-Way 3-Ohms Coaxial Speakers with Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 105 watts Max Each, 35 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB @ 2.83V
• Mounting Height: 0.604"

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Install kits available for most vehicles

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117
List price $202.66
-47% $107.75 /pair

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• 105 watts Max Each, 35 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB @ 2.83V
• Mounting Height: 0.604"

Hertz SV 200 NEO with Installation Accessories

200W RMS 8" 4 Ohms Car Speaker Midrange Driver with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

SV 200 NEO, XBAF8, SDSK2, SDRLR1, BTK106 big
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Hertz SV 200 NEO with Installation Accessories

200W RMS 8" 4 Ohms Car Speaker Midrange Driver with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 250 Watts Peak each
• 100 Watts RMS each
• Water repellent pressed paper cone material
• Neodymium Magnet
• 4 ohm impedance
•Nature Proof

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142
List price $732.71
-19% $595.80 /pair

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• 250 Watts Peak each
• 100 Watts RMS each
• Water repellent pressed paper cone material
• Neodymium Magnet
• 4 ohm impedance
•Nature Proof

Polk Audio DB402 with Sound Dampening Kit

270W Peak (90W RMS) 4" 2-way Coaxial Speakers with Sound Dampening

SDSK2,DB402 big
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Polk Audio DB402 with Sound Dampening Kit

270W Peak (90W RMS) 4" 2-way Coaxial Speakers with Sound Dampening

• 135 Watts Max Each, 45 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.79"

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Install kits available for most vehicles

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52
List price $118.73
-24% $90.00 /pair

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• 135 Watts Max Each, 45 Watts RMS Each
• 0.75" shallow tweeter design
• Polypropylene UV tolerant cone
• 4 Ohm Impedance
• Sensitivity: 90dB
• Mounting Depth: 1.79"

DS18 PRO-GM8.4 with Speaker Installation Kit

190W RMS 8" 4-Ohm Midrange Car Speaker + 8" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

(2)PRO-GM8.4, XBAF8, SDSK2, SDRLR1, BTK106 big
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DS18 PRO-GM8.4 with Speaker Installation Kit

190W RMS 8" 4-Ohm Midrange Car Speaker + 8" Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 580 watts Peak Each, 190 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 94 dB

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142
List price $152.61
-24% $115.71

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• 580 watts Peak Each, 190 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 94 dB

Cerwin Vega XED42 with Speaker Installation Kit

40W RMS 4" 2-Way Coaxial Car Speakers + 4” Foam Speaker Rings + Sound Dampening, Roller and Panel Removal Kit

XED42_ACC_KIT big
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Cerwin Vega XED42 with Speaker Installation Kit

40W RMS 4" 2-Way Coaxial Car Speakers + 4” Foam Speaker Rings + Sound Dampening, Roller and Panel Removal Kit

• 250 watts Peak Each, 20 watts RMS Each
• 1" Metallic Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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Install kits available for most vehicles

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148
List price $119.70
-36% $76.52 /pair

In stock

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• 250 watts Peak Each, 20 watts RMS Each
• 1" Metallic Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Cerwin-Vega CVP8 with Speaker Installation Kit

170W RMS 8” Full Range Coaxial Car Speaker + 8” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

CVP8(2), XBAF8, SDSK2, SDRLR1, BTK106 big
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Cerwin-Vega CVP8 with Speaker Installation Kit

170W RMS 8” Full Range Coaxial Car Speaker + 8” Speaker Baffles + Sound Dampening, Roller and Panel Removal Kit

• 350 watts Peak Each, 170 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 95 dB

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Install kits available for most vehicles

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142
List price $202.69
-28% $145.79

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• 350 watts Peak Each, 170 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 95 dB

Diamond Audio DMD42 with Speaker Installation Kit

350W Peak (175W RMS) 8” Machete Series Midbass + Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

MW-80, XBAF8, SDSK2, SDRLR1, BTK106 big
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Diamond Audio DMD42 with Speaker Installation Kit

350W Peak (175W RMS) 8” Machete Series Midbass + Speaker Baffles, Sound Dampening, Roller, and Panel Removal Kit

• 175 watts Max
• 87.5 watts RMS
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93.50 dB
• Mounting Depth: 2.95"

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142
List price $182.61
-20% $145.71 /pair

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• 175 watts Max
• 87.5 watts RMS
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93.50 dB
• Mounting Depth: 2.95"

JBL Stage 3 427F with Speaker Installation Kit

300Peak (60W RMS) 4" Stage 3 Series 2-Way Coaxial Car Speakers

STAGE3427FAM, FRING4, SDSK2, SDRLR2, BTK106 big
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JBL Stage 3 427F with Speaker Installation Kit

300Peak (60W RMS) 4" Stage 3 Series 2-Way Coaxial Car Speakers

• 150 watts Peak Each, 30 watts RMS Each
• 3/4" Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

Save 15% Off Package Deals at Checkout!
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Install kits available for most vehicles

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Fits select locations in your 528i.
Add vehicle details to confirm exact location.
120
List price $162.66
-34% $107.71 /pair

In stock

Only 3 Left!

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• 150 watts Peak Each, 30 watts RMS Each
• 3/4" Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 90 dB

Pioneer TS-G1020S with Speaker Installation Accessories

420W Max (120W RMS) 4" G-Series 2-Way Coaxial Car Speakers

TS-G1020S, FRING4, SDSK2, SDRLR1, BTK106 big
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Pioneer TS-G1020S with Speaker Installation Accessories

420W Max (120W RMS) 4" G-Series 2-Way Coaxial Car Speakers

• 210W Max Each, 60W RMS Each
• 1-3/16 Balanced Dome Tweeter
• Injection Molded Polypropylene with Mica Cone
• 4 ohm Impedance
• Sensitivity: 87dB
• Mounting Depth: 1-3/4"

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Fits select locations in your 528i.
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146
List price $136.71
-37% $85.52 /pair

In stock

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• 210W Max Each, 60W RMS Each
• 1-3/16 Balanced Dome Tweeter
• Injection Molded Polypropylene with Mica Cone
• 4 ohm Impedance
• Sensitivity: 87dB
• Mounting Depth: 1-3/4"

DS18 ZXI-44 with Speaker Accessories

100W RMS 4" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

ZXI-44, FRING4, SDSK2, SDRLR1, BTK106 big
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DS18 ZXI-44 with Speaker Accessories

100W RMS 4" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

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Fits select locations in your 528i.
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144
List price $152.66
-23% $117.55 /pair

In stock

Only 1 Left!

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• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Soundstream RS.4 with Installation Accessories

160W Peak (80W RMS) 4" Reserve Series 2-Way Coaxial Car Speakers

RS.4, FRING4, SDSK2, SDRLR1, BTK106 big
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Soundstream RS.4 with Installation Accessories

160W Peak (80W RMS) 4" Reserve Series 2-Way Coaxial Car Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" Woven Poly-nylon Synthetic Soft Dome Tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 84.3 dB

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Install kits available for most vehicles

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252
List price $114.70
-43% $65.82 /pair

In stock

Only 1 Left!

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• 80 watts Peak Each, 40 watts RMS Each
• 3/4" Woven Poly-nylon Synthetic Soft Dome Tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 84.3 dB

NVX - Worth the Envy - Direct to Consumer Car Audio
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    Shop your 2008 528i
    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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