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All Car Speakers for your 1998 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.
CS Series (10)
Punch Series (10)
Reference Series (10)
C2 Series (7)
Club Series (7)
A Series (6)
C1 Series (6)
DMD Series (6)
HED Series (6)
V Series (6)
KS Series (5)
N-Series (5)
Prime Series (5)
Dieci Series (4)
Excelon Motorsports Series (4)
Machete Series (4)
Prime Series (4)
SQ Series (4)
Terminator Series (4)
VEGA Series (4)
Zeus Series (4)
ZXI Series (4)
Cento Series (3)
CF Series (3)
Colossus Classic Series (3)
Discus Series (3)
DS Series (3)
EXL Series (3)
G-Series (TSG) (3)
Kappa Series (3)
KFC Series (3)
PNW Series (3)
Polk DB+ Series (3)
Primus Series (3)
PRO-X Series (3)
Punch P1 Series (3)
S Series (3)
Stage 3 Gen 2 Series (3)
Stage Series (3)
X Series (3)
XED Series (3)
BASSREV Series (2)
C3 Series (2)
C7 Series (2)
Diamond Elite Series (2)
DR Series (2)
Focus Series (2)
Formula Series (2)
Gen-X (2)
MR Series (2)
Power Series (2)
Power T1 Series (2)
Power T2 Series (2)
PRO Series (2)
RS Series (2)
Sport Series (2)
Stage 3 Series (2)
Street Series (2)
Thunder Series (2)
VTEK Series (2)
Altitude Series (1)
Apex Series (1)
Black Hydra Series (1)
DXQ Series (1)
E-Series (1)
eXcelon Series (1)
GT7 Series (1)
GX Series (1)
MotorSport Series (1)
MX Series (1)
PANCADÃO Series (1)
PNX Series (1)
Polk Audio MM1 Series (1)
Premium Series (1)
PRO-FR Series (1)
Punch P3 Series (1)
Rage Series (1)
Reserve Series (1)
Signature Series (1)
SPL Show Series (1)
Stadium (1)
Stadium Series (1)
Stage 2 Gen 2 Series (1)
Stroker Series (1)
Studio Series (1)
Symphony Series (1)
Tsunami Series (1)
Uno Series (1)
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Rockford Fosgate Prime R14X2 (Open Box, Great)

120W Peak (60W RMS) 4” Prime Series 2-way 4-ohm Coaxial Car Speaker

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Rockford Fosgate Prime R14X2 (Open Box, Great)

120W Peak (60W RMS) 4” Prime Series 2-way 4-ohm Coaxial Car Speaker

• 60 watts Peak Each, 30 watts RMS Each
• 1/2" Silk Dome tweeters
• Vacuum polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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14
List price $64.99
-15% $55.24 /pair

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JL Audio C2-400x (Open Box, Great)

100W Peak (70W RMS) 4” Evolution C2 Series 2-way 4-ohm Coaxial Car Speakers

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JL Audio C2-400x (Open Box, Great)

100W Peak (70W RMS) 4” Evolution C2 Series 2-way 4-ohm Coaxial Car Speakers

• 50 watts Peak Each, 35 watts RMS Each
• 0.75" Silk Dome Tweeters
• 2 speaker grilles included
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

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9
List price $189.99
-15% $161.49 /pair

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Rockford Fosgate Punch P1T-S (Open Box, Great)

240W Peak (120W RMS) 1" Punch Series PEI Car Tweeter Kit with External Crossovers

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Rockford Fosgate Punch P1T-S (Open Box, Great)

240W Peak (120W RMS) 1" Punch Series PEI Car Tweeter Kit with External Crossovers

• 1" Punch Series Dome Tweeters
• 120 watts Peak Each
• 60 watts RMS Each
• 4 ohm Impedance

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17
List price $89.99
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JL Audio C2-350x (Open Box, Great)

80W Peak (50W RMS) 3.5” C2 Series 2-way 4-ohm Coaxial Car Speakers

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JL Audio C2-350x (Open Box, Great)

80W Peak (50W RMS) 3.5” C2 Series 2-way 4-ohm Coaxial Car Speakers

• 40 watts Peak Each, 25 watts RMS Each
• 3/4" Silk Dome tweeters
• Injection-molded Polypropylene with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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15
List price $159.99
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Rockford Fosgate Power T1T-S (Open Box, Great)

300W Peak (150W RMS) 1" Power T1 Series Treated Fabric Dome Component Tweeter Kit with Crossovers

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Rockford Fosgate Power T1T-S (Open Box, Great)

300W Peak (150W RMS) 1" Power T1 Series Treated Fabric Dome Component Tweeter Kit with Crossovers

• 1" Power T1 Series Dome Tweeters
• Audiophile grade external crossover
• 150 watts Peak Each
• 75 watts RMS Each
• 4 ohm Impedance

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12
List price $229.99
-15% $195.49 /pair

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Rockford Fosgate Power T2T-S (Open Box, Great)

300W Peak (150W RMS) 1" Power T2 Series Aluminum Tweeter Kit with External Crossovers

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Rockford Fosgate Power T2T-S (Open Box, Great)

300W Peak (150W RMS) 1" Power T2 Series Aluminum Tweeter Kit with External Crossovers

• 1" Power T2 Series Dome Tweeters with On-Axis/Off-Axis Configuration
• 150 watts Peak Each
• 75 watts RMS Each
• 4 ohm Impedance

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6
List price $289.99
-15% $246.49 /pair

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JL Audio C1-525x (Open Box, Great)

150W Peak (100W RMS) 5.25" C1 Series 2-way 4-ohm Coaxial Car Speakers

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JL Audio C1-525x (Open Box, Great)

150W Peak (100W RMS) 5.25" C1 Series 2-way 4-ohm Coaxial Car Speakers

• 75 watts Peak Each, 50 watts RMS Each
• 3/4" Silk-suspended aluminum Edge-driven Dome tweeters
• Injection-molded, Mineral-filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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List price $129.99
-15% $110.49 /pair

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Rockford Fosgate PRIME R152-S (Open Box, Great)

160W Peak (80W RMS) 5.25" Prime Series 2-way 4-ohm Component Speaker System

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Rockford Fosgate PRIME R152-S (Open Box, Great)

160W Peak (80W RMS) 5.25" Prime Series 2-way 4-ohm Component Speaker System

• 80 watts Peak Each, 40 watts RMS Each
• 1" Mylar Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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List price $79.99
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JL Audio C3-525 (Open Box, Great)

300W Peak (150W RMS) 5.25” Evolution C3 Series 2-way 4-ohm Component Speaker System

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JL Audio C3-525 (Open Box, Great)

300W Peak (150W RMS) 5.25” Evolution C3 Series 2-way 4-ohm Component Speaker System

• 150 watts Peak Each, 75 watts RMS Each
• 2-way convertible speakers from component to coaxial
• 1" Silk Soft Dome tweeters with ferrofluid cooling and damping
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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List price $529.99
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Rockford Fosgate Power T152 (Open Box, Great)

240W Peak (120W RMS) 5.25" Power Series 2-way 4-ohm Coaxial Car Speakers

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Rockford Fosgate Power T152 (Open Box, Great)

240W Peak (120W RMS) 5.25" Power Series 2-way 4-ohm Coaxial Car Speakers

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome offset cantilever coaxial mounted tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

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22
List price $219.99
-15% $186.99 /pair

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Rockford Fosgate PRIME R1T-S

160W Peak (80W RMS) 1" PRIME Series Mylar Balanced Dome Car Tweeters

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Rockford Fosgate PRIME R1T-S

160W Peak (80W RMS) 1" PRIME Series Mylar Balanced Dome Car Tweeters

• 1" Prime Series Balanced Dome Tweeters
• 80 watts Peak Each
• 40 watts RMS Each
• 4 ohm Impedance

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$44.99 /pair

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NVX NSP35

200W Peak (70W RMS) 3.5" N-Series 2 Way Coaxial Car Speakers

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NVX NSP35

200W Peak (70W RMS) 3.5" N-Series 2 Way Coaxial Car Speakers

• 100 watts Peak Each, 35 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB
• Mounting Depth: 1.49"

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List price $59.99
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Pioneer TS-T110

240W Peak (80W RMS) 7/8-Inch Hard-Dome Tweeters (Pair)

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Pioneer TS-T110

240W Peak (80W RMS) 7/8-Inch Hard-Dome Tweeters (Pair)

• 120W Max
• 40W RMS
• 7/8" Polypropylene/Titanium Hard Dome
• Surface and flush mount compatible
• Strontium and Magnetic Fluid structure

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List price $55.00
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NVX NSP4

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers

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NVX NSP4

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers

• 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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NVX VSP4

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

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NVX VSP4

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

• 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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List price $65.99
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NVX NSP525

240W Peak (160W RMS) 5.25" N-Series 2 Way Coaxial Car Speakers

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NVX NSP525

240W Peak (160W RMS) 5.25" N-Series 2 Way Coaxial Car Speakers

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

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Kicker CST204 (46CST204)

200W Peak (100W RMS) 3/4” CS Series 4-ohm Titanium Dome Tweeters

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Kicker CST204 (46CST204)

200W Peak (100W RMS) 3/4” CS Series 4-ohm Titanium Dome Tweeters

• 3/4" CS Series Dome Tweeters
• 100 watts Peak Each
• 50 watts RMS Each
• 4 ohm Impedance

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NVX XQS3

200W Peak (100W RMS) 3.5" X-Series Midrange Speakers with Carbon Fiber Cones

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NVX XQS3

200W Peak (100W RMS) 3.5" X-Series Midrange Speakers with Carbon Fiber Cones

• 100 watts Peak Each, 50 watts RMS Each
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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JL Audio C1-100ct

120W RMS 1" C1 Series 8-ohm Component Dome Tweeters

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JL Audio C1-100ct

120W RMS 1" C1 Series 8-ohm Component Dome Tweeters

• 1" C1 Series Silk-suspended Aluminum Dome Tweeters
• 60 watts RMS Each
• 4 ohm Impedance

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Rockford Fosgate Punch P1 P1T-S

240W Peak (120W RMS) 1" Punch Series PEI Car Tweeter Kit with External Crossovers

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Rockford Fosgate Punch P1 P1T-S

240W Peak (120W RMS) 1" Punch Series PEI Car Tweeter Kit with External Crossovers

• 1" Punch Series Dome Tweeters
• 120 watts Peak Each
• 60 watts RMS Each
• 4 ohm Impedance

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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
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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