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2004 Audi A4

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Overview Upgrade your Stereo 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 2004 Audi A4

Find speakers to upgrade your sound and fit in the factory speaker location for your A4.  After you choose your speakers, we'll help you find speaker adapters, speaker harnesses and other accessories for installation.

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Shop All Speaker Locations in the Vehicle

See all speakers that fit, regardless of location.

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Rear Door Panel Speakers

Rear Door Panel Speakers

Speakers for your rear door panels

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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.
Power Series (21)
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Infinity Primus 603CF (PR603CF)

360W Peak (120W RMS) 6.5" Primus Series 2 Way 3-ohm Component Speaker System

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Infinity Primus 603CF (PR603CF)

360W Peak (120W RMS) 6.5" Primus Series 2 Way 3-ohm Component Speaker System

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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Memphis MS62V

300W Peak (150W RMS) 6.5" M Series 2-way 4-ohm Convertible Coaxial Car Speakers

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Memphis MS62V

300W Peak (150W RMS) 6.5" M Series 2-way 4-ohm Convertible Coaxial Car Speakers

• 150 watts Peak Each, 75 watts RMS Each
• Aluminum Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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Cerwin-Vega CVPX65 (Sold Individually)

120W Peak (60W RMS) 6.5" CVPX Series 2-Way Pro Audio Coaxial 4-ohm Speaker

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Cerwin-Vega CVPX65 (Sold Individually)

120W Peak (60W RMS) 6.5" CVPX Series 2-Way Pro Audio Coaxial 4-ohm Speaker

• 120 watts Peak, 60 watts RMS
• Polymide Horn loaded tweeter
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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PRV Audio 6MR200A-4

400W Peak (200W RMS) 6.5" Alto Series Pro Audio Midrange 4-ohm Car Speaker (Sold Individually)

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PRV Audio 6MR200A-4

400W Peak (200W RMS) 6.5" Alto Series Pro Audio Midrange 4-ohm Car Speaker (Sold Individually)

• 400 watts Peak Each, 200 watts RMS Each
• Kevlar-Enhanced Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Cerwin-Vega CVP65 (Sold Individually)

300W Peak (150W RMS) 6.5" CVPRO Series Pro Full Range 4-ohm Speaker

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Cerwin-Vega CVP65 (Sold Individually)

300W Peak (150W RMS) 6.5" CVPRO Series Pro Full Range 4-ohm Speaker

• 300 watts Peak, 150 watts RMS
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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Cerwin-Vega H675

540W Peak (180W RMS) 6.75" HED Series 2 Way Coaxial Speakers

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Cerwin-Vega H675

540W Peak (180W RMS) 6.75" HED Series 2 Way Coaxial Speakers

• 270 watts Peak Each, 90 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• UV-Treated Polypropylene cone material

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$137.99 /pair

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DS18 6PRO300MB-4 (Sold Individually)

300W Peak (150W RMS) 6.5" 6PRO Series Pro-Audio Mid-bass 4-ohm Speaker

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DS18 6PRO300MB-4 (Sold Individually)

300W Peak (150W RMS) 6.5" 6PRO Series Pro-Audio Mid-bass 4-ohm Speaker

• 300 watts Peak Each, 150 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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Diamond Audio DMDX25

60W Peak (20W RMS) 2.5" DMDX Series Full Range Car Speakers

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Diamond Audio DMDX25

60W Peak (20W RMS) 2.5" DMDX Series Full Range Car Speakers

• 30 watts Peak Each, 10 watts RMS Each
• Impedance: 4 ohm
• Sensitivity: 85 dB

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PRV Audio RS65-PRO

400W Peak (200W RMS) 6.5" RS Series Pro Audio Full Range 4-ohm Car Speakers

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PRV Audio RS65-PRO

400W Peak (200W RMS) 6.5" RS Series Pro Audio Full Range 4-ohm Car Speakers

• 200 watts Peak Each, 100 watts RMS Each
• High-quality ultra lightweight cone
• Impedance: 4 ohm
• Sensitivity: 94 dB

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List price $87.39
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DS18 PRO-X6.4BMSL (Sold Individually)

400W Peak (200W RMS) 6.5” PRO-X Series Pro Audio Mid-Range 4-ohm Bullet Loudspeaker

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DS18 PRO-X6.4BMSL (Sold Individually)

400W Peak (200W RMS) 6.5” PRO-X Series Pro Audio Mid-Range 4-ohm Bullet Loudspeaker

• 400 watts Peak Each, 200 watts RMS Each
• Red Aluminum Bullet tweeters
• Non-Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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JBL Club 64CSQ (JBLSPKCB64CSQ)

570W Peak (190W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

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JBL Club 64CSQ (JBLSPKCB64CSQ)

570W Peak (190W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

• 285 watts Peak Each, 95 watts RMS Each
• 3/4" Silk Edge Driven Dome tweeters
• Carbon Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $299.95
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MB Quart DK2-116

240W Peak (120W RMS) 6.5" Discus Series 2-way 4-ohm Coaxial Car Speakers

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MB Quart DK2-116

240W Peak (120W RMS) 6.5" Discus Series 2-way 4-ohm Coaxial Car Speakers

• 120 watts Peak Each, 60 watts RMS Each
• Aluminum Inverted Dome tweeters
• Lightweight Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Sundown Audio ECX 6.5 (ECX6.5)

50W RMS 6.5" ECX Series 2 Way Coaxial Pro Audio 4-ohm Speaker (S-ECX6.5)

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Sundown Audio ECX 6.5 (ECX6.5)

50W RMS 6.5" ECX Series 2 Way Coaxial Pro Audio 4-ohm Speaker (S-ECX6.5)

• 50 watts RMS Each
• Horn Tweeters
• Impedance: 4 ohm
• Sensitivity: 94 dB

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Hertz CPX 165

570W Peak (190W RMS) 6.5" Cento Series 2-Way Coaxial 4-ohm Car Speakers

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Hertz CPX 165

570W Peak (190W RMS) 6.5" Cento Series 2-Way Coaxial 4-ohm Car Speakers

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

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List price $405.00
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PRV Audio 6CX380-4 SLIM (Sold Individually)

760W Peak (380W RMS) 6.5" 2 Way Coaxial Pro Audio 4-ohm Shallow Car Speaker

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PRV Audio 6CX380-4 SLIM (Sold Individually)

760W Peak (380W RMS) 6.5" 2 Way Coaxial Pro Audio 4-ohm Shallow Car Speaker

• 760 watts Peak, 380 watts RMS
• 1" Phenolic Horn tweeter
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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Diamond Audio MSPRO65

800W Peak (400W RMS) 6.5" MSPRO Series Pro Audio Midrange 4-ohm Speakers

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Diamond Audio MSPRO65

800W Peak (400W RMS) 6.5" MSPRO Series Pro Audio Midrange 4-ohm Speakers

• 400 watts Peak Each, 200 watts RMS Each
• Water-Resistant Paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

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Alpine BRV-S65

300W Peak (100W RMS) 6.5" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

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Alpine BRV-S65

300W Peak (100W RMS) 6.5" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

• 150 watts Peak Each, 50 watts RMS Each
• 1" Polyester cloth Dome Tweeters
• Polypropylene-Mica cone material
• BassRev tuning via Alpine OPTIM8
• Impedance: 4 ohm
• Sensitivity: 84 dB

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List price $360.00
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MTX RTX6 (Sold Individually)

125W RMS 6.5" Road Thunder Extreme Series Pro Audio Mid-bass 4-ohm Speaker

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MTX RTX6 (Sold Individually)

125W RMS 6.5" Road Thunder Extreme Series Pro Audio Mid-bass 4-ohm Speaker

• 125 watts RMS Each
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97.2 dB

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Deaf Bonce Avatar MBR-61LE

280W Peak (140W RMS) 6.5" Buran Series Midrange 4-ohm Car Speakers

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Deaf Bonce Avatar MBR-61LE

280W Peak (140W RMS) 6.5" Buran Series Midrange 4-ohm Car Speakers

• 140 watts Peak Each, 70 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93.8 dB

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Hertz SX 690 H NEO

520W Peak (260W RMS) 6x9" SPL Show Series 3-Way Coaxial 4-ohm Car and Motorcycle Speakers

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Hertz SX 690 H NEO

520W Peak (260W RMS) 6x9" SPL Show Series 3-Way Coaxial 4-ohm Car and Motorcycle Speakers

• 260 watts Peak Each, 130 watts RMS Each
• 1.4" Tetolon Dome tweeter
• 1" Tetolon Dome super tweeter
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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List price $650.00
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    Q: Can I upgrade or change the Speakers in 2004 Audi A4?

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

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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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