Garage
Shop
Loading...
Filters
filter-icon Filters & Sort

NVX VSP525

480W Peak (160W RMS) 5.25" V-Series 2 Way Coaxial Car Speakers

VSP525 big
Go to item page Right Arrow Icon of Right Arrow

480W Peak (160W RMS) 5.25" V-Series 2 Way Coaxial Car Speakers

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $8.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
23
List price $95.99
-17% $79.99 /pair

In stock

Continue to cart

Available Offers (2) for NVX VSP525
Offer image
Dads & Grads Sale! Save 15% at Checkout!
List price $95.99
-17% $79.99
$67.99 with coupon | Price details
2026-06-30 23:59:00
Free Speaker Accessory at Checkout!

Kicker CSC5 (46CSC54) (Like New (Open Box))

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

46CSC54 big
Go to item page Right Arrow Icon of Right Arrow

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $119.99
-29% $84.99 /pair

In stock

Only 2 Left!

• 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

Limited time!

Pioneer TS-G1320S

500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers

TS-G1320S big
Go to item page Right Arrow Icon of Right Arrow

500W Peak (70W RMS) 5.25" G-Series 2-way 4-ohm Coaxial Car Speakers

• 250 watts Peak Each, 35 watts RMS Each
• 1-3/16" Polyethylene Terephthalate (PET) Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material with Progressive Flex Suspension System (PFSS) spider
• Impedance: 4 ohm
• Sensitivity: 87 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
7
List price $65.00
Save 31%
-31% $44.99 /pair

In stock

Used from: $39.99

JBL GT7-5C with Sound Damping

270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

GT75C_SDBSK2 big
Go to item page Right Arrow Icon of Right Arrow

270W Peak (90W RMS) 5.25" GT7-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your A4 Quattro
50
List price $168.69
-20% $134.94

In stock

Only 1 Left!

• 135 watts Peak Each, 45 watts RMS Each
• 1-3/16" Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

JBL Stadium 52CF (Open Box, Great)

480W Peak (160W RMS) 5.25" Stadium Series 2-way Component 3-ohm Speakers

Stadium 52CF big
Go to item page Right Arrow Icon of Right Arrow

480W Peak (160W RMS) 5.25" Stadium Series 2-way Component 3-ohm Speakers

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Aluminum Edge-driven Dome tweeters
• Glass Fiber Plus One cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $479.95
-34% $314.97 /set

In stock

Only 1 Left!

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Aluminum Edge-driven Dome tweeters
• Glass Fiber Plus One cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Limited time!

MTX Audio THUNDER52

180W Peak (90W RMS) 5.25" Thunder Series 2 Way Coaxial 4-ohm Speakers

THUNDER52 big
Go to item page Right Arrow Icon of Right Arrow

180W Peak (90W RMS) 5.25" Thunder Series 2 Way Coaxial 4-ohm Speakers

• 45 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $9.60 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
2
List price $119.95
Save $23.99
-20% $95.96 /pair

In stock

Polk Audio MM522 (MM 522) (Open Box, Good)

480W Peak (160W RMS) 5.25" Mobile Monitor Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

MM522 big
Go to item page Right Arrow Icon of Right Arrow

480W Peak (160W RMS) 5.25" Mobile Monitor Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

• 240 watts Peak Each, 80 watts RMS Each
• 1" Terylene Dome tweeters
• Titanium-plated Polymer cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $199.99
-46% $107.40 /pair

In stock

Only 1 Left!

• 240 watts Peak Each, 80 watts RMS Each
• 1" Terylene Dome tweeters
• Titanium-plated Polymer cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Limited time!

Rockford Fosgate Punch P1 P152

160W Peak (80W RMS) 5.25" Punch Series 2 Way Coaxial 4-ohm Speakers

P152 big
Go to item page Right Arrow Icon of Right Arrow

160W Peak (80W RMS) 5.25" Punch Series 2 Way Coaxial 4-ohm Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $11.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
27
$109.99 /pair

In stock

Used from: $93.49
Limited time!

Rockford Fosgate Power T1 T152

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

T152 big
Go to item page Right Arrow Icon of Right Arrow

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

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $22.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
22
$219.99 /pair

In stock

Only 2 Left!

Used from: $186.99

Kicker DSC50 (43DSC504) (Open Box, Good)

400W Peak (100W RMS) 5.25" DS Series 2-way 4-ohm Coaxial Car Speakers (DSC504)

43DSC504 big
Go to item page Right Arrow Icon of Right Arrow

400W Peak (100W RMS) 5.25" DS Series 2-way 4-ohm Coaxial Car Speakers (DSC504)

• 200 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $84.99
-47% $44.99 /pair

In stock

Only 1 Left!

• 200 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Limited time!

Infinity Kappa 303S (INFSPKKA303SAM)

330W Peak (110W RMS) 3” Kappa Series Component Midrange 3-ohm Speakers

Kappa 303S big
Go to item page Right Arrow Icon of Right Arrow

330W Peak (110W RMS) 3” Kappa Series Component Midrange 3-ohm Speakers

• 165 watts Peak Each, 55 watts RMS Each
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $16.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Center Dash
  • Dash Corner
2
List price $249.95
Save $90.00
-36% $159.95 /pair

In stock

Cerwin-Vega H525C

600W Peak (200W RMS) 5.25" HED Series 4-ohm 2-Way Component Speaker System

H525C big
Go to item page Right Arrow Icon of Right Arrow

600W Peak (200W RMS) 5.25" HED Series 4-ohm 2-Way Component Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Responsive Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

1+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $19.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $227.99
-17% $189.99 /set

In stock

Continue to cart

Available Offers (2) for Cerwin-Vega H525C
Offer image
Flash Sale! Save at Checkout!
List price $227.99
-17% $189.99
$170.99 with coupon | Price details
Free Speaker Accessory at Checkout!
Limited time!

Kicker KSS5 (51KSS504)

400W Peak (200W RMS) 5.25" KS Series 2 Way Component 4-ohm Speaker System

51KSS504 big
Go to item page Right Arrow Icon of Right Arrow

400W Peak (200W RMS) 5.25" KS Series 2 Way Component 4-ohm Speaker System

• 200 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $25.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
2
List price $279.99
-11% $249.99 /set

In stock

Only 2 Left!

Limited time!

Pioneer TS-A1301C

600W Peak (100W RMS) 5.25" A-Series 2-Way 4-ohm Component Speakers

TS-A1301C big
Go to item page Right Arrow Icon of Right Arrow

600W Peak (100W RMS) 5.25" A-Series 2-Way 4-ohm Component Speakers

• 300 watts Peak Each, 50 watts RMS Each
• 1-3/16" Polyetherimide Hard Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $14.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $170.00
-18% $140.00 /set

In stock

Only 3 Left!

Limited time!

MTX Audio TERMINATOR52

140W Peak (70W RMS) 5.25" Terminator Series 2 Way Component 4-ohm Speakers

TERMINATOR52 big
Go to item page Right Arrow Icon of Right Arrow

140W Peak (70W RMS) 5.25" Terminator Series 2 Way Component 4-ohm Speakers

• 70 watts Peak Each, 35 watts RMS Each
• 1" Mylar Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 83.6 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
5
List price $129.95
-69% $39.99 /set

In stock

Only 1 Left!

Limited time!

AudioControl PNW-525

150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Car Speakers

PNW-525 big
Go to item page Right Arrow Icon of Right Arrow

150W Peak (100W RMS) 5.25″ PNW Series 2-way 3-ohm Coaxial Car Speakers

• 75 watts Peak Each, 50 watts RMS Each
• Hybrid Silk Dome tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.41 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $23.90 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
1
List price $259.00
-8% $239.00 /pair

Available

Ships in 10-14 days

Limited time!

Kicker PS52504 (10PS52504)

200W Peak (100W RMS) 5.25” PS Series 2-Way Coaxial 4-Ohm Harley-Davidson Powersports and Motorcycle Speakers

10PS52504 big
Go to item page Right Arrow Icon of Right Arrow

200W Peak (100W RMS) 5.25” PS Series 2-Way Coaxial 4-Ohm Harley-Davidson Powersports and Motorcycle Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Titanium Dome Tweeter
• Protective speaker grilles included
• Polypropylene Material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB
• Mounting Depth: 2-3/16"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $169.99
Save $50.03
-29% $119.96 /pair

In stock

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Titanium Dome Tweeter
• Protective speaker grilles included
• Polypropylene Material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB
• Mounting Depth: 2-3/16"

Hifonics ZS525CX

400W Peak (60W RMS) 5.25” Zeus Series 2-way 4-ohm Coaxial Car Speakers

ZS525CX big
Go to item page Right Arrow Icon of Right Arrow

400W Peak (60W RMS) 5.25” Zeus Series 2-way 4-ohm Coaxial Car Speakers

• 200 watts Peak Each, 30 watts RMS Each
• 1" Neo-Mylar Soft Dome tweeters with Kapton former
• Alpha-Cellulose cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
7
List price $28.99
-31% $19.99 /pair

In stock

Limited time!

Earthquake Sound VTEK-MC5

1000W RMS 5.25" VTEK Series 2-Way Component 4-ohm Car Speaker System

VTEK-MC5 big
Go to item page Right Arrow Icon of Right Arrow

1000W RMS 5.25" VTEK Series 2-Way Component 4-ohm Car Speaker System

• 500 watts RMS Each
• 1" Silk Dome Tweeters
• Electroplated Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $23.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
List price $249.00
-8% $229.99 /set

In stock.

JL Audio C1-525x

100W RMS 5.25" C1 Series 2 Way Coaxial 4-ohm Car Speakers

C1-525x big
Go to item page Right Arrow Icon of Right Arrow

100W RMS 5.25" C1 Series 2 Way Coaxial 4-ohm Car Speakers

• 50 watts RMS Each
• 3/4" Silk-Suspended Aluminum Edge Driven Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $13.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A4 Quattro
  • Front Door
  • Rear Seat Side Panel
6
$129.99 /pair

In stock

Used from: $110.49

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Speakers in 2008 A4 Quattro

    Q: Can I upgrade or change the Speakers in 2008 Audi A4 Quattro?

    A: Yes this page includes all the best Speakers that work in your A4 Quattro.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store
    Delete

    1990 Chrysler Imperial

    2008 Audi A4 Quattro

    1985 GMC C2500 Pickup

    2006 Dodge Durango

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

    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.