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  4. Diamond Audio Speakers with Sound Deadening

Diamond Audio Speakers with Sound Deadening for your 2009 A5 Quattro close

Improve your system's efficiency with Diamond Audio's speakers with sound deadening.

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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.
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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

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Fits your A5 Quattro
48
$784.98

In stock.

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• 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 DMD653 with Sound Damping

200W Peak (100W RMS) 6.5" DMD Series 3-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DMD653_SDSK2 big
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Diamond Audio DMD653 with Sound Damping

200W Peak (100W RMS) 6.5" DMD Series 3-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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Fits your A5 Quattro
48
List price $168.73
-6% $157.98

In stock

Only 1 Left!

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• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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"

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Fits your A5 Quattro
51
List price $458.73
$454.98

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Only 3 Left!

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

Diamond Audio H65S with Sound Damping

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

H65S_SDSK2 big
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Diamond Audio H65S 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.
found car based on your search
Fits your A5 Quattro
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

Diamond Audio DESK3 with Sound Damping

100W Peak (50W RMS) 3.5" Elite Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

DESK3_SDSK2 big
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Diamond Audio DESK3 with Sound Damping

100W Peak (50W RMS) 3.5" Elite Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

• 100 watts Peak Each, 25 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 83 dB

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Fits your A5 Quattro
48
List price $308.73
$304.98

In stock

Only 1 Left!

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• 100 watts Peak Each, 25 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 83 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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Fits your A5 Quattro
48
$374.98

In stock

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

Diamond Audio MSPRO8 with Sound Damping

1000W Peak (500W RMS) 8” MSPRO Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

MSPRO8_SDSK2 big
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Diamond Audio MSPRO8 with Sound Damping

1000W Peak (500W RMS) 8” MSPRO Series 2-way Coaxial Speakers + NVX SDSK2 Sound Damping

• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

Save 15% Off Package Deals at Checkout!
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found car based on your search
Fits your A5 Quattro
48
List price $388.73
-7% $359.99

In stock

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• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

Diamond Audio DMD65C with Sound Damping

200W Peak (100W RMS) 6.5" DMD Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

DMD65C_SDSK2 big
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Diamond Audio DMD65C with Sound Damping

200W Peak (100W RMS) 6.5" DMD Series 2-Way Component Speaker System + NVX SDSK2 Sound Damping

• 100 watts Peak Each, 50 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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found car based on your search
Fits your A5 Quattro
49
List price $218.73
$214.98

In stock

Only 3 Left!

Add to Cart

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Diamond Audio MSPRO65 with Sound Damping

MSPRO Series 6.5" Midrange Motorcycle Speakers 400W RMS, Pair + NVX SDSK2 Sound Damping

MSPRO65_SDSK2 big
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Diamond Audio MSPRO65 with Sound Damping

MSPRO Series 6.5" Midrange Motorcycle Speakers 400W RMS, Pair + NVX SDSK2 Sound Damping

• RMS: 400W / Peak: 800W
• Frequency Response: 110Hz - 10kHz
• Sensitivity: 97dB
• Manufactured to IP65 Marine Grade Compliant Specifications
• Shorting Ring Utilized In Motor Structure For Far-Field Performance

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49
$294.98

In stock

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• RMS: 400W / Peak: 800W
• Frequency Response: 110Hz - 10kHz
• Sensitivity: 97dB
• Manufactured to IP65 Marine Grade Compliant Specifications
• Shorting Ring Utilized In Motor Structure For Far-Field Performance

Diamond Audio DMD52 with Speaker Installation Kit

200W Peak (100W RMS) 6.5" DMD Series 2-Way Component Speaker System + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

DMD65C, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio DMD52 with Speaker Installation Kit

200W Peak (100W RMS) 6.5" DMD Series 2-Way Component Speaker System + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your A5 Quattro
  • Front Door
  • Rear Seat Side Panel
258
List price $287.70
-15% $243.52 /set

In stock

Only 3 Left!

Add to Cart

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Diamond Audio MSPRO8 with Speaker Installation Kit

Includes: (2) 8" Midrange Component Speaker, 2 Piece Speaker Baffles, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

MSPRO8, XBAF8, SDRLR1, SDSK2, BTK106 big
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Diamond Audio MSPRO8 with Speaker Installation Kit

Includes: (2) 8" Midrange Component Speaker, 2 Piece Speaker Baffles, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits your A5 Quattro
142
List price $452.70
-10% $405.80 /pair

In stock

Add to Cart

• 500 watts Peak Each, 250 watts RMS Each
• Tweeters
• Thermal molded waterproof paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

Diamond Audio DESK3 with Speaker Installation Kit

100W Peak (50W RMS) 3.5" Elite Series 3-Way Component Speaker System + Sound Dampening, Roller and Panel Removal Kit

DESK3, SDSK2, SDRLR1, BTK106 big
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Diamond Audio DESK3 with Speaker Installation Kit

100W Peak (50W RMS) 3.5" Elite Series 3-Way Component Speaker System + Sound Dampening, Roller and Panel Removal Kit

• 50 watts Peak Each, 25 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Save 15% Off Package Deals at Checkout!
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Install kits available for most vehicles

found car based on your search
Fits the following location in your A5 Quattro
  • Rear Deck Corner
140
List price $342.71
-7% $318.13 /set

In stock

Only 1 Left!

Add to Cart

• 50 watts Peak Each, 25 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Diamond Audio DMD693 with Speaker Installation Kit

200W Peak (100W RMS) 6.5" DMD Series 3-Way Coaxial Car Speakers + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

DMD653, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio DMD693 with Speaker Installation Kit

200W Peak (100W RMS) 6.5" DMD Series 3-Way Coaxial Car Speakers + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 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

found car based on your search
Fits multiple locations in your A5 Quattro
  • Front Door
  • Rear Seat Side Panel
257
List price $237.70
-22% $186.52 /pair

In stock

Only 1 Left!

Add to Cart

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Diamond Audio DES65C with Speaker Installation Kit

120W RMS 6.5" DES Series 2-Way Component Speaker System + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

DES65C, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio DES65C with Speaker Installation Kit

120W RMS 6.5" DES Series 2-Way Component Speaker System + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

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

found car based on your search
Fits multiple locations in your A5 Quattro
  • Front Door
  • Rear Seat Side Panel
257
List price $437.70
-8% $403.52 /set

In stock

Only 3 Left!

Add to Cart

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

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

found car based on your search
Fits multiple locations in your A5 Quattro
  • Front Door
  • Rear Seat Side Panel
260
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 H65S with Speaker Installation Kit

300W Peak (150W RMS) 6.5" HEX Diamante Italia Series 3-Way Component Speaker System 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

HX653DI, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio H65S with Speaker Installation Kit

300W Peak (150W RMS) 6.5" HEX Diamante Italia Series 3-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
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 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

found car based on your search
Fits multiple locations in your A5 Quattro
  • Front Door
  • Rear Seat Side Panel
257
$1,363.52

In stock

Only 1 Left!

Add to Cart

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 88.3 dB

Diamond Audio HXM65F2 with Speaker Installation Kit

500W Peak (250W RMS) 6.5" Motorsport Series 2-Way Coaxial Car Speakers + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

HXM65F2, XBAF65, SDSK2, SDRLR1, BTK106 big
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Diamond Audio HXM65F2 with Speaker Installation Kit

500W Peak (250W RMS) 6.5" Motorsport Series 2-Way Coaxial Car Speakers + 6.5" Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• 250 watts Peak Each, 125 watts RMS Each
• 1" Titanium Dome Tweeters
• UV-Coated Waterproof Injection PP cone material
• Impedance: 2 ohm
• Sensitivity:

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

found car based on your search
Fits your A5 Quattro
257
List price $557.70
-6% $523.52 /pair

In stock

Add to Cart

• 250 watts Peak Each, 125 watts RMS Each
• 1" Titanium Dome Tweeters
• UV-Coated Waterproof Injection PP cone material
• Impedance: 2 ohm
• Sensitivity:

Diamond Audio HX653DI with Sound Damping

300W Peak (150W RMS) 6.5" HEX Diamante Italia Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

HX653DI_SDSK2 big
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Diamond Audio HX653DI with Sound Damping

300W Peak (150W RMS) 6.5" HEX Diamante Italia Series 3-Way Component Speaker System + NVX SDSK2 Sound Damping

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 88.3 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 A5 Quattro
48
$1,334.98

In stock

Only 1 Left!

Add to Cart

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Composite Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 88.3 dB

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.
found car based on your search
Fits your A5 Quattro
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"

Diamond Audio DES652 with Sound Damping

240W Peak (120W RMS) 6.5" Elite Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

DES652_SDSK2 big
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Diamond Audio DES652 with Sound Damping

240W Peak (120W RMS) 6.5" Elite Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 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 A5 Quattro
48
$244.98

Available

Ships in 10-14 days

Add to Cart

• 120 watts Peak Each, 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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    Shop your 2009 A5 Quattro
    Why Use a Vehicle Fit Guide?
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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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