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2003 Audi A6

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Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

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

Universal-Fit Audio for 2003 Audi A6

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

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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.
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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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Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
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.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
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".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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DC Audio XL15 M4 D1 (M4XL15D1)

4400W Peak (2200W RMS) 15" XL Series M4 Version Dual 1-Ohm Car Subwoofer

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DC Audio XL15 M4 D1 (M4XL15D1)

4400W Peak (2200W RMS) 15" XL Series M4 Version Dual 1-Ohm Car Subwoofer

• Peak Power: 4400 watts
• RMS Power: 2200 watts
• Impedance: Dual 1 ohm
• Non-Pressed Paper cone
• Multi-layered Polymer Foam surround
• Mount depth: 10.25"
• Sensitivity: 89 dB

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DS18 EXL-X15.4D

2500W Peak (1250W RMS) 15" EXL-X Series Dual 4-ohm Car Subwoofer

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DS18 EXL-X15.4D

2500W Peak (1250W RMS) 15" EXL-X Series Dual 4-ohm Car Subwoofer

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Aluminum Cone
• Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 8"
• Sensitivity: 92 dB

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NVX - Worth the Envy - Direct to Consumer Car Audio
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DS18 ZXI15.2D

2000W Peak (1000W RMS) 15" ZXI Series Dual 4-ohm High Excursion Subwoofer

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DS18 ZXI15.2D

2000W Peak (1000W RMS) 15" ZXI Series Dual 4-ohm High Excursion Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper Cone
• Foam Surround
• Mount depth: 8.72"
• Sensitivity: 89 dB

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-15% $254.96

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MTX 3510-04S

300W RMS 10" 35 Series Single 4-ohm Shallow Car Subwoofer

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MTX 3510-04S

300W RMS 10" 35 Series Single 4-ohm Shallow Car Subwoofer

• RMS Power: 300 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Mount depth: 3.375"
• Sensitivity: 83.7 dB

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Hertz CS 250 S4

600W Peak (300W RMS) 10" Cento Series Single 4-ohm Shallow Mount Car Subwoofer

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Hertz CS 250 S4

600W Peak (300W RMS) 10" Cento Series Single 4-ohm Shallow Mount Car Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 4.53"
• Sensitivity: 84 dB

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List price $315.00
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Sundown Audio SA-18 v.2 D2 18" (SA18V2D2)

2500W Peak (1250W RMS) 18" SA Series Dual 2-ohm Car Subwoofer (SW-SAV218D2)

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Sundown Audio SA-18 v.2 D2 18" (SA18V2D2)

2500W Peak (1250W RMS) 18" SA Series Dual 2-ohm Car Subwoofer (SW-SAV218D2)

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper cone
• Foam surround
• Mount depth: 10.125"
• Sensitivity: 90.1 dB

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List price $599.99
-17% $499.99

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Earthquake Sound PRO-X158

1400W Peak (700W RMS) 15” Pro-X Series Subwoofer

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Earthquake Sound PRO-X158

1400W Peak (700W RMS) 15” Pro-X Series Subwoofer

• Peak Power: 1400 watts
• RMS Power: 700 watts
• Cloth Surround
• Impedance: Single 8 ohm
• Mount depth: 5.75"
• Sensitivity: 97.5 dB

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MB Quart RW1-304

2000W Peak (1000W RMS) 12" Reference Series Dual 4-ohm Car Subwoofer

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MB Quart RW1-304

2000W Peak (1000W RMS) 12" Reference Series Dual 4-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Non-Pressed Paper Cone
• Treated Double Stitched Foam Surround
• Mount depth: 7.32"
• Sensitivity: 85.3 dB

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List price $379.99
-11% $339.99

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Cerwin Vega SPCL182

3200W Peak (1600W RMS) 18" Stroker Pro Classic Series Single 2-ohm Subwoofer

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Cerwin Vega SPCL182

3200W Peak (1600W RMS) 18" Stroker Pro Classic Series Single 2-ohm Subwoofer

• Peak Power: 3200 watts
• RMS Power: 1600 watts
• Impedance: Single 2 ohm
• Treated Paper cone
• Treated Cloth surround
• Mount depth: 9.4"
• Sensitivity: 95 dB

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DS18 EXL-X15.2D

2500W Peak (1250W RMS) 15" EXL-X Series Dual 2-ohm Car Subwoofer

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DS18 EXL-X15.2D

2500W Peak (1250W RMS) 15" EXL-X Series Dual 2-ohm Car Subwoofer

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Non-Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 8"
• Sensitivity: 92 dB

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Cerwin-Vega VMAX15D2

3000W Peak (1500W RMS) 15” VMAXX Series Dual 2-ohm Subwoofer

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Cerwin-Vega VMAX15D2

3000W Peak (1500W RMS) 15” VMAXX Series Dual 2-ohm Subwoofer

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Impedance: Dual 2 ohm
• Treated Semi-Pressed Pulped Cone
• Treated Foam Surround
• Mount depth: 7.48"
• Sensitivity: 87.6 dB

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American Bass HD 10" (HD-1211)

4000W Peak (2000W RMS) 12" HD Series Dual 1-ohm Subwoofer

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American Bass HD 10" (HD-1211)

4000W Peak (2000W RMS) 12" HD Series Dual 1-ohm Subwoofer

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 1 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper Cone
• Oversized 1.4" 3-layer Foam Surround
• Mount depth: 8.38"
• Sensitivity: 86.5 dB

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Earthquake Sound PRO-X188

1600W Peak (800W RMS) 18" PRO-X Series Single 8-ohm Car and PA Subwoofer

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Earthquake Sound PRO-X188

1600W Peak (800W RMS) 18" PRO-X Series Single 8-ohm Car and PA Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Single 8 ohm
• Thin Pressed Paper Cone
• UV Treated Cloth Surround
• Mount depth: 7.67"
• Sensitivity: 98 dB

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• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Single 8 ohm
• Thin Pressed Paper Cone
• UV Treated Cloth Surround
• Mount depth: 7.67"
• Sensitivity: 98 dB

DS18 Hooligan X 15" (HOOL-X15.2DSPL)

6000W Peak (4000W RMS) 15" Hooligan Series Dual 2-ohm Car Subwoofer

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DS18 Hooligan X 15" (HOOL-X15.2DSPL)

6000W Peak (4000W RMS) 15" Hooligan Series Dual 2-ohm Car Subwoofer

• Peak Power: 6000 watts
• RMS Power: 4000 watts
• Non-Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 11.18"
• Sensitivity: 88.5 dB

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MTX 5512-22

800W Peak (400W RMS) 12" 55 Series Dual 2-ohm Car Subwoofer

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MTX 5512-22

800W Peak (400W RMS) 12" 55 Series Dual 2-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 6.188"
• Sensitivity: 85.1 dB

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DC Audio Level 4 18M2D2 (M2LV418D2)

2800W Peak (1400W RMS) 18" Level 4 Series M2 Version Dual 2-Ohm Car Subwoofer

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DC Audio Level 4 18M2D2 (M2LV418D2)

2800W Peak (1400W RMS) 18" Level 4 Series M2 Version Dual 2-Ohm Car Subwoofer

• Peak Power: 2800 watts
• RMS Power: 1400 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper cone
• Multi-layered Polymer Foam surround
• Mount depth: 9.5"
• Sensitivity: 88.2 dB

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Cerwin Vega V152DV2

1500W Peak (550W RMS) 15" Vega Series Dual 2-ohm Subwoofer

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Cerwin Vega V152DV2

1500W Peak (550W RMS) 15" Vega Series Dual 2-ohm Subwoofer

• Peak Power: 1500 watts
• RMS Power: 550 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 7.28"
• Sensitivity: 88.5 dB

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DC Audio NEO 18 D1 (NEO18D1)

4400W Peak (2200W RMS) 18" NEO Series Dual 1-ohm Tight Gapped Car Subwoofer

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DC Audio NEO 18 D1 (NEO18D1)

4400W Peak (2200W RMS) 18" NEO Series Dual 1-ohm Tight Gapped Car Subwoofer

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 1 ohm
• Paper cone
• Multi-layered Polymer Foam surround
• Mount depth: 11"

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DC Audio Level 3 18M3D4 (M3LV318D4)

1800W Peak (900W RMS) 18" Level 3 Series M3 Version Dual 4-ohm Car Subwoofer

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DC Audio Level 3 18M3D4 (M3LV318D4)

1800W Peak (900W RMS) 18" Level 3 Series M3 Version Dual 4-ohm Car Subwoofer

• Peak Power: 1800 watts
• RMS Power: 900 watts
• Impedance: Dual 4 ohm
• Non-Pressed Paper cone
• Multi-layered Polymer Foam surround
• Mount depth: 9.5"
• Sensitivity: 86.48 dB

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Universal Icon Universal – fits most vehicles.

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Massive Audio GTX124H

1600W Peak (800W RMS) 12" GTX Series Dual 4-ohm Subwoofer

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Massive Audio GTX124H

1600W Peak (800W RMS) 12" GTX Series Dual 4-ohm Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• Non-Pressed Paper cone
• Foam surround
• Mount depth: 6.34"
• Sensitivity: 88 dB

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