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1998 Audi A4 Quattro

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Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Speakers & Speaker Installation for 1998 Audi A4 Quattro

Find speakers to upgrade your sound and fit in the factory speaker location for your A4 Quattro.  After you choose your speakers, we'll help you find speaker adapters, speaker harnesses and other accessories for installation.

All car speakers

Shop All Speaker Locations in the Vehicle

See all speakers that fit, regardless of location.

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Lower Front Door

Lower Front Door Speakers

Speakers for your lower front door.

Rear Deck Corner

Rear Deck Corner Speakers

Speakers for your corner rear deck

Rear Door Panel Speakers

Rear Door Panel Speakers

Speakers for your rear door panels

Upper Front Door Speakers

Upper Front Door Speakers

Speakers for your upper front door.

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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.
Reference Series (30)
Punch Series (17)
V Series (15)
Club Series (13)
N-Series (13)
Polk DB+ Series (13)
Zeus Series (13)
A Series (12)
DMD Series (12)
HED Series (12)
Primus Series (12)
PRO-X Series (12)
S Series (12)
XED Series (12)
ZXI Series (12)
PNW Series (11)
Dieci Series (10)
Kappa Series (10)
Stage Series (10)
G-Series (TSG) (9)
Cento Series (8)
CS Series (8)
Prime Series (8)
C2 Series (7)
Terminator Series (6)
KFC Series (5)
KS Series (5)
Sport Series (5)
Thunder Series (5)
C1 Series (4)
Diamond Elite Series (4)
DRVN Series (4)
EXL Series (4)
Formula Series (4)
Gen-X (4)
Machete Series (4)
Power Series (4)
Premium Series (4)
PS Series (4)
Signature Series (4)
Colossus Classic Series (3)
Discus Series (3)
DS Series (3)
GT7 Series (3)
GX Series (3)
MX Series (3)
Prime Series (3)
Punch P1 Series (3)
SQ Series (3)
Stadium Series (3)
Stage 3 Gen 2 Series (3)
Stage 3 Series (3)
Uno Series (3)
VEGA Series (3)
X Series (3)
BASSREV Series (2)
C3 Series (2)
C7 Series (2)
CF Series (2)
DR Series (2)
Elite Series (2)
Focus Series (2)
MAS Series (2)
MR Series (2)
PRO Series (2)
PRO-FR Series (2)
Reserve Series (2)
RS Series (2)
Thunder Dome Series (2)
VTEK Series (2)
Altitude Series (1)
Apex Series (1)
Black Hydra Series (1)
CX Series (1)
DXQ Series (1)
E-Series (1)
eXcelon Series (1)
MotorSport Series (1)
Polk Audio MM1 Series (1)
Punch P3 Series (1)
Rage Series (1)
SPL Show Series (1)
Stadium (1)
Stage 2 Gen 2 Series (1)
Studio Series (1)
Symphony Series (1)
Tsunami Series (1)
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MB Quart RS1-213

220W Peak (110W RMS) 5.25" Reference Series 2-Way 4-ohm Component Speaker System

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MB Quart RS1-213

220W Peak (110W RMS) 5.25" Reference Series 2-Way 4-ohm Component Speaker System

• 110 watts Peak Each, 55 watts RMS Each
• 3/4" Titanium Dome tweeters
• Tunable waveguide tweeter housing
• Bamboo Fiber cone material
• Tweeters constructed with WideSphere™ Technology
• Impedance: 4 ohm
• Sensitivity: 86 dB

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List price $149.95
-13% $129.95 /set

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Ships in 10-14 days

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Deaf Bonce Machete MFX-50

200W Peak (100W RMS) 5.25" Machete Series 2 Way Coaxial 4-ohm Speakers

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Deaf Bonce Machete MFX-50

200W Peak (100W RMS) 5.25" Machete Series 2 Way Coaxial 4-ohm Speakers

• 100 watts Peak Each, 50 watts RMS Each
• Dome Tweeters
• Semi-Pressed paper with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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$39.90 /pair

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American Bass SQ-5.25-FR

240W Peak (120W RMS) 5.25" SQ Series 2 Way Full Range Coaxial 4-ohm Speakers

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American Bass SQ-5.25-FR

240W Peak (120W RMS) 5.25" SQ Series 2 Way Full Range Coaxial 4-ohm Speakers

• 120 watts Peak Each, 60 watts RMS Each
• Swivel 3/4" Neodymium Dome Tweeters
• Glass Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $83.00
-40% $49.40 /pair

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Earthquake Sound VTEK-52Xi

800W RMS 5.25" VTEK Series 2-Way Coaxial 2-ohm Car Speakers

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Earthquake Sound VTEK-52Xi

800W RMS 5.25" VTEK Series 2-Way Coaxial 2-ohm Car Speakers

• 400 watts RMS Each
• 3/4" Silk Dome swiveling tweeters
• Glass Carbon Fiber cone material
• Impedance: 2 ohm
• Sensitivity: 89 dB

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$159.00 /pair

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MTX SS5

250W RMS 5.25" Signature Series 2 Way Component 4-ohm System

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MTX SS5

250W RMS 5.25" Signature Series 2 Way Component 4-ohm System

• 125 watts RMS Each
• 1-3/16" Teteron Dome tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 84.9 dB

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$499.95 /set

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American Bass SYMPHONY 5.25 FR

300W Peak (150W RMS) 5.25" Symphony Series 2 Way Coaxial 4-ohm Speakers

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American Bass SYMPHONY 5.25 FR

300W Peak (150W RMS) 5.25" Symphony Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• Neodymium Cone tweeters
• cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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List price $70.45
-34% $46.28 /pair

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Deaf Bonce Black Hydra Delta 513X

240W Peak (140W RMS) 5.25" Black Hydra Series 2 Way Coaxial 4-ohm Speakers

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Deaf Bonce Black Hydra Delta 513X

240W Peak (140W RMS) 5.25" Black Hydra Series 2 Way Coaxial 4-ohm Speakers

• 120 watts Peak Each, 60 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87.4 dB

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$49.90 /pair

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Ships in 10-14 days

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NVX XQS3 v2 (XQS3v2) (Open Box, Great)

200W Peak (100W RMS) 3.5" X-Series v2 NEO Midrange Speakers with Carbon Fiber Cones

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NVX XQS3 v2 (XQS3v2) (Open Box, Great)

200W Peak (100W RMS) 3.5" X-Series v2 NEO Midrange Speakers with Carbon Fiber Cones

• 100 watts Peak Each, 50 watts RMS Each
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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1
List price $155.99
-42% $90.99 /pair

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• 100 watts Peak Each, 50 watts RMS Each
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Cerwin Vega XED52 with Sound Damping

550W Peak (60W RMS) 5.25" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

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Cerwin Vega XED52 with Sound Damping

550W Peak (60W RMS) 5.25" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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54
List price $72.73
-18% $59.98

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• 275 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Infinity REF507CF with Installation Accessories

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

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Infinity REF507CF with Installation Accessories

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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List price $322.66
-19% $260.51

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• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Hertz CK 130 + FREE $100 Gift Card

5.25" Cento Series 2-Way Component Speaker system

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Hertz CK 130 + FREE $100 Gift Card

5.25" Cento Series 2-Way Component Speaker system

• 105 Watts Max Each, 35 Watts RMS Each
•Semi Pressed Paper-Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92.5 dB
• Mounting Depth: 2"

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Install kits available for most vehicles

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5
List price $580.00
-31% $399.99 /set

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Ships in 10-14 days

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• 105 Watts Max Each, 35 Watts RMS Each
•Semi Pressed Paper-Mica cone material
• Tetolon Tweeter dome
• 4 Ohm Impedance
• Sensitivity: 92.5 dB
• Mounting Depth: 2"

NVX NSP4 - Open Box, Great

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

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NVX NSP4 - Open Box, Great

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

• 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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Install kits available for most vehicles

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3
List price $49.99
-44% $27.99 /pair

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JBL Stage3 427F (STAGE3427FAM) (Open Box, Great)

300W Peak (60W RMS) 4" Stage3 Series 2-way Coaxial 3-ohm Speakers

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JBL Stage3 427F (STAGE3427FAM) (Open Box, Great)

300W Peak (60W RMS) 4" Stage3 Series 2-way Coaxial 3-ohm Speakers

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

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Install kits available for most vehicles

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List price $89.95
-46% $48.97 /pair

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NVX VSP4 - Open Box, Great

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

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NVX VSP4 - Open Box, Great

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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1
List price $71.99
-47% $38.49 /pair

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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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Install kits available for most vehicles

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List price $59.99
-30% $41.99 /pair

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

Kicker CSC5 (46CSC54) (Open Box, Great)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

46CSC54 big
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Kicker CSC5 (46CSC54) (Open Box, Great)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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Install kits available for most vehicles

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List price $119.99
-42% $69.99 /pair

In stock

Add to Cart

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

JBL Stage3 527 (Stage 3 527) (2-Pairs, 4-Total)

360W Peak (120W RMS) 5.25” Stage3 Series 2-Way 3-Ohm Coaxial Car Speakers (2-Pairs)

STAGE3527AM_2 big
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JBL Stage3 527 (Stage 3 527) (2-Pairs, 4-Total)

360W Peak (120W RMS) 5.25” Stage3 Series 2-Way 3-Ohm Coaxial Car Speakers (2-Pairs)

• 90 watts Max Each, 30 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB @2.83V
• Mounting Depth: 2-3/16"

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2
List price $219.90
-36% $139.90

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• 90 watts Max Each, 30 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB @2.83V
• Mounting Depth: 2-3/16"

DS18 EXL-SQ5.25 (Open Box, Great)

680W Peak (160W RMS) 5.25" EXL-SQ Series 2-way 3-ohm Coaxial Car Speakers

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DS18 EXL-SQ5.25 (Open Box, Great)

680W Peak (160W RMS) 5.25" EXL-SQ Series 2-way 3-ohm Coaxial Car Speakers

• 340 watts Peak Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) Dome tweeters with neodynium magnets
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 86 dB

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List price $143.95
-30% $100.76 /pair

In stock

Only 1 Left!

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Hertz CX 100 with Sound Damping

240W Peak (80W RMS) 4" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

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Hertz CX 100 with Sound Damping

240W Peak (80W RMS) 4" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 120 watts Peak Each, 40 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-Pressed Paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
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51
List price $278.74
-5% $264.98

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• 120 watts Peak Each, 40 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• Semi-Pressed Paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Alpine S2-S50 with Sound Damping

340W Peak (110W RMS) 5.25" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

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Alpine S2-S50 with Sound Damping

340W Peak (110W RMS) 5.25" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 170 watts Peak Each, 55 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Save 15% Off Package Deals at Checkout!
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49
List price $178.74
-19% $144.94

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Only 2 Left!

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• 170 watts Peak Each, 55 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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    Q: Can I upgrade or change the Speakers in 1998 Audi A4 Quattro?

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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