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  3. Speakers with Sound Deadening

Speakers with Sound Deadening for your 2006 325Ci 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 (32)
Reference Series (22)
S Series (16)
Cento Series (14)
A Series (12)
Mille Pro Series (12)
Primus Series (12)
Polk DB+ Series (11)
N-Series (10)
PNW Series (10)
Punch Series (10)
ZXI Series (9)
SPL (8)
X Series (8)
XED Series (8)
Power Series (7)
Prime Series (7)
PRO Series (7)
PRO-SM Series (7)
Status Series (7)
Uno Series (7)
V Series (7)
Dieci Series (6)
DRVN Series (6)
eXcelon Series (6)
GX Series (6)
Kappa Series (6)
R Series (6)
Stadium (6)
Stage Series (6)
Zeus Series (6)
CS Series (5)
Elite Series (5)
EQ Series (5)
Formula Series (5)
G-Series (TSG) (5)
GS Series (5)
PRO-GM Series (5)
Terminator Series (5)
Thunder Series (5)
Apocalypse Series (4)
HED Series (4)
HEX Series (4)
Premium Series (4)
PRO-ZT Series (4)
Sport Series (4)
Stroker Pro Series (4)
D-Series (3)
DMD Series (3)
Machete Series (3)
Mille Legend Series (3)
NEO Series (3)
Performance Series (3)
Polk Audio MM1 Series (3)
PRO-HY Series (3)
SPL Show Series (3)
Street Reference Pro (3)
Thunder Dome Series (3)
CVL Series (2)
Diamond Elite Series (2)
Focus Series (2)
MA Series (2)
MS Series (2)
MSPRO Series (2)
Shock Wave Series (2)
Spike Series (2)
TNT Series (2)
Arena Series (1)
C1 Series (1)
Club Series (1)
EXL Series (1)
HXM Series (1)
MB Series (1)
MC Series (1)
MotorSport Series (1)
MX Series (1)
PK Series (1)
Prime Series (1)
PRO-FR Series (1)
PRO-NS Series (1)
Punch Pro Series (1)
Q Series (1)
Reserve Series (1)
SBL Series (1)
Stage 2 Series (1)
Stage 3 Series (1)
SX Series (1)
Z Series (1)
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MB Quart FKB 113 (FKB113) with Sound Damping

180W Peak (90W RMS) 5.25" Formula Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

FKB113_SDBSK2 big
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MB Quart FKB 113 (FKB113) with Sound Damping

180W Peak (90W RMS) 5.25" Formula Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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52
List price $88.73
-49% $44.98

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• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

MB Quart FKB 169 (FKB169) with Sound Damping

300W Peak (150W RMS) 6x9" Formula Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

FKB169_SDBSK2 big
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MB Quart FKB 169 (FKB169) with Sound Damping

300W Peak (150W RMS) 6x9" Formula 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
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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56
List price $108.73
-39% $65.98

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• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

DS18 PRO-GM8.4 (Sold Individually) with Sound Damping

580W Peak (190W RMS) 8" PRO-GM Series 4-Ohm Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROGM84_SDBSK2 big
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DS18 PRO-GM8.4 (Sold Individually) with Sound Damping

580W Peak (190W RMS) 8" PRO-GM Series 4-Ohm Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

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

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48
List price $53.69
-15% $45.44

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

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

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

PROX64M_SDBSK2 big
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DS18 PRO-X6.4M (Sold Individually) with Sound Damping

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

• 500 watts Peak Each, 250 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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52
List price $64.69
-13% $56.44

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• 500 watts Peak Each, 250 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

DS18 PRO-X6BM (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5” PRO-X Series 8-ohm Mid-range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX6BM_SDBSK2 big
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DS18 PRO-X6BM (Sold Individually) with Sound Damping

500W Peak (250W RMS) 6.5” PRO-X Series 8-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: 8 ohm
• Sensitivity: 94 dB

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49
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: 8 ohm
• Sensitivity: 94 dB

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

400W Peak (200W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX64BMSL_SDBSK2 big
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DS18 PRO-X6.4BMSL (Sold Individually) with Sound Damping

400W Peak (200W RMS) 6.5” PRO-X Series 4-ohm Mid-Range Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 400 watts Peak Each, 200 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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49
List price $71.69
-12% $63.44

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• 400 watts Peak Each, 200 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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DS18 PRO-X8.4M (Sold Individually) with Sound Damping

550W Peak (275W RMS) 8” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX84M_SDBSK2 big
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DS18 PRO-X8.4M (Sold Individually) with Sound Damping

550W Peak (275W RMS) 8” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 550 watts Peak Each, 275 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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48
List price $83.69
-21% $65.70

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• 550 watts Peak Each, 275 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Lowest price in 30 days

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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50
List price $83.69
-21% $65.70

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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-X8BM (Sold Individually) with Sound Damping

500W Peak (275W RMS) 8” PRO-X Series 8-ohm Mid-Range Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX8BM_SDBSK2 big
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DS18 PRO-X8BM (Sold Individually) with Sound Damping

500W Peak (275W RMS) 8” PRO-X Series 8-ohm Mid-Range Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 550 watts Peak Each, 275 watts RMS Each
• Red tweeter
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB

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48
List price $89.69
-9% $81.44

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• 550 watts Peak Each, 275 watts RMS Each
• Red tweeter
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB

Lowest price in 30 days

DS18 PRO-X8.4BM (Sold Individually) with Sound Damping

550W Peak (275W RMS) 8” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROX84BM_SDBSK2 big
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DS18 PRO-X8.4BM (Sold Individually) with Sound Damping

550W Peak (275W RMS) 8” PRO-X Series 4-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 550 watts Peak Each, 275 watts RMS Each
• Aluminum Bullet Tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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49
List price $89.69
-21% $70.80

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• 550 watts Peak Each, 275 watts RMS Each
• Aluminum Bullet Tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Lowest price in 30 days

DS18 PRO-ZXI8.4BM (Sold Individually) with Sound Damping

700W Peak (350W RMS) 8" ZXi Series 4-Ohm Midrange Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROZXI84BM_SDBSK2 big
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DS18 PRO-ZXI8.4BM (Sold Individually) with Sound Damping

700W Peak (350W RMS) 8" ZXi Series 4-Ohm Midrange Bullet Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 700 watts Peak Each, 350 watts RMS Each
• Aluminum Bullet Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 99 dB

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48
List price $131.73
-31% $90.35

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• 700 watts Peak Each, 350 watts RMS Each
• Aluminum Bullet Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 99 dB

MTX TERMINATOR69 with Sound Damping

120W RMS 6x9" Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TERMINATOR69_SDBSK2 big
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MTX TERMINATOR69 with Sound Damping

120W RMS 6x9" Terminator Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 60 watts RMS Each
• 1" Mylar Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.8 dB

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49
List price $108.69
-13% $94.94

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• 60 watts RMS Each
• 1" Mylar Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87.8 dB

NVX NSP4 with Sound Damping

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

NSP4_SDBSK2 big
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NVX NSP4 with Sound Damping

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

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List price $78.73
-30% $55.48

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List price $78.73
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• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

NVX NSP65KIT with Sound Damping

600W Peak (200W RMS) 6.5" N-Series 2-Way Component Speaker System with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

NSP65KIT_SDBSK2 big
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NVX NSP65KIT with Sound Damping

600W Peak (200W RMS) 6.5" N-Series 2-Way Component Speaker System with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $126.73
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• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 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"

2+ offers available
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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"

NVX XSP652 with Sound Damping

600W Peak (200W RMS) 6.5" X-Series 2-Way Coaxial Speakers with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

XSP652_SDBSK2 big
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NVX XSP652 with Sound Damping

600W Peak (200W RMS) 6.5" X-Series 2-Way Coaxial Speakers with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 300 watts Max Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Lightweight Carbon Fiber cone
• Impedance: 4 ohm
• Sensitivity: 92 dB
• Mounting Depth: 2.52"

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List price $198.73
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• 300 watts Max Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Lightweight Carbon Fiber cone
• Impedance: 4 ohm
• Sensitivity: 92 dB
• Mounting Depth: 2.52"

Pioneer TS-G6930F with Sound Damping

800W Peak (90W RMS) 6x9" G-Series 3-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TSG6930F_SDBSK2 big
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Pioneer TS-G6930F with Sound Damping

800W Peak (90W RMS) 6x9" G-Series 3-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 400 watts Peak Each, 45 watts RMS Each
• 0.43" Dome Tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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62
List price $98.74
-24% $74.98

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• 400 watts Peak Each, 45 watts RMS Each
• 0.43" Dome Tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P142_SDBSK2 big
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Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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List price $128.73
$124.98

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• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

Rockford Fosgate Power T2652-S with Sound Damping

400W Peak (200W RMS) 6.5" Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

T2652S_SDBSK2 big
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Rockford Fosgate Power T2652-S with Sound Damping

400W Peak (200W RMS) 6.5" Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome tweeters with integral suspension
• Carbon Fiber Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome tweeters with integral suspension
• Carbon Fiber Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

DS18 PRO-EXL68 with Speaker Installation Kit

Includes: 2 Mid-Range Loudspeakers, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Sound Damping Roller, and Panel Removal Kit

PRO-HY6.4B, FRING65, SDRLR1, SDSK2, BTK106 big
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DS18 PRO-EXL68 with Speaker Installation Kit

Includes: 2 Mid-Range Loudspeakers, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Sound Damping Roller, and Panel Removal Kit

• 225W 6.5” RMS PRO-HY Series Hybrid Mid-Range Speaker with Compression Horn Tweeter
• 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

additional information required
Fits select locations in your 325Ci.
Add vehicle details to confirm exact location.
188
List price $300.61
-11% $268.44

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• 225W 6.5” RMS PRO-HY Series Hybrid Mid-Range Speaker with Compression Horn Tweeter
• 2 Piece Foam Speaker Ring Kit
• 1.38 Square Feet of Sound Damping
• Installer Panel Removal Tool Kit
• Rubber Roller

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