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2001 Audi A4 Quattro

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The best Lower Front Door Speakers for 2001 A4 Quattro

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Lower Front Door for 2001 Audi A4 Quattro

Shop and compare by low prices and top features on Lower Front Door Speakers that fit your Audi A4 Quattro. After you add to cart, we'll also make sure you get an affordable car speakers install easily with speaker adapters, speaker harnesses and other accessories like sound damping and panel tools to make installation a breeze.

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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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Cerwin-Vega H653

540W Peak (180W RMS) 6.5" HED Series 3 Way Coaxial 4-ohm Speakers

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Cerwin-Vega H653

540W Peak (180W RMS) 6.5" HED Series 3 Way Coaxial 4-ohm Speakers

• 270 watts Peak Each, 90 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $131.99
-17% $109.99 /pair

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Infinity Kappa 603CF (INFSPKKA603CFAM)

660W Peak (220W RMS) 6.5" Kappa Series 2 Way 3-ohm Component Speaker System

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Infinity Kappa 603CF (INFSPKKA603CFAM)

660W Peak (220W RMS) 6.5" Kappa Series 2 Way 3-ohm Component Speaker System

• 330 watts Peak Each, 110 watts RMS Each
• 3/4" Silk Edge Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $499.95
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-28% $359.95 /set

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Alpine R2-S65

600W Peak (200W RMS) 6.5" R-Series Hi-Res 2-Way Coaxial 4-ohm Car Speakers

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Alpine R2-S65

600W Peak (200W RMS) 6.5" R-Series Hi-Res 2-Way Coaxial 4-ohm Car Speakers

• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio-certified
• 1" Magnesium Hard Dome tweeters
• Reinforced Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $400.00
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-34% $263.95 /pair

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Alpine R2-S65C (Like New (Open Box))

600W Peak (200W RMS) 6.5" Next Generation R-Series 2-way 4-ohm Hi-Res Component Speaker System

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Alpine R2-S65C (Like New (Open Box))

600W Peak (200W RMS) 6.5" Next Generation R-Series 2-way 4-ohm Hi-Res Component Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio certified
• 1" Magnesium Hard Dome swivel-mount tweeters with threaded removable housing
• Reinforced Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $480.00
-29% $339.96 /set

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• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio certified
• 1" Magnesium Hard Dome swivel-mount tweeters with threaded removable housing
• Reinforced Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

NVX XQS65KIT Version 2 (XQS65KITv2) (Like New (Open Box))

600W Peak (300W RMS) 6.5" X-Series 2-Way Component Speaker System with Real Carbon Fiber Cones and 30mm Silk Dome Tweeters

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NVX XQS65KIT Version 2 (XQS65KITv2) (Like New (Open Box))

600W Peak (300W RMS) 6.5" X-Series 2-Way Component Speaker System with Real Carbon Fiber Cones and 30mm Silk Dome Tweeters

• 300 watts Peak Each, 150 watts RMS Each
• 1-1/8" Silk Dome Tweeters
• Lightweight Real Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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List price $499.99
-32% $339.99 /set

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• 300 watts Peak Each, 150 watts RMS Each
• 1-1/8" Silk Dome Tweeters
• Lightweight Real Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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Rockford Fosgate Prime R165-S

160W Peak (80W RMS) 6.5" Prime Series 2 Way Component 4-ohm Speaker System

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Rockford Fosgate Prime R165-S

160W Peak (80W RMS) 6.5" Prime Series 2 Way Component 4-ohm Speaker System

• 80 watts Peak Each, 40 watts RMS Each
• 1/2" Mylar Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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$79.99 /set

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Alpine R2-S65C

600W Peak (200W RMS) 6.5" Next Generation R-Series 2-way 4-ohm Hi-Res Component Speaker System

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Alpine R2-S65C

600W Peak (200W RMS) 6.5" Next Generation R-Series 2-way 4-ohm Hi-Res Component Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio certified
• 1" Magnesium Hard Dome swivel-mount tweeters with threaded removable housing
• Reinforced Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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List price $480.00
Save $160.05
-33% $319.95 /set

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Rockford Fosgate Power T1 T1650-S

320W Peak (160W RMS) 6.5" Power Series 2 Way Component 4-ohm Speaker System

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Rockford Fosgate Power T1 T1650-S

320W Peak (160W RMS) 6.5" Power Series 2 Way Component 4-ohm Speaker System

• 160 watts Peak Each, 80 watts RMS Each
• 1" Treated Fabric Dome Tweeters
• Carbon Fiber Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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$379.99

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Hertz K 165

300W Peak (75W RMS) 6.5" Uno Series 2-way 4-ohm Component Speaker System

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Hertz K 165

300W Peak (75W RMS) 6.5" Uno Series 2-way 4-ohm Component Speaker System

• 300 watts Peak Each, 75 watts RMS Each
• 1" PEI (Polyetherimide) Dome tweeters with neodymium magnets
• Water-repellent pressed paper cone material
• Impedance: 4 ohm
• Sensitivity: 93.5 dB

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List price $150.00
-33% $99.99 /set

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JL Audio C3-650

150W RMS 6.5" C3 Series 2-Way 4-ohm Component Speaker System

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JL Audio C3-650

150W RMS 6.5" C3 Series 2-Way 4-ohm Component Speaker System

• 75 watts RMS Each
• 1" Silk Soft Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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$529.99 /set

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DS18 PRO-HY6.4B (Sold Individually)

450W Peak (225W RMS) 6.5” PRO Series Hybrid Coaxial Midrange 4-ohm Motorcycle and Powersports Loudspeaker

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DS18 PRO-HY6.4B (Sold Individually)

450W Peak (225W RMS) 6.5” PRO Series Hybrid Coaxial Midrange 4-ohm Motorcycle and Powersports Loudspeaker

• 450 watts Peak, 225 watts RMS
• 3" Titanium Horn Driver
• Water-Resistant Paper (IP55) cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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$113.95

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Pioneer TS-A1681F

700W Peak (160W RMS) 6.5" A-Series 4-Way Coaxial 4-ohm Speakers

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Pioneer TS-A1681F

700W Peak (160W RMS) 6.5" A-Series 4-Way Coaxial 4-ohm Speakers

• 350 watts Peak Each, 80 watts RMS Each
• 7/16" PET Dome Tweeters
• Carbon and Mica Reinforced Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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List price $130.00
-15% $109.99 /pair

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Rockford Fosgate Prime R165-S (Like New (Open Box))

160W Peak (80W RMS) 6.5" Prime Series 2 Way Component 4-ohm Speaker System

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Rockford Fosgate Prime R165-S (Like New (Open Box))

160W Peak (80W RMS) 6.5" Prime Series 2 Way Component 4-ohm Speaker System

• 80 watts Peak Each, 40 watts RMS Each
• 1/2" Mylar Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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Install kits available for most vehicles

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List price $79.99
-15% $67.99 /set

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• 80 watts Peak Each, 40 watts RMS Each
• 1/2" Mylar Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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Rockford Fosgate Power T1 T1650

300W Peak (150W RMS) 6.5" Power Series 2 Way Coaxial 4-ohm Speakers

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Rockford Fosgate Power T1 T1650

300W Peak (150W RMS) 6.5" Power Series 2 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Carbon Fiber Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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$219.99 /pair

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MB Quart FKB116

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

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MB Quart FKB116

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

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

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List price $79.99
-56% $34.99 /pair

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JBL Stage3 607C (STAGE3607CAM)

300W Peak (100W RMS) 6.5" Stage3 Series 2-way Component 3-ohm Speakers

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JBL Stage3 607C (STAGE3607CAM)

300W Peak (100W RMS) 6.5" Stage3 Series 2-way Component 3-ohm Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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List price $179.95
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Available Offers (2) for JBL Stage3 607C (STAGE3607CAM)
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List price $179.95
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Polk Audio DB6502 (DB 6502)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

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Polk Audio DB6502 (DB 6502)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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List price $209.99
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Hertz SX 165 NEO

400W Peak (200W RMS) 6.5" SPL Show Series 2-way 4-ohm SPL Coaxial Car Speakers

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Hertz SX 165 NEO

400W Peak (200W RMS) 6.5" SPL Show Series 2-way 4-ohm SPL Coaxial Car Speakers

• 200 watts Peak Each, 100 watts RMS Each
• 1.4" PEI (Polyetherimide) Dome tweeters with N38H neodymium magnets
• Nature-proof high-stiffness Water-repellent Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96.5 dB

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List price $480.00
-6% $449.99 /pair

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DS18 PRO-ZT6 (Sold Individually)

450W Peak (225W RMS) 6.5” PRO Series Hybrid Coaxial Midrange 4-ohm Motorcycle and Powersports Loudspeaker

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DS18 PRO-ZT6 (Sold Individually)

450W Peak (225W RMS) 6.5” PRO Series Hybrid Coaxial Midrange 4-ohm Motorcycle and Powersports Loudspeaker

• 450 watts Peak, 225 watts RMS
• Aluminum Alloy Bullet Tweeter
• Water-Resistant Paper cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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Kicker KSS67 (51KSS6704)

500W Peak (250W RMS) 6.75" KS Series 2 Way Component 4-ohm Speaker System

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Kicker KSS67 (51KSS6704)

500W Peak (250W RMS) 6.75" KS Series 2 Way Component 4-ohm Speaker System

• 250 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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List price $279.99
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    Q: Can I upgrade or change the Lower Front Door Speakers in 2001 Audi A4 Quattro?

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

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