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2001 DeVille
Speakers guaranteed to fit your vehicle.
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Products in these categories contain items that carry a guarantee to fit your Cadillac DeVille (change vehicle)
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All Alpine Car Speakers

Discover Alpine's entire lineup of high-performance car speakers.

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Alpine Speaker Installation & Accessories

Get the best from your Alpine speakers with our installation accessories.

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Alpine Vehicle Specific Speaker Kits

Tailor-made speaker kits by Alpine for your vehicle.

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Alpine 6.5" Speakers

Alpine's 6.5” speakers are engineered for balanced, high-quality sound.

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Alpine 6.5" Component Speakers

Alpine's 6.5” speakers deliver detailed and dynamic audio for an unmatched experience.

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Alpine 6x9" Speakers

Enjoy powerful, expansive sound with Alpine's high-performing 6x9” speakers.

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Alpine 6x9" Component Speakers

Alpine's large speakers for expansive sound in your vehicle.

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Alpine 5.25" Speakers

Alpine's 5.25” speakers balance size and performance for superior audio.

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Alpine 8" Speakers

Compact yet powerful, Alpine's 8” speakers deliver quality audio.

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Other Alpine Car Speakers

Explore Alpine's variety of speakers for every car audio need.

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Alpine Tweeters

Alpine tweeters enhance high frequencies for crisp, clear audio.

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Alpine Speaker Packages & Bundles

Speaker packages and bundles for a complete Alpine audio upgrade.

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Alpine Marine Speakers

Weather-resistant Alpine speakers designed for the marine environment.

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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.
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Alpine HDZ-653S

600W Peak (200W RMS) 6.5” Status Series Hi-Res 3-Way Component 4-ohm Shallow Speaker System

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Alpine HDZ-653S

600W Peak (200W RMS) 6.5” Status Series Hi-Res 3-Way Component 4-ohm Shallow Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• Hi-Res Audio Certified
• 1" Carbon Composite Cone Tweeters
• Slim-fit shallow tweeter construction
• Carbon Composite cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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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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