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1985 4000
Speakers guaranteed to fit your vehicle.
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Products in these categories contain items that carry a guarantee to fit your Audi 4000 (change vehicle)
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All Infinity Car Speakers

For consistent, high-quality sound, choose Infinity All Car Speakers.

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Infinity Speaker Installation & Accessories

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Infinity Vehicle Specific Speaker Kits

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Infinity 6.5" Speakers

Infinity 6.5" Speakers feature advanced technology for crystal-clear, dynamic sound.

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Infinity 6.5" Component Speakers

Infinity 6.5" Component Speakers provide detailed and dynamic sound for an immersive audio experience.

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Infinity 6x9" Speakers

Enjoy expansive audio with deep bass from Infinity's 6x9" Speakers.

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Infinity 6x9" Component Speakers

Infinity's 6x9" Component Speakers offer expansive sound coverage and depth.

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Infinity 3.5" Speakers

Compact yet mighty, Infinity 3.5" Speakers deliver rich and clear sound.

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Infinity 4" Speakers

Infinity 4" Speakers offer a perfect blend of compact size and powerful sound.

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Infinity Midbass & Midrange Speakers

Midbass & Midrange Drivers from Infinity deliver unparalleled clarity and depth.

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Other Infinity Car Speakers

Infinity offers a range of Other Car Speakers to suit every audio need.

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Infinity Tweeters

Experience high-frequency clarity like never before with Infinity Tweeters.

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Infinity Speaker Packages & Bundles

Upgrade your audio with Infinity Car Speaker Packages & Bundles.

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Infinity Harley-Davidson Speakers

Specifically designed for riders, Infinity Harley-Davidson Speakers offer superior sound.

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Infinity Marine Speakers

Infinity Marine Speakers for Boats deliver exceptional sound in marine environments.

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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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Infinity REF-6532ex (REF6532EXAM) with REF697F (INFSPKRF697FUS)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 2-way 4-ohm Coaxial Car Speakers

REF6532EXAM_REF697F big
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Infinity REF-6532ex (REF6532EXAM) with REF697F (INFSPKRF697FUS)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 2-way 4-ohm Coaxial Car Speakers

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Save $30 on install kits for this speaker

found car based on your search
Fits multiple locations in your 4000
11
List price $299.95
-27% $219.94 /pair

In stock.

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF-6532ex + 9633IX (REF9633IXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 3-way 3-ohm Coaxial Car Speakers

REF6532EXAM_REF9633IXAM big
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Infinity REF-6532ex + 9633IX (REF9633IXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 3-way 3-ohm Coaxial Car Speakers

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 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 this speaker

found car based on your search
Fits multiple locations in your 4000
7
List price $329.95
-42% $189.94 /pair

Available

Ships in 10-14 days

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF-6532ex (REF6532EXAM) + REF-9632ix

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Max (200W RMS) 6x9" 2-Way Coaxial Car Speakers

REF6532EXAM_REF9632IXAM big
Go to item page Right Arrow Icon of Right Arrow

Infinity REF-6532ex (REF6532EXAM) + REF-9632ix

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Max (200W RMS) 6x9" 2-Way Coaxial Car Speakers

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

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

Save $30 on install kits for this speaker

found car based on your search
Fits multiple locations in your 4000
8
List price $299.95
-27% $219.94 /pair

Available

Ships in 10-14 days

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF-6532ex (REF6532EXAM) with REF-6532ex (REF6532EXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit Coaxial Car Speakers + 600W (200W RMS) 6x9" Reference Series 3-way 4-ohm

REF6532EXAM_REF697MF big
Go to item page Right Arrow Icon of Right Arrow

Infinity REF-6532ex (REF6532EXAM) with REF-6532ex (REF6532EXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit Coaxial Car Speakers + 600W (200W RMS) 6x9" Reference Series 3-way 4-ohm

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

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

Save $30 on install kits for this speaker

found car based on your search
Fits multiple locations in your 4000
8
List price $329.95
-24% $249.94 /pair

In stock.

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

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    All About

    Infinity Car Speakers
    Infinity car speakers are engineered from the ground up to deliver rich, full sound in the challenging environment of a car. Infinity has a high quality option in a wide variety of sizes, making it easy to find Infinity car speakers that fit your car. Infinity speakers, like the Kappa and Reference series, are available in component systems as well as coaxial speakers, enabling them to work well in virtually any environment.

    The Infinity Kappa series are a sure bet to impress even the most discerning audiophiles with crisply defined treble and bold, powerful sound. The Kappa speakers deliver fantastic sound quality and beautiful highs thanks to their high quality materials and construction, over sized cones and edge driven dome tweeters.

    Other options available from Infinity include the Reference and Reference X series speakers. The Reference speakers are a mix of classic coaxial speakers and component systems with multiple mounting options for your convenience. The Plus One cone design provides incredibly smooth mid-range sounds for each speaker while the edge driven textile dome tweeters produce crystal clear highs. The Reference X speakers were designed with a vented motor assembly to reduce heat buildup to allow the speakers to maintain a higher output level for a longer period of time.

    Infinity car speakers take advantage of the tremendous Infinity engineering for outstanding power handling, sound quality and speaker life. From 5" x 7" and 6" x 9" to 5.25" to 6.5" speaker configurations, we have every Infinity speaker to help you create the best sound system around at Sonic Electronix.
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    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
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    1992 Saab 9000

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