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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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Lowest price in 30 days

Infinity REF697F with Installation Accessories

600W Peak (200W RMS) 6x9" Reference Series 2-way 4-ohm Speakers + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

REF697F_ACC_KIT big
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Infinity REF697F with Installation Accessories

600W Peak (200W RMS) 6x9" Reference Series 2-way 4-ohm Speakers + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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276
List price $262.66
-40% $158.73

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• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Lowest price in 30 days

MTX Audio THUNDER693 with Sound Damping

200W RMS 6x9" Thunder Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

THUNDER693_SDBSK2 big
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MTX Audio THUNDER693 with Sound Damping

200W RMS 6x9" Thunder Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters + NVX SDBSK2 Premium Sound Damping

• 100 watts RMS Each
• 1-3/16" dual Silk Cone tweeters
• Polypropylene cone material
• 1" Silk Dome super tweeters
• Impedance: 4 ohm
• Sensitivity: 92 dB

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50
List price $208.69
-20% $166.95

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• 100 watts RMS Each
• 1-3/16" dual Silk Cone tweeters
• Polypropylene cone material
• 1" Silk Dome super tweeters
• Impedance: 4 ohm
• Sensitivity: 92 dB

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Pioneer TS-D69C with Sound Damping

660W Peak (220W RMS) 6x9" D Series 2-way 4-ohm Component Car Speakers + NVX SDBSK2 Premium Sound Damping

TSD69C_SDBSK2 big
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Pioneer TS-D69C with Sound Damping

660W Peak (220W RMS) 6x9" D Series 2-way 4-ohm Component Car Speakers + NVX SDBSK2 Premium Sound Damping

• 330 watts Peak Each, 110 watts RMS Each
• 1" Polyester Fiber Soft Dome tweeters
• Aramid fiber reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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48
List price $278.74
-40% $167.99

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• 330 watts Peak Each, 110 watts RMS Each
• 1" Polyester Fiber Soft Dome tweeters
• Aramid fiber reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

AudioControl PNW-69CS2 with Sound Damping

250W Peak (150W RMS) 6x9″ PNW Series 2-way 3-ohm Component Speaker System + NVX SDSK2 Sound Damping

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AudioControl PNW-69CS2 with Sound Damping

250W Peak (150W RMS) 6x9″ PNW Series 2-way 3-ohm Component Speaker System + NVX SDSK2 Sound Damping

• 125 watts Peak Each, 75 watts RMS Each
• 3/4" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.78 dB

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49
List price $387.74
-6% $363.99

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• 125 watts Peak Each, 75 watts RMS Each
• 3/4" Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 88.78 dB

Hertz DCX100.3 with Sound Damping

120W Peak (60W RMS) 4" Dieci Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

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Hertz DCX100.3 with Sound Damping

120W Peak (60W RMS) 4" Dieci Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

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List price $168.74
-14% $144.98

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• 30 Watts Max Each, 15 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI dome tweeter
• 4 Ohm Impedance
• Sensitivity: 92 dB
• Mounting Depth: 1-3/4"

Hertz CPX 165 with Sound Damping

570W Peak (190W RMS) 6.5" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

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Hertz CPX 165 with Sound Damping

570W Peak (190W RMS) 6.5" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 285 watts Peak Each, 95 watts RMS Each
• 0.9 Tetolon Dome Tweeters
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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List price $423.74
-14% $364.98

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• 285 watts Peak Each, 95 watts RMS Each
• 0.9 Tetolon Dome Tweeters
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Lowest price in 30 days

Infinity REF697MF with Sound Damping

600W Peak (200W RMS) 6x9" Reference Series 3-way 4-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

REF697MF_SDSK2 big
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Infinity REF697MF with Sound Damping

600W Peak (200W RMS) 6x9" Reference Series 3-way 4-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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50
List price $218.69
-31% $150.94

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• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

JVC CS-DR6941 with Sound Damping

1100W Peak (180W RMS) 6x9" DRVN Series 4-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

CSDR6941_SDBSK2 big
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JVC CS-DR6941 with Sound Damping

1100W Peak (180W RMS) 6x9" DRVN Series 4-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 550 watts Peak Each, 90 watts RMS Each
• 1" and 19/32" PEI (Polyetherimide) Dome Tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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48
List price $167.74
-14% $143.99

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• 550 watts Peak Each, 90 watts RMS Each
• 1" and 19/32" PEI (Polyetherimide) Dome Tweeters
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Kenwood KFC-P710PS with Sound Damping

560W Peak (160W RMS) 6.5" Performance Series 2-way 4-ohm Component Car Speakers + NVX SDBSK2 Premium Sound Damping

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Kenwood KFC-P710PS with Sound Damping

560W Peak (160W RMS) 6.5" Performance Series 2-way 4-ohm Component Car Speakers + NVX SDBSK2 Premium Sound Damping

• 280 watts Peak Each, 80 watts RMS Each
• 1" Soft Dome swivel tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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49
List price $228.74
-34% $151.99

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• 280 watts Peak Each, 80 watts RMS Each
• 1" Soft Dome swivel tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Alpine R2-S69C with Sound Damping

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

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Alpine R2-S69C with Sound Damping

600W Peak (200W RMS) 6x9" 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

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List price $558.74
-33% $374.94

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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

Hertz CX 690 with Installation Accessories

600W Peak (200W RMS) 6x9" Cento Series 3-Way Coaxial Car Speakers + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

CX690_ACC_KIT big
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Hertz CX 690 with Installation Accessories

600W Peak (200W RMS) 6x9" Cento Series 3-Way Coaxial Car Speakers + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 1-5/8 PEI (Polyetherimide) Dome Tweeters
• Semi-pressed paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 94.5 dB

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273
List price $487.71
-19% $396.20

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• 300 watts Peak Each, 100 watts RMS Each
• 1-5/8 PEI (Polyetherimide) Dome Tweeters
• Semi-pressed paper + Mica cone material
• Impedance: 4 ohm
• Sensitivity: 94.5 dB

Lowest price in 30 days

Infinity REF407F with Sound Damping

210W Peak (70W RMS) 4" Reference Series 2-way 3-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

REF407F_SDSK2 big
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Infinity REF407F with Sound Damping

210W Peak (70W RMS) 4" Reference Series 2-way 3-ohm Coaxial Speakers + NVX SDSK2 Sound Damping

• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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48
List price $158.69
-35% $102.94

In stock

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• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Lowest price in 30 days

Infinity REF407F with Installation Accessories

210W Peak (70W RMS) 4" Reference Series 2-way 3-ohm Coaxial Speakers + 4" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

REF407F_ACC_KIT big
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Infinity REF407F with Installation Accessories

210W Peak (70W RMS) 4" Reference Series 2-way 3-ohm Coaxial Speakers + 4" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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225
List price $211.66
-41% $125.01

In stock

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• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

JVC CS-DR621 with Sound Damping

600W Peak (100W RMS) 6.5" DRVN Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

CSDR621_SDBSK2 big
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JVC CS-DR621 with Sound Damping

600W Peak (100W RMS) 6.5" DRVN Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 50 watts RMS Each
• 1" Polyetherimide Balanced Dome tweeters with neodymium magnets
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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51
List price $137.74
-17% $113.99

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• 300 watts Peak Each, 50 watts RMS Each
• 1" Polyetherimide Balanced Dome tweeters with neodymium magnets
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

JVC CS-DR421 with Sound Damping

440W Peak (70W RMS) 4" DR Series 2-Way 4-Ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

CSDR421_SDBSK2 big
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JVC CS-DR421 with Sound Damping

440W Peak (70W RMS) 4" DR Series 2-Way 4-Ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 220 watts Peak Each, 35 watts RMS Each
• 1" Polyetherimide Balanced tweeters
• 2 wide opening speaker grilles
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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48
List price $137.74
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• 220 watts Peak Each, 35 watts RMS Each
• 1" Polyetherimide Balanced tweeters
• 2 wide opening speaker grilles
• Carbon Mica cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

DS18 ZXI-654 with Sound Damping

480W Peak (160W RMS) 6.5" ZXI Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

ZXI654_SDBSK2 big
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DS18 ZXI-654 with Sound Damping

480W Peak (160W RMS) 6.5" ZXI Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 240 watts Peak Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) tweeters with neodymium magnets
• Glass Fiber cone material with KSV former
• Impedance: 4 ohm
• Sensitivity: 89 dB

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List price $113.69
-7% $105.44

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• 240 watts Peak Each, 80 watts RMS Each
• 1" PEI (Polyetherimide) tweeters with neodymium magnets
• Glass Fiber cone material with KSV former
• Impedance: 4 ohm
• Sensitivity: 89 dB

DS18 PRO-ZT6 (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-ZT Series 4-ohm Water-Resistant Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

PROZT6_SDBSK2 big
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DS18 PRO-ZT6 (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-ZT Series 4-ohm Water-Resistant Midrange Loudspeaker + NVX SDBSK2 Premium Sound Damping

• 450 watts Max, 225 watts RMS
• 1" Aluminum Alloy Bullet tweeter
• Water-Resistant Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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List price $114.69
-7% $106.44

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• 450 watts Max, 225 watts RMS
• 1" Aluminum Alloy Bullet tweeter
• Water-Resistant Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

MTX TERMINATOR6S with Sound Damping

90W RMS 6.5" Terminator Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

TERMINATOR6S_SDBSK2 big
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MTX TERMINATOR6S with Sound Damping

90W RMS 6.5" Terminator Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 45 watts RMS Each
• 1" Silk Dome tweeters with inline crossover
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

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48
List price $118.69
-12% $104.94

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• 45 watts RMS Each
• 1" Silk Dome tweeters with inline crossover
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85.5 dB

Lowest price in 30 days

MTX Audio THUNDER65 with Sound Damping

240W Peak (120W RMS) 6.5" Thunder Dome Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

THUNDER65_SDBSK2 big
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MTX Audio THUNDER65 with Sound Damping

240W Peak (120W RMS) 6.5" Thunder Dome Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 120 watts Peak Each, 60 watts RMS Each
• 1" Silk Pivoting Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
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51
List price $188.73
-41% $110.95

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• 120 watts Peak Each, 60 watts RMS Each
• 1" Silk Pivoting Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Limited time!

NVX NSP69KIT with Sound Damping

920W Peak (320W RMS) 6x9" N-Series 2-Way Component Speakers with 20mm Silk Down Tweeters + NVX SDBSK2 Premium Sound Damping

NSP69KIT_SDBSK2 big
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NVX NSP69KIT with Sound Damping

920W Peak (320W RMS) 6x9" N-Series 2-Way Component Speakers with 20mm Silk Down Tweeters + NVX SDBSK2 Premium Sound Damping

• 460 watts Peak Each, 160 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.95"

Purchase $400 or More of NVX and Save 15%!
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List price $150.73
-20% $120.48

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• 460 watts Peak Each, 160 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.95"

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    Q: Can I upgrade or change the Speakers in 1981 Audi 4000?

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

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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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