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All Car Speakers for your 2011 A4 Quattro 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 (7)
V Series (7)
Machete Series (6)
Punch Series (5)
CS Series (4)
Excelon Motorsports Series (4)
MSNEO Series (4)
SPL Show Series (4)
VEGA Series (4)
VEX Series (4)
X Series (4)
XL Series (4)
ZXI Series (4)
A Series (3)
Apocalypse Series (3)
C2 Series (3)
CF Series (3)
DMD Series (3)
DMDX Series (3)
EQ Series (3)
HED Series (3)
NEO Series (3)
PANCADÃO Series (3)
PRO Series (3)
PRO-GM Series (3)
Punch P3 Series (3)
C1 Series (2)
C7 Series (2)
Club Series (2)
Godfather Series (2)
Hannibal Series (2)
KFC Series (2)
KS Series (2)
LCMR Series (2)
M Series (2)
MC Series (2)
Power T1 Series (2)
Power T2 Series (2)
Prime Series (2)
PRO-NS Series (2)
Punch P1 Series (2)
SQ Series (2)
Street Series (2)
Altitude Series (1)
Apex Series (1)
BASSREV Series (1)
Colossus Classic Series (1)
CVPRO Series (1)
CVPX Series (1)
Diamond Elite Series (1)
Dieci Series (1)
Discus Series (1)
DS Series (1)
DXQ Series (1)
ECX Series (1)
EPIC PRO Series (1)
EQ NEO Series (1)
Godfather Pro Series (1)
Hawk Series (1)
HED Pro Series (1)
MA Series (1)
MM Series (1)
MotorSport Series (1)
MSPRO Series (1)
N-Series (1)
NEO SPL Series (1)
Octagonal Series (1)
PNW Series (1)
PNX Series (1)
Pro Audio on Wheels Series (1)
Pro Audio Series (1)
PRO-FR Series (1)
PRO-HY Series (1)
Punch Pro Series (1)
Reference Series (1)
Road Thunder Extreme Series (1)
S Series (1)
SA Series (1)
Stadium (1)
Stage 3 Gen 2 Series (1)
Stallion Series (1)
Street Reference Pro (1)
Stroker Pro Series (1)
Stroker Series (1)
Symphony Series (1)
Zeus Series (1)
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Pioneer TS-A301TW

900W Peak (200W RMS) 3/4" A Series PEI Hard Dome Component Tweeters

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Pioneer TS-A301TW

900W Peak (200W RMS) 3/4" A Series PEI Hard Dome Component Tweeters

• 3/4" A Series Hard Dome Tweeters
• 450 watts Peak Each
• 100 watts RMS Each
• 4 ohm Impedance

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List price $65.00
-15% $55.00 /pair

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DS18 ZXI-T1

100W Peak (50W RMS) 1.7" PEI Dome Tweeter With 1" Aluminum Voice Coil

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DS18 ZXI-T1

100W Peak (50W RMS) 1.7" PEI Dome Tweeter With 1" Aluminum Voice Coil

• 1.7" ZXI Series Dome Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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$45.95 /pair

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JBL Stadium 22S (JBLSPKSDD22SAM)

300W Peak (100W RMS) 2" Stadium Series Midrange Drivers with Crossover Enclosures

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JBL Stadium 22S (JBLSPKSDD22SAM)

300W Peak (100W RMS) 2" Stadium Series Midrange Drivers with Crossover Enclosures

• 150 watts Peak Each, 50 watts RMS Each
• Fiberglass dome material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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• 150 watts Peak Each, 50 watts RMS Each
• Fiberglass dome material
• Impedance: 3 ohm
• Sensitivity: 94 dB

DS18 35D200NO-4

400W Peak (200W RMS) 3.5" Midrange 4-ohm OEM Dashboard Loudspeakers

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DS18 35D200NO-4

400W Peak (200W RMS) 3.5" Midrange 4-ohm OEM Dashboard Loudspeakers

• 200 watts Peak Each, 100 watts RMS Each
• Fiberglass-Foam Composite cone with resin finish
• Impedance: 4 ohm
• Sensitivity: 88 dB

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• 200 watts Peak Each, 100 watts RMS Each
• Fiberglass-Foam Composite cone with resin finish
• Impedance: 4 ohm
• Sensitivity: 88 dB

DS18 ZXI-3542

240W Peak (80W RMS) 3.5" 2 Way Coaxial 4-ohm Speakers

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DS18 ZXI-3542

240W Peak (80W RMS) 3.5" 2 Way Coaxial 4-ohm Speakers

• 120 watts Peak Each, 40 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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• 120 watts Peak Each, 40 watts RMS Each
• 1" PEI (Polyetherimide) Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Infinity REF307F (INFSPKRF307FUS)

150W Peak (50W RMS) 3.5" Reference Series 2-Way Coaxial 3-ohm Speakers

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Infinity REF307F (INFSPKRF307FUS)

150W Peak (50W RMS) 3.5" Reference Series 2-Way Coaxial 3-ohm Speakers

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

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• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Limited time!

Pioneer TS-A879

900W Peak (200W RMS) 3.5" A-Series 2 Way Coaxial 4-ohm Speakers

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Pioneer TS-A879

900W Peak (200W RMS) 3.5" A-Series 2 Way Coaxial 4-ohm Speakers

• 450 watts Peak Each, 100 watts RMS Each
• 0.98" PEI (Polyetherimide) Hard Dome Tweeters
• Carbon-Mica Reinforced IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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List price $90.00
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• 450 watts Peak Each, 100 watts RMS Each
• 0.98" PEI (Polyetherimide) Hard Dome Tweeters
• Carbon-Mica Reinforced IMPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Limited time!

Diamond Audio DMDX6525C

270W Peak (90W RMS) 6.5" DMD Series 3-Way Component 4-ohm Speakers

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Diamond Audio DMDX6525C

270W Peak (90W RMS) 6.5" DMD Series 3-Way Component 4-ohm Speakers

• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Dome Tweeters
• 2.5" Speakers included
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Dome Tweeters
• 2.5" Speakers included
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Rockford Fosgate Punch Pro PPS4-8 (Sold Individually)

250 Peak (125W RMS) 8” Punch Pro Series Pro-Audio 4-ohm Speaker

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Rockford Fosgate Punch Pro PPS4-8 (Sold Individually)

250 Peak (125W RMS) 8” Punch Pro Series Pro-Audio 4-ohm Speaker

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

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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

JBL STAGE3 GEN2 38F (STAGE338F)

800W Peak (100W RMS) 3.5" Stage3 Gen2 Series 2-Way Coaxial 4-ohm Car Speakers

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JBL STAGE3 GEN2 38F (STAGE338F)

800W Peak (100W RMS) 3.5" Stage3 Gen2 Series 2-Way Coaxial 4-ohm Car Speakers

• 400 watts Peak Each, 50 watts RMS Each
• PEI (Polyetherimide) Balanced Dome Tweeters
• Plus One Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $79.95
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• 400 watts Peak Each, 50 watts RMS Each
• PEI (Polyetherimide) Balanced Dome Tweeters
• Plus One Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Limited time!

NVX VPRO8 (Sold Individually)

550W Peak (275W RMS) 8" V-Series Pro 2 Way Coaxial Loudspeaker

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NVX VPRO8 (Sold Individually)

550W Peak (275W RMS) 8" V-Series Pro 2 Way Coaxial Loudspeaker

• 550 watts Peak Each, 275 watts RMS Each
• 1" Aluminum Bullet tweeter
• Competition Grade Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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• 550 watts Peak Each, 275 watts RMS Each
• 1" Aluminum Bullet tweeter
• Competition Grade Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Deaf Bonce Apocalypse AP-M81SE PRO (M81SE PRO)

720W Peak (360W RMS) 8" Apocalypse Series Pro Audio Midrange 4-ohm Car Speakers

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Deaf Bonce Apocalypse AP-M81SE PRO (M81SE PRO)

720W Peak (360W RMS) 8" Apocalypse Series Pro Audio Midrange 4-ohm Car Speakers

• 360 watts Peak Each, 180 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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List price $161.99
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• 360 watts Peak Each, 180 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

Deaf Bonce Machete MW-80

700W Peak (350W RMS) 8" Machete Series Midbass 4-ohm Speakers

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Deaf Bonce Machete MW-80

700W Peak (350W RMS) 8" Machete Series Midbass 4-ohm Speakers

• 350 watts Peak Each, 175 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93.5 dB

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• 350 watts Peak Each, 175 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93.5 dB

JL Audio C7-350CM

150W RMS 3.5" C7 Series 4-ohm Midrange 4-ohm Speaker

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JL Audio C7-350CM

150W RMS 3.5" C7 Series 4-ohm Midrange 4-ohm Speaker

• RMS Each
• Vacuum formed Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89.5 dB

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• RMS Each
• Vacuum formed Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89.5 dB

DS18 PRO-1KP8.8 (Sold Individually)

2000W Peak (1000W RMS) 8" PANCADÃO Series 8-ohm Mid-bass Loudspeaker

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DS18 PRO-1KP8.8 (Sold Individually)

2000W Peak (1000W RMS) 8" PANCADÃO Series 8-ohm 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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• 2000 watts Peak, 1000 watts RMS
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 95 dB
• Priced Per Each Speaker

Sundown Audio NeoPro-8 v.4 (Sold Individually)

320W RMS 8" NEO Series Pro Audio Midrange 8-ohm Speaker (S-NEOPROV488)

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Sundown Audio NeoPro-8 v.4 (Sold Individually)

320W RMS 8" NEO Series Pro Audio Midrange 8-ohm Speaker (S-NEOPROV488)

• 320 watts RMS each
• cone material
• Impedance: 8 ohm
• Sensitivity: 95.5 dB

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• 320 watts RMS each
• cone material
• Impedance: 8 ohm
• Sensitivity: 95.5 dB

Sundown Audio NeoPro-8 v.4 (Sold Individually)

320W RMS 8" NEO Series Pro Audio Midrange 4-ohm Speaker (S-NEOPROV484)

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Sundown Audio NeoPro-8 v.4 (Sold Individually)

320W RMS 8" NEO Series Pro Audio Midrange 4-ohm Speaker (S-NEOPROV484)

• 320 watts RMS each
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 95.5 dB

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• 320 watts RMS each
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 95.5 dB

Sundown Audio VEX-8 (VEX-84)

300W RMS 8" VEX Series Pro Audio Midrange 4-ohm Speaker (S-VEX84)

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Sundown Audio VEX-8 (VEX-84)

300W RMS 8" VEX Series Pro Audio Midrange 4-ohm Speaker (S-VEX84)

• 300 watts RMS Each
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 94.3 dB

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• 300 watts RMS Each
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 94.3 dB

Rockford Fosgate PPS4-8 (Sold Individually) - New (Damaged Packaging)

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

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Rockford Fosgate PPS4-8 (Sold Individually) - New (Damaged Packaging)

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

JL Audio C7-350CM (Open Box, Great)

150W RMS 3.5" C7 Series 4-ohm Midrange 4-ohm Speaker

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JL Audio C7-350CM (Open Box, Great)

150W RMS 3.5" C7 Series 4-ohm Midrange 4-ohm Speaker

• RMS Each
• Vacuum formed Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89.5 dB

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List price $649.99
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• RMS Each
• Vacuum formed Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89.5 dB

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    FAQ Frequently asked questions in All Car Speakers

    Car Speakers Frequently Asked Questions (FAQ)
    Coaxial car speakers, also known as full-range speakers, combine multiple speaker elements in one unit. These elements typically include a woofer for low frequencies and a tweeter for high frequencies. Some coaxial speakers may also have a mid-range driver for enhanced sound quality. The key advantage of coaxial speakers is their simplicity and ease of installation, as all components are housed in a single unit, making them a popular choice for stock speaker replacements. In contrast, component speakers consist of separate speaker elements—woofers, tweeters, and sometimes mid-range drivers—allowing for greater customization and sound quality. Component systems offer better sound separation and imaging, making them a preferred choice for audiophiles and those seeking high-quality audio in their vehicles.
    Speaker sensitivity, measured in decibels (dB), indicates how efficiently a speaker converts power into sound. Higher sensitivity speakers produce more sound with less power, making them suitable for low-powered factory stereos or aftermarket head units. Lower sensitivity speakers may require more power to achieve the same volume level. When choosing car speakers, it's essential to consider sensitivity to match your stereo's power output. If you have a low-powered system, opt for high-sensitivity speakers to maximize sound output without distortion. Conversely, higher-powered aftermarket amplifiers can work well with lower sensitivity speakers. Balancing speaker sensitivity with your system's power output is crucial to achieving optimal audio quality and avoiding distortion.
    Speaker impedance, measured in ohms (Ω), represents the electrical resistance a speaker presents to an amplifier. Car speakers typically come in 4-ohm and 8-ohm versions, with 4-ohm being the most common. The speaker's impedance affects the amount of power it draws from the amplifier. In car audio systems, it's essential to match the speaker's impedance with the amplifier's minimum recommended load. Amplifiers are designed to work most efficiently within specific impedance ranges, and a mismatch can result in reduced power output and potential damage to the amplifier or speakers. Most car audio amplifiers are optimized for 4-ohm speakers, so choosing 4-ohm speakers is generally a safe choice. However, if you're connecting multiple speakers, it's crucial to calculate the total impedance to avoid overloading the amplifier.
    Upgrading factory car speakers with aftermarket speakers offers several advantages: Improved Sound Quality: Aftermarket speakers often feature better materials, construction, and design, resulting in clearer, more detailed sound. Enhanced Bass: Upgraded speakers typically provide deeper and more pronounced bass response. Greater Power Handling: Aftermarket speakers can handle more power, reducing the risk of distortion at higher volumes. Customization: Aftermarket speakers offer a wide range of sizes, styles, and features, allowing you to tailor your sound system to your preferences. Durability: Many aftermarket speakers are built to withstand the harsh conditions of automotive use, increasing their longevity. Overall, upgrading car speakers can transform your in-car audio experience, delivering higher fidelity and more enjoyable sound.
    2-way and 3-way car speakers differ in the number of driver elements they incorporate. A 2-way speaker consists of a woofer for low frequencies and a tweeter for high frequencies, while a 3-way speaker adds a mid-range driver for improved sound separation. The choice between 2-way and 3-way speakers depends on your audio priorities and budget. 2-way speakers are cost-effective and suitable for most users, providing good sound quality and clarity. They are ideal for replacing factory speakers or upgrading basic audio systems. 3-way speakers offer enhanced sound separation and improved mid-range performance. If you seek more detailed and balanced audio with better instrument and vocal reproduction, 3-way speakers are a worthy upgrade. However, they tend to be pricier than 2-way speakers. Ultimately, your choice should align with your audio preferences and budget, as both 2-way and 3-way speakers can significantly enhance your car's audio system compared to factory-installed speakers.
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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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