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1978 Cadillac DeVille

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Overview 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 1978 Cadillac DeVille

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

All car speakers

Shop All Speaker Locations in the Vehicle

See all speakers that fit, regardless of location.

Dash Corner

Dash Corner Speakers

Speakers for your dash corner

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Rear Deck Corner

Rear Deck Corner Speakers

Speakers for your corner rear deck

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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 REF407F (INFSPKRF407FUS)

210W Peak (75W RMS) 4" Reference Series 2-Way Coaxial 3-ohm Speakers

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Infinity REF407F (INFSPKRF407FUS)

210W Peak (75W RMS) 4" Reference Series 2-Way Coaxial 3-ohm Speakers

• 105 watts Peak Each, 35 watts RMS Each
• 1/2" Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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Install kits available for most vehicles

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Fits the following location in your DeVille
  • Dash Corner
List price $139.95
-21% $109.95 /pair

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Infinity Primus PR9610CS

600W Peak (200W RMS) 6x9" Primus Series 2-Way Component 2.7-ohm Speaker System

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Infinity Primus PR9610CS

600W Peak (200W RMS) 6x9" Primus Series 2-Way Component 2.7-ohm Speaker System

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 2.7 ohm
• Sensitivity: 89 dB

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3
List price $209.95
-43% $119.95 /set

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Infinity Reference 5032cfx (REF-5032CFXAM)

270W Peak (90W RMS) 5.25" Reference Series 2 Way Coaxial 3-ohm Speakers

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Infinity Reference 5032cfx (REF-5032CFXAM)

270W Peak (90W RMS) 5.25" Reference Series 2 Way Coaxial 3-ohm Speakers

• 135 watts Peak Each, 45 watts RMS Each
• Textile Edge Driven Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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Install kits available for most vehicles

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Fits the following location in your DeVille
  • Front Door
List price $130.00
-42% $74.99 /pair

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Infinity Reference 9632ix (REF-9632IX)

600W Peak (200W RMS) 6x9" Reference Series 2-Way Coaxial 3-ohm Car Speakers

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Infinity Reference 9632ix (REF-9632IX)

600W Peak (200W RMS) 6x9" Reference Series 2-Way Coaxial 3-ohm Car Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 1" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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2
List price $169.95
-18% $139.95 /pair

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Ships in 10-14 days

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Infinity REF697MF (INFSPKRF697MFUS)

600W Peak (200W RMS) 6x9" Reference Series 3-Way Coaxial 3-ohm Speakers

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Infinity REF697MF (INFSPKRF697MFUS)

600W Peak (200W RMS) 6x9" Reference Series 3-Way Coaxial 3-ohm Speakers

• 300 watts Peak Each, 100 watts RMS Each
• Dual 1" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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List price $199.95
-15% $169.95 /pair

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Infinity Primus PR5012IS (PR5012ISAM)

240W Peak (80W RMS) 5.25" Primus Series 2 Way Coaxial 2.7-ohm Speakers

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Infinity Primus PR5012IS (PR5012ISAM)

240W Peak (80W RMS) 5.25" Primus Series 2 Way Coaxial 2.7-ohm Speakers

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 2.7 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

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Fits the following location in your DeVille
  • Front Door
List price $119.95
-54% $54.95 /pair

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Lowest price in 30 days

Infinity Kappa 693M (INFSPKKA693MAM) with Sound Damping

720W Peak (240W RMS) Kappa Series 6x9” 3-Way Speakers + NVX SDSK2 Sound Damping

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Infinity Kappa 693M (INFSPKKA693MAM) with Sound Damping

720W Peak (240W RMS) Kappa Series 6x9” 3-Way Speakers + NVX SDSK2 Sound Damping

• 360 watts Peak Each, 120 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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53
List price $368.69
-31% $254.94

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• 360 watts Peak Each, 120 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

Infinity PR693M (INFSPKPR693M)

360W Peak (120W RMS) 6x9” Primus Series 3 Way Coaxial 3-ohm Speakers

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Infinity PR693M (INFSPKPR693M)

360W Peak (120W RMS) 6x9” Primus Series 3 Way Coaxial 3-ohm Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $179.95
-17% $149.96 /pair

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List price $179.95
-17% $149.96
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Infinity Kappa 503CF (INFSPKKA503CFAM) (Open Box, Great)

480W Peak (160W RMS) 5.25” Kappa Series 2 Way 3-ohm Component Speaker System

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Infinity Kappa 503CF (INFSPKKA503CFAM) (Open Box, Great)

480W Peak (160W RMS) 5.25” Kappa Series 2 Way 3-ohm Component Speaker System

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge Driven Dome uni-pivot and angled tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your DeVille
  • Front Door
List price $449.95
-38% $279.30 /set

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Infinity Reference 5030cx (REF5030CX) (Open Box, Great)

390W Max (130W RMS) 5.25" Reference Series 2 Way 3-ohm Component Speaker System

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Infinity Reference 5030cx (REF5030CX) (Open Box, Great)

390W Max (130W RMS) 5.25" Reference Series 2 Way 3-ohm Component Speaker System

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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Install kits available for most vehicles

found car based on your search
Fits the following location in your DeVille
  • Front Door
List price $249.95
-44% $139.99 /set

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Only 1 Left!

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Infinity Primus 603F (PR603F) with Sound Damping

300W Peak (100W RMS) 6.5” Primus Series 2-Way Coaxial Speakers with Sound Damping

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Infinity Primus 603F (PR603F) with Sound Damping

300W Peak (100W RMS) 6.5” Primus Series 2-Way Coaxial Speakers with Sound Damping

• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
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54
List price $128.69
-26% $94.94

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• 150 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Infinity Kappa 693C (INFSPKKA693CAM) (Open Box, Good)

870W Peak (290W RMS) 6x9" Kappa Series 2 Way Component 3-ohm Speaker System

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Infinity Kappa 693C (INFSPKKA693CAM) (Open Box, Good)

870W Peak (290W RMS) 6x9" Kappa Series 2 Way Component 3-ohm Speaker System

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Edge Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 94 dB

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Free or discounted install kits when available.

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List price $449.95
-7% $419.95 /set

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Infinity REF507CF with Sound Damping

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

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Infinity REF507CF with Sound Damping

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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47
List price $268.69
-13% $234.94

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• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity REF507CF with Installation Accessories

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

REF507CF_ACC_KIT big
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Infinity REF507CF with Installation Accessories

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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227
List price $322.66
-19% $260.51

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• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Lowest price in 30 days

Infinity Kappa 603CF (INFSPKKA603CFAM) - Open Box, Great

Kappa Series 6.5" Component Speaker System

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Infinity Kappa 603CF (INFSPKKA603CFAM) - Open Box, Great

Kappa Series 6.5" Component Speaker System

• Peak Power: 330W
• RMS Power: 110W
• edge-driven, silk dome tweeter
• Mounting Depth: 2-1/8"
• Plus One+ glass-fiber woofer cone

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Free or discounted install kits when available.

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6
List price $499.95
-39% $305.96

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Infinity Kappa 53XF (INFSPKKA53XFAM) with Installation Accessories

360W Peak (120W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

KAPPA53XF_ACC_KIT big
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Infinity Kappa 53XF (INFSPKKA53XFAM) with Installation Accessories

360W Peak (120W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers + 5.25" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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227
List price $322.66
-38% $200.51

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• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity KAPPA 693C with Installation Accessories

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

KAPPA693CF_ACC_KIT big
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Infinity KAPPA 693C with Installation Accessories

435W Peak (145W RMS) Kappa Series 6x9” Component Speaker System + 6x9" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
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265
List price $642.66
-31% $446.16

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Only 1 Left!

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• 435 watts Peak Each, 145 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Infinity Primus 603CF (PR603CF) with Sound Damping

360W Peak (120W RMS) 6.5" Primus Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

PR603CF_SDSK2 big
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Infinity Primus 603CF (PR603CF) with Sound Damping

360W Peak (120W RMS) 6.5" Primus Series 2-Way Component Speakers + NVX SDSK2 Sound Damping

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• 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.
Fits select models only.
Add details to confirm fitment.
48
List price $178.69
-19% $144.94

In stock

Add to Cart

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity Primus PR5012IS (PR5012ISAM) with Sound Damping

240W Peak (80W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

PR5012ISAM_SDSK2 big
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Infinity Primus PR5012IS (PR5012ISAM) with Sound Damping

240W Peak (80W RMS) 5.25" Primus Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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47
List price $138.69
-50% $69.94

In stock

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• 120 watts Peak Each, 40 watts RMS Each
• Textile Edge-driven Dome Tweeters
• Polypropylene cone material
• Impedance: 2.7
• Sensitivity: 88 dB

Infinity Primus 603CF (PR603CF) (2-Pairs, 4-Total)

720W Peak (240W RMS) 6.5" Primus Series 2-Way Component Speakers (2-Pairs)

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Infinity Primus 603CF (PR603CF) (2-Pairs, 4-Total)

720W Peak (240W RMS) 6.5" Primus Series 2-Way Component Speakers (2-Pairs)

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
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List price $319.90
-19% $259.90

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• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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    FAQ for Speakers in 1978 DeVille

    Q: Can I upgrade or change the Speakers in 1978 Cadillac DeVille?

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

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