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2001 Audi A4 Quattro

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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 2001 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.

Lower Front Door

Lower Front Door Speakers

Speakers for your lower front door.

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 Location
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.
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Diamond Audio H65A with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

H65A_SDSK2 big
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Diamond Audio H65A with Sound Damping

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
48
$784.98

In stock.

Add to Cart

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Limited time!

Diamond Audio MP654

300W Peak (150W RMS) 6.5" Motorsport Series Pro Audio Coaxial Horn 4-ohm Speakers

MP654 big
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Diamond Audio MP654

300W Peak (150W RMS) 6.5" Motorsport Series Pro Audio Coaxial Horn 4-ohm Speakers

• 300 watts Peak Each, 150 watts RMS Each
• 1" Horn tweeters
• Impedance: 4 ohm
• Sensitivity: 101 dB

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Install kits available for most vehicles

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Fits select locations in your A4 Quattro.
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3
$439.99 /pair

In stock

Only 3 Left!

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Diamond Audio MP652

1000W Peak (500W RMS) 6.5" Motorsport Series Pro Audio Coaxial Horn 2-ohm Speakers

MP652 big
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Diamond Audio MP652

1000W Peak (500W RMS) 6.5" Motorsport Series Pro Audio Coaxial Horn 2-ohm Speakers

• 500 watts Peak Each, 250 watts RMS Each
• 1" Horn tweeters
• Impedance: 2 ohm
• Sensitivity: 101 dB

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Install kits available for most vehicles

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Fits select locations in your A4 Quattro.
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$499.99 /pair

In stock

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Limited time!

Diamond Audio H65SH

300W Peak (150W RMS) 6.5" HEX Series 4-ohm 2-Way Shallow Component Speaker System

H65SH big
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Diamond Audio H65SH

300W Peak (150W RMS) 6.5" HEX Series 4-ohm 2-Way Shallow Component Speaker System

• 150 watts Peak Each, 75 watts RMS Each
• 2" Silk Dome Tweeters
• Reinforced Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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Install kits available for most vehicles

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Fits select locations in your A4 Quattro.
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$749.99 /set

In stock.

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Limited time!

Diamond Audio H65A

300W Peak (150W RMS) 6.5" HEX Series 2-Way 4-ohm Component Speaker System

H65A big
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Diamond Audio H65A

300W Peak (150W RMS) 6.5" HEX Series 2-Way 4-ohm Component Speaker System

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Free Speaker Accessory Kit at Checkout!
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Install kits available for most vehicles

additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
$769.99 /set

In stock.

Add to Cart
See all 14 special offers

Diamond Audio MS65NEO

1200W Peak (600W RMS) 6.5" MS Series Midrange 4-ohm Car Speakers

MS65NEO big
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Diamond Audio MS65NEO

1200W Peak (600W RMS) 6.5" MS Series Midrange 4-ohm Car Speakers

• 600 watts Peak Each, 300 watts RMS Each
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

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VIP Product Get $77.00 in rewards to spend later

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Install kits available for most vehicles

additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
1
$769.99 /pair

In stock.

Add to Cart

• 600 watts Peak Each, 300 watts RMS Each
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

Diamond Audio MP654 with Sound Damping

300W Peak (150W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker - Pair + NVX SDSK2 Sound Damping

MP654_SDSK2 big
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Diamond Audio MP654 with Sound Damping

300W Peak (150W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker - Pair + NVX SDSK2 Sound Damping

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Save 15% Off Package Deals at Checkout!
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Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
51
List price $458.73
$454.98

In stock

Only 3 Left!

Add to Cart

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Diamond Audio MP654 (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker (2-Pairs)

MP654_2 big
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Diamond Audio MP654 (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" Motorsport Series PRO Full-Range Co-Ax Horn Speaker (2-Pairs)

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
3
$879.98

In stock

Only 1 Left!

Add to Cart

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Diamond Audio MP654 with Speaker Installation Kit

Includes: (2) 6.5" Full-range speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

MP654, XBAF65, SDRLR1, SDSK2, BTK106 big
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Diamond Audio MP654 with Speaker Installation Kit

Includes: (2) 6.5" Full-range speaker, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
259
List price $527.70
-8% $483.52 /pair

In stock

Only 3 Left!

Add to Cart

• 300 watts Max Each, 150 watts RMS Each
• 1" Horn Tweeters
• Impedance: N/A
• Sensitivity: 101 dB
• Mounting Depth: 3.33"

Diamond Audio H65SH with Sound Damping

300W Peak (150W RMS) 6.5" HEX 2-Way Shallow Component Speakers + NVX SDSK2 Sound Damping

H65SH_SDSK2 big
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Diamond Audio H65SH with Sound Damping

300W Peak (150W RMS) 6.5" HEX 2-Way Shallow Component Speakers + NVX SDSK2 Sound Damping

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
48
$764.98

In stock.

Add to Cart

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

Diamond Audio MS65NEO (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" MS Series Midrange Coaxial Car Speakers (2-Pairs)

MS65NEO_2 big
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Diamond Audio MS65NEO (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" MS Series Midrange Coaxial Car Speakers (2-Pairs)

• 300 watts Max Each, 150 watts RMS Each
• Tweeters
• Waterproof black Dupont Kevlar cone and dust cap
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
1
$1,539.98

In stock.

Add to Cart

• 300 watts Max Each, 150 watts RMS Each
• Tweeters
• Waterproof black Dupont Kevlar cone and dust cap
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

Diamond Audio H65A (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Series 2-Way Component Speaker System (2-Pairs)

H65A_2 big
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Diamond Audio H65A (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX Series 2-Way Component Speaker System (2-Pairs)

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
$1,539.98

In stock.

Add to Cart

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Diamond Audio H65SH with Installation Accessories

150W RMS 6.5" HEX 2-Way Shallow Component Speakers with Speake Baffles, Sound Damping, Roller, and Panel Removal Kit

H65SH, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio H65SH with Installation Accessories

150W RMS 6.5" HEX 2-Way Shallow Component Speakers with Speake Baffles, Sound Damping, Roller, and Panel Removal Kit

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
256
$793.52 /pair

In stock.

Add to Cart

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

Diamond Audio MS65NEO with Installation Accessories

150W RMS 6.5" Midrange Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

MS65NEO, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio MS65NEO with Installation Accessories

150W RMS 6.5" Midrange Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 300 watts Max Each, 150 watts RMS Each
• Tweeters
• Waterproof black Dupont Kevlar cone and dust cap
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
257
$813.52 /pair

In stock.

Add to Cart

• 300 watts Max Each, 150 watts RMS Each
• Tweeters
• Waterproof black Dupont Kevlar cone and dust cap
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

Diamond Audio H65A with Speaker Installation Kit

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

H65A, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio H65A with Speaker Installation Kit

300W Peak (150W RMS) 6.5" HEX Series 2-Way Component Speaker System + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
256
$813.52 /set

In stock.

Add to Cart

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

Diamond Audio H65SH (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX 2-Way Shallow Component Speakers (2-Pairs)

H65SH_2 big
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Diamond Audio H65SH (2-Pairs, 4-Total)

600W Peak (300W RMS) 6.5" HEX 2-Way Shallow Component Speakers (2-Pairs)

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
$1,499.98

In stock.

Add to Cart

• 150 watts Max Each, 75 watts RMS Each
• 2" Neodymium tweeters available in silk or aluminum
• Hard anodized black aluminum cone
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 1.3"

Diamond Audio MS65NEO with Sound Damping

300W Peak (150W RMS) 6.5" MS Series Midrange Coaxial Car Speakers + NVX SDSK2 Sound Damping

MS65NEO_SDSK2 big
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Diamond Audio MS65NEO with Sound Damping

300W Peak (150W RMS) 6.5" MS Series Midrange Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 300 watts Max Each, 150 watts RMS Each
• Tweeters
• Waterproof black Dupont Kevlar cone and dust cap
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
49
$784.98

In stock.

Add to Cart

• 300 watts Max Each, 150 watts RMS Each
• Tweeters
• Waterproof black Dupont Kevlar cone and dust cap
• Impedance: 4 ohm
• Sensitivity: 94 dB
• Mounting Depth: 2.78"

Limited time!

Diamond Audio DMDX6525C

270W Peak (90W RMS) 6.5" DMD Series 3-Way Component 4-ohm Speakers

DMDX6525C big Out of stock
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Diamond Audio DMDX6525C

270W Peak (90W RMS) 6.5" DMD Series 3-Way Component 4-ohm Speakers

• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Dome Tweeters
• 2.5" Speakers included
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Free Baffles with Select Speakers Shop deal
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VIP Product Get $38.00 in rewards to spend later

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Install kits available for most vehicles

additional information required
Fits select locations in your A4 Quattro.
Add vehicle details to confirm exact location.
$379.99 /set
Add to Cart

• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Dome Tweeters
• 2.5" Speakers included
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

 
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    FAQ for Speakers in 2001 A4 Quattro

    Q: Can I upgrade or change the Speakers in 2001 Audi A4 Quattro?

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

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