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Speakers with Sound Deadening for your 2007 525i 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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Rockford Fosgate PPS4-8 with Speaker Accessories

200W Peak (100W RMS) 8” Punch Pro Series Midrange Speaker

PPS4-8, XBAF8, SDSK2, SDRLR1, BTK106 big Out of stock
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Rockford Fosgate PPS4-8 with Speaker Accessories

200W Peak (100W RMS) 8” Punch Pro Series Midrange Speaker

• 8" Punch Series Speaker
• Mid-Range Driver
• 250W Max • 125W RMS
• 4 ohm Impedance
• High Strength Paper Cone
• Treated Cloth Surround
• Oversize Magnet Structure

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Install kits available for most vehicles

found car based on your search
Fits your 525i
161
List price $182.70
-20% $145.75
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• 8" Punch Series Speaker
• Mid-Range Driver
• 250W Max • 125W RMS
• 4 ohm Impedance
• High Strength Paper Cone
• Treated Cloth Surround
• Oversize Magnet Structure

Infinity Reference REF-4032CFX with Installation Accessories

70W RMS Reference Series 4" 2-Way Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

REF4032CFXAM, FRING4, SDSK2, SDRLR1, BTK106 big Out of stock
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Infinity Reference REF-4032CFX with Installation Accessories

70W RMS Reference Series 4" 2-Way Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 105 watts Peak Each, 35 watts RMS Each
• Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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Install kits available for most vehicles

additional information required
Fits select locations in your 525i.
Add vehicle details to confirm exact location.
117
List price $212.66
-45% $117.75 /pair
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• 105 watts Peak Each, 35 watts RMS Each
• Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

DS18 PRO-GM8 with Speaker Installation Kit

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

(2)PRO-GM8, XBAF8, SDSK2, SDRLR1, BTK106 big Out of stock
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DS18 PRO-GM8 with Speaker Installation Kit

190W RMS 8" 8-Ohm Midrange Speakers + 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: 93 dB

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Install kits available for most vehicles

found car based on your search
Fits your 525i
142
List price $166.69
-31% $115.71
Add to Cart

• 580 watts Peak Each, 190 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 93 dB

Rockford Fosgate Punch Pro PPS4-8 (Sold Individually) with Sound Damping

250 Peak (125W RMS) 8” Punch Pro Series 4-ohm Midrange Car Speaker + NVX SDBSK2 Premium Sound Damping

PPS48_SDBSK2 big Out of stock
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Rockford Fosgate Punch Pro PPS4-8 (Sold Individually) with Sound Damping

250 Peak (125W RMS) 8” Punch Pro Series 4-ohm Midrange Car Speaker + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 100 watts RMS Each
• Fiber-Reinforced High Strength Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your 525i
67
List price $118.73
$114.98
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• 200 watts Peak Each, 100 watts RMS Each
• Fiber-Reinforced High Strength Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

Hertz SV 200.1 with Installation Accessories

1000W Peak (500W RMS) 8" SPL Show Series 4-ohm midrange car speakers + 8" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

SV2001_ACC_KIT big Out of stock
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Hertz SV 200.1 with Installation Accessories

1000W Peak (500W RMS) 8" SPL Show Series 4-ohm midrange car speakers + 8" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 500 watts Peak Each, 250 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your 525i
221
List price $487.71
-19% $396.33
Add to Cart

• 500 watts Peak Each, 250 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

DS18 PRO-1KP8.8 with Installation Accessories

2000W Peak (1000W RMS) Pro Series 8” Mid-bass Loudspeaker

(2)PRO-1KP8.8, XBAF8, SDSK2, SDRLR1, BTK106 big Out of stock
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DS18 PRO-1KP8.8 with Installation Accessories

2000W Peak (1000W RMS) Pro Series 8” Mid-bass Loudspeaker

• 2000 watts Peak, 1000 watts RMS
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 95 dB
• Priced Per Each Speaker

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Install kits available for most vehicles

found car based on your search
Fits your 525i
142
List price $490.61
-8% $453.71
Add to Cart

• 2000 watts Peak, 1000 watts RMS
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 95 dB
• Priced Per Each Speaker

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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
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