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1981 Audi 4000

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Overview 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 1981 Audi 4000

Find speakers to upgrade your sound and fit in the factory speaker location for your 4000.  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.

Dash Corner

Dash Corner Speakers

Speakers for your dash corner

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Rear Deck Corner

Rear Deck Corner Speakers

Speakers for your corner rear deck

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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.
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Alpine S2-S65C with Sound Damping

480W Peak (160W RMS) 6.5" S-Series 2-way Component Speaker System + NVX SDSK2 Sound Damping

S2S65C_SDSK2 big
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Alpine S2-S65C with Sound Damping

480W Peak (160W RMS) 6.5" S-Series 2-way Component Speaker System + NVX SDSK2 Sound Damping

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

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49
List price $238.74
-18% $194.94

In stock

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

Rockford Fosgate Power T1693 with Sound Damping

400W Peak (200W RMS) 6x9" Power Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweete + NVX SDBSK2 Premium Sound Dampingrs

09-T1693_SDBSK2 big
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Rockford Fosgate Power T1693 with Sound Damping

400W Peak (200W RMS) 6x9" Power Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweete + NVX SDBSK2 Premium Sound Dampingrs

• 200 watts Peak Each, 100 watts RMS Each
• Dual 1" Aluminum Dome tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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80
List price $318.73
$314.98

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• 200 watts Peak Each, 100 watts RMS Each
• Dual 1" Aluminum Dome tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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Alpine S2-S69 with Sound Damping

520W Peak (170W RMS) 6x9" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

S2S69_SDSK2 big
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Alpine S2-S69 with Sound Damping

520W Peak (170W RMS) 6x9" S-Series 2-way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 260 watts Peak Each, 85 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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51
List price $218.74
-15% $184.94

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• 260 watts Peak Each, 85 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

JVC CS-DR601C with Sound Damping

720W Peak (120W RMS) 6.5" DRVN Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

CS-DR601CCSDR601C_SDBSK2 big
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JVC CS-DR601C with Sound Damping

720W Peak (120W RMS) 6.5" DRVN Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 360 watts Peak Each, 60 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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48
List price $197.74
-12% $173.99

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• 360 watts Peak Each, 60 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Alpine R2-S69 with Sound Damping

600W Peak (200W RMS) 6x9" R-Series 2-Way Coaxial Speakers with Magnesium Hard-Dome Tweeters + NVX SDSK2 Sound Damping

R2S69_SDSK2 big
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Alpine R2-S69 with Sound Damping

600W Peak (200W RMS) 6x9" R-Series 2-Way Coaxial Speakers with Magnesium Hard-Dome Tweeters + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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48
List price $498.74
-33% $334.94

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• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Alpine R2-S65C with Sound Damping

600W Peak (200W RMS) 6.5" R-Series 2-Way Component Speakers with Magnesium Hard-Dome Tweeters + NVX SDSK2 Sound Damping

R2S65C_SDSK2 big
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Alpine R2-S65C with Sound Damping

600W Peak (200W RMS) 6.5" R-Series 2-Way Component Speakers with Magnesium Hard-Dome Tweeters + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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Fits your 4000
49
List price $498.74
-33% $334.94

In stock

Add to Cart

• 300 watts Peak Each, 100 watts RMS Each
• 1" Magnesium Hard Dome Tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Infinity PR9693M with Sound Damping

360W Peak (120W RMS) 6x9” Coaxial Car Speakers + NVX SDSK2 Sound Damping

PR9693M_SDSK2 big
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Infinity PR9693M with Sound Damping

360W Peak (120W RMS) 6x9” Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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Fits your 4000
49
List price $198.69
-17% $164.95

In stock

Only 1 Left!

Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Pioneer TS-A1601C with Sound Damping

700W Peak (160W RMS) 6.5” A-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

TSA1601C_SDBSK2 big
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Pioneer TS-A1601C with Sound Damping

700W Peak (160W RMS) 6.5” A-Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 350 watts Peak Each, 80 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 4000
50
List price $198.74
-17% $164.99

In stock

Only 2 Left!

Add to Cart

• 350 watts Peak Each, 80 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Pioneer TS-A6901C with Sound Damping

900W Peak (200W RMS) 6x9" A-Series 2-way 4-ohm Component Car Speakers + NVX SDBSK2 Premium Sound Damping

TSA6901C_SDBSK2 big
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Pioneer TS-A6901C with Sound Damping

900W Peak (200W RMS) 6x9" A-Series 2-way 4-ohm Component Car Speakers + NVX SDBSK2 Premium Sound Damping

• 450 watts Peak Each, 100 watts RMS Each
• 3/4" Polyetherimide Hard Dome tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your 4000
48
List price $198.74
-17% $164.99

In stock

Add to Cart

• 450 watts Peak Each, 100 watts RMS Each
• 3/4" Polyetherimide Hard Dome tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Alpine S2-S40C with Sound Damping

280W Peak (90W RMS) 4" Next-Generation S-Series 2-way Component Speaker System + NVX SDSK2 Sound Damping

S2S40C_SDSK2 big
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Alpine S2-S40C with Sound Damping

280W Peak (90W RMS) 4" Next-Generation S-Series 2-way Component Speaker System + NVX SDSK2 Sound Damping

• 140 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Save 15% Off Package Deals at Checkout!
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Fits your 4000
49
List price $198.74
-25% $149.95

In stock

Add to Cart

• 140 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Infinity Primus 603CF (PR603CF) with Sound Damping

360W Peak (120W RMS) 6.5" Primus Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

PR603CF_SDSK2 big
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Infinity Primus 603CF (PR603CF) with Sound Damping

360W Peak (120W RMS) 6.5" Primus Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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49
List price $178.69
-19% $144.94

In stock

Only 2 Left!

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• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Diamond Audio DES65C with Sound Damping

240W Peak (120W RMS) 6.5" DES Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

DES65C_SDSK2 big
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Diamond Audio DES65C with Sound Damping

240W Peak (120W RMS) 6.5" DES Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 60 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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48
$374.98

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Only 3 Left!

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• 60 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Hertz DCX87.3 with Sound Damping

120W Peak (60W RMS) 3.5” Dieci Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DCX873_SDSK2 big
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Hertz DCX87.3 with Sound Damping

120W Peak (60W RMS) 3.5” Dieci Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 60 watts Peak Each, 30 watts RMS Each
• 5/8 PEI (Polyetherimide) Dome Tweeters
• Water-repellent treated paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
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52
List price $133.74
-14% $114.98

In stock

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• 60 watts Peak Each, 30 watts RMS Each
• 5/8 PEI (Polyetherimide) Dome Tweeters
• Water-repellent treated paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Limited time!

NVX XSP652 with Sound Damping

600W Peak (200W RMS) 6.5" X-Series 2-Way Coaxial Speakers with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

XSP652_SDBSK2 big
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NVX XSP652 with Sound Damping

600W Peak (200W RMS) 6.5" X-Series 2-Way Coaxial Speakers with Carbon Fiber Cones and 25mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 300 watts Max Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Lightweight Carbon Fiber cone
• Impedance: 4 ohm
• Sensitivity: 92 dB
• Mounting Depth: 2.52"

Purchase $400 or More of NVX and Save 15%!
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67
List price $198.73
-34% $130.48

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• 300 watts Max Each, 100 watts RMS Each
• 1" Silk Dome Tweeters
• Lightweight Carbon Fiber cone
• Impedance: 4 ohm
• Sensitivity: 92 dB
• Mounting Depth: 2.52"

Pioneer TS-A1081F with Sound Damping

460W Peak (100W RMS) 4” A Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

TSA1081F_SDBSK2 big
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Pioneer TS-A1081F with Sound Damping

460W Peak (100W RMS) 4” A Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 230 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Hard Dome tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Fits your 4000
51
List price $128.74
-18% $104.99

In stock

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• 230 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Hard Dome tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Rockford Fosgate Punch P132 with Sound Damping

80W Peak (40W RMS) 3.5” Punch Series 2-way 4-ohm Full Range Speaker + NVX SDBSK2 Premium Sound Damping

09-P132_SDBSK2 big
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Rockford Fosgate Punch P132 with Sound Damping

80W Peak (40W RMS) 3.5” Punch Series 2-way 4-ohm Full Range Speaker + NVX SDBSK2 Premium Sound Damping

• 40 watts Peak Each, 20 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Save 15% Off Package Deals at Checkout!
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91
List price $108.73
$104.98

In stock

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• 40 watts Peak Each, 20 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Cerwin Vega XED42 with Sound Damping

500W Peak (40W RMS) 4" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

XED42_SDSK2 big
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Cerwin Vega XED42 with Sound Damping

500W Peak (40W RMS) 4" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 250 watts Peak Each, 20 watts RMS Each
• 1" Metallic Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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Fits your 4000
52
List price $66.73
-18% $54.98

In stock

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• 250 watts Peak Each, 20 watts RMS Each
• 1" Metallic Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Cerwin-Vega XED62 with Sound Damping

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

XED62_SDSK2 big
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Cerwin-Vega XED62 with Sound Damping

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 35 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Fits your 4000
63
List price $78.73
-23% $60.48

In stock

Add to Cart

• 300 watts Peak Each, 35 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Cerwin-Vega XED650C with Sound Damping

600W Peak (70W RMS) 6.5" XED Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

XED650C_SDSK2 big
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Cerwin-Vega XED650C with Sound Damping

600W Peak (70W RMS) 6.5" XED Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 35 watts RMS Each
• 1/2" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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76
List price $96.73
-17% $79.98

In stock

Add to Cart

• 300 watts Peak Each, 35 watts RMS Each
• 1/2" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Cerwin Vega H735 with Sound Damping

500W Peak (50W RMS) 3.5" HED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

H735_SDSK2 big
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Cerwin Vega H735 with Sound Damping

500W Peak (50W RMS) 3.5" HED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 250 watts Peak Each, 25 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohm
• Sensitivity: 84.5 dB

Save 15% Off Package Deals at Checkout!
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82
List price $90.73
-17% $74.98

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Add to Cart

• 250 watts Peak Each, 25 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohm
• Sensitivity: 84.5 dB

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    A: Yes this page includes all the best Speakers that work in your 4000.

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    Identify your vehicle and submodel details
    • Owner's manual
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    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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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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