Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

1978 Cadillac DeVille

Change vehicle | Remove vehicle

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Independance Day 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

Independance Day Sale

Independance Day Sale

Free Gear / Open-Box Deals / Huge Discounts up to 40% off Car / Marine / ATV Audio

Filters
Rockford Fosgate ✕
Clear Filters
Reset Done
Product Type
Price Range
Speaker Location
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.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Condition
Availability
filter-icon Filters & Sort

Rockford Fosgate Power T3652-S with Sound Damping

500W Peak (250W RMS) 6.5" T3 Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

T3652S_SDBSK2 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T3652-S with Sound Damping

500W Peak (250W RMS) 6.5" T3 Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 250 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters with neodymium motor
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 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.
55
List price $1318.73
$1,314.98

Available

Ships in 10-14 days

Add to Cart

• 250 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters with neodymium motor
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

Rockford Fosgate T4652-S (T-4652-S) with Sound Damping

600W Peak (300W RMS) 6.5" Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

T4652S_SDBSK2 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate T4652-S (T-4652-S) with Sound Damping

600W Peak (300W RMS) 6.5" Power Series 2-way 4-ohm Component Speaker System + NVX SDBSK2 Premium Sound Damping

• 300 watts Peak Each, 150 watts RMS Each
• 1" Liquid Crystal Polymer (LCP) Dome tweeters
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 89 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 $1418.73
$1,414.98

Available

Ships in 10-14 days

Add to Cart

• 300 watts Peak Each, 150 watts RMS Each
• 1" Liquid Crystal Polymer (LCP) Dome tweeters
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Rockford Fosgate Punch P142 (Open Box, Great)

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers

P142 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch P142 (Open Box, Great)

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Injection-molded mineral-filled polypropylene cone material with VAST technology
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your DeVille
  • Dash Corner
11
List price $109.99
-15% $93.49 /pair

In stock

Add to Cart

Rockford Fosgate P1650 - Open Box, Great

220W Max (110W RMS) 6.5" 2-Way P1 Punch Series Coaxial Speakers w/ PEI Dome Tweeter

P1650 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate P1650 - Open Box, Great

220W Max (110W RMS) 6.5" 2-Way P1 Punch Series Coaxial Speakers w/ PEI Dome Tweeter

• Peak Power: 220W per set
• RMS Power: 110W per set
• 3/4" PEI Dome Tweeter
• Mounting Depth: 2-1/4"
• Injection-Molded Carbon Fiber Filled Polypropylene Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 88dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
61
List price $109.99
-15% $93.49 /pair

In stock

Add to Cart

Rockford Fosgate Power T1650 (Open Box, Great)

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

T1650 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T1650 (Open Box, Great)

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

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome tweeters
• Injection-molded Carbon Fiber-filled Polypropylene cone material with Vertical Attach Surround Technique (VAST)
• Impedance: 4 ohm
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
10
List price $219.99
-15% $186.99 /pair

In stock

Add to Cart

Rockford Fosgate T1650-S (Open Box, Great)

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

T1650-S big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate T1650-S (Open Box, Great)

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

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

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
1
List price $379.99
-15% $322.99

In stock

Add to Cart

Rockford Fosgate Power T1693 (Open Box, Great)

400W Peak (200W RMS) 6x9" Power Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters

T1693 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T1693 (Open Box, Great)

400W Peak (200W RMS) 6x9" Power Series 3-way 4-ohm Coaxial Car Speakers with Dual Tweeters

• 200 watts Peak Each, 100 watts RMS Each
• Dual 1" Aluminum Dome tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
32
List price $299.99
-15% $254.99 /pair

In stock

Add to Cart

Rockford Fosgate Prime R1525X2 (Open Box, Great)

160W Peak (80W RMS) 5.25" PRIME Series 2-way 4-ohm Coaxial Car Speakers

R1525X2 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Prime R1525X2 (Open Box, Great)

160W Peak (80W RMS) 5.25" PRIME Series 2-way 4-ohm Coaxial Car Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 1/2" Silk Flush-mounted Dome tweeters
• Vacuum Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your DeVille
  • Front Door
17
List price $79.99
-15% $67.99 /pair

In stock

Add to Cart

Rockford Fosgate Power T152 (Open Box, Great)

240W Peak (120W RMS) 5.25" Power Series 2-way 4-ohm Coaxial Car Speakers

T152 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T152 (Open Box, Great)

240W Peak (120W RMS) 5.25" Power Series 2-way 4-ohm Coaxial Car Speakers

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome offset cantilever coaxial mounted tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 86.5 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your DeVille
  • Front Door
22
List price $219.99
-15% $186.99 /pair

In stock

Add to Cart

Rockford Fosgate Prime R169X2 (Open Box, Great)

260W Peak (130W RMS) 6x9" Prime Series 2-way 4-ohm Coaxial Car Speakers

R169X2 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Prime R169X2 (Open Box, Great)

260W Peak (130W RMS) 6x9" Prime Series 2-way 4-ohm Coaxial Car Speakers

• 130 watts Peak Each, 65 watts RMS Each
• 1/2" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
49
List price $99.99
-15% $84.99 /pair

In stock

Add to Cart

Rockford Fosgate Power T1692 - Open Box, Great

400W Peak (200W RMS) 6x9" 2-Way Power Series Coaxial Speakers

T1692 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T1692 - Open Box, Great

400W Peak (200W RMS) 6x9" 2-Way Power Series Coaxial Speakers

• Peak Power: 400W each
• RMS Power: 100W each
• 1" Aluminium Dome Tweeter
• Mounting Depth: 3-1/2" • Carbon Fiber and Polypropylene injection Molded Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 90dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
23
List price $289.99
-15% $246.49 /pair

In stock

Add to Cart

Rockford Fosgate Punch P1692 (Open Box, Great)

300W Peak (150W RMS) 6x9" Punch Series 2-way 4-ohm Coaxial Car Speakers

P1692 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch P1692 (Open Box, Great)

300W Peak (150W RMS) 6x9" Punch Series 2-way 4-ohm Coaxial Car Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome Tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
82
List price $109.99
-15% $93.49 /pair

In stock

Add to Cart

Rockford Fosgate Prime R169X3 (Open Box, Great)

260W Peak (130W RMS) 6x9" Prime Series 3-way 4-ohm Coaxial Car Speakers with Silk Dome Midrange and Tweeters

R169X3 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Prime R169X3 (Open Box, Great)

260W Peak (130W RMS) 6x9" Prime Series 3-way 4-ohm Coaxial Car Speakers with Silk Dome Midrange and Tweeters

• 130 watts Peak Each, 65 watts RMS Each
• 1/2" pole-mounted Silk Dome tweeters
• Silk dome pole-mounted Piezo midrange
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
38
List price $109.99
-15% $93.49 /pair

In stock

Add to Cart

Rockford Fosgate T4652-S (T-4652-S) (Open Box, Great)

600W Peak (300W RMS) 6.5" Power Series 2-way 4-ohm Component Speaker System

T4652-S big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate T4652-S (T-4652-S) (Open Box, Great)

600W Peak (300W RMS) 6.5" Power Series 2-way 4-ohm Component Speaker System

• 300 watts Peak Each, 150 watts RMS Each
• 1" Liquid Crystal Polymer (LCP) Dome tweeters
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
List price $1399.99
-15% $1,189.99

Available

Add to Cart

Rockford Fosgate Power T3652-S (Open Box, Great)

500W Peak (250W RMS) 6.5" T3 Power Series 2-way 4-ohm Component Speaker System

T3652-S big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Power T3652-S (Open Box, Great)

500W Peak (250W RMS) 6.5" T3 Power Series 2-way 4-ohm Component Speaker System

• 250 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters with neodymium motor
• Liquid Crystal Polymer (LCP) cone material
• Impedance: 4 ohm
• Sensitivity: 87.5 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
7
List price $1299.99
-15% $1,104.99 /set

Available

Add to Cart

Rockford Fosgate Prime R169X3

260W Peak (130W RMS) 6x9" Prime Series 3 Way Coaxial 4-ohm Speakers

R169X3 big
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Prime R169X3

260W Peak (130W RMS) 6x9" Prime Series 3 Way Coaxial 4-ohm Speakers

• 130 watts Peak Each, 65 watts RMS Each
• 1/2" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $11.00 in rewards to spend later

install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
72
$109.99 /pair

In stock

Only 3 Left!

Add to Cart
Used from: $69.99 Like New from: $84.99
See all 14 special offers
Limited time!

Rockford Fosgate Prime R14X2

120W Peak (60W RMS) 4” Prime Series 2 Way Coaxial 4-ohm Speakers

R14X2 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Prime R14X2

120W Peak (60W RMS) 4” Prime Series 2 Way Coaxial 4-ohm Speakers

• 60 watts Peak Each, 30 watts RMS Each
• 1/2" Silk Dome tweeters
• Vacuum polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Free Speaker Accessory at Checkout!
VIP Star Icon

VIP Product Get $6.50 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your DeVille
  • Dash Corner
17
$64.99 /pair
Notify Me

• 60 watts Peak Each, 30 watts RMS Each
• 1/2" Silk Dome tweeters
• Vacuum polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Rockford Fosgate Punch P1 P1694

300W Peak (150W RMS) 6x9" Punch Series 4 Way Coaxial 4-ohm Speakers

P1694 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch P1 P1694

300W Peak (150W RMS) 6x9" Punch Series 4 Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 75 watts RMS Each
• 1" Titanium composite dome midrange
• 1/2" PEI (Polyetherimide) Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

VIP Star Icon

VIP Product Get $12.00 in rewards to spend later

install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
54
$119.99 /pair
Notify Me

• 150 watts Peak Each, 75 watts RMS Each
• 1" Titanium composite dome midrange
• 1/2" PEI (Polyetherimide) Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Rockford Fosgate Prime R165-S

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

R165-S big Out of stock
Go to item page Right Arrow Icon of Right Arrow

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

install icon

Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
41
$79.99 /set
Notify Me

• 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

Limited time!

Rockford Fosgate Punch P1 P152-S

200W Peak (100W RMS) 5.52" Punch Series 2 Way Component 4-ohm Speaker System

P152-S big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Rockford Fosgate Punch P1 P152-S

200W Peak (100W RMS) 5.52" Punch Series 2 Way Component 4-ohm Speaker System

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Free Speaker Accessory at Checkout!
VIP Star Icon

VIP Product Get $16.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your DeVille
  • Front Door
16
$159.99 /set
Add to Cart

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Prev 3 4 5 6 7 Next

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    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!
    Why Shop With Us?
    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.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2009 Dodge Durango Hybrid

    1991 Isuzu Spacecab

    1978 Cadillac DeVille

    1997 BMW 840Ci

    2003 Dodge Intrepid

    1972 Buick GS 455

    1990 Nissan Sentra

    2007 Toyota Solara

    1994 Geo Tracker

    2021 Jeep Cherokee

    Vehicle
    Store     Delete

    2007 Harley Davidson FLHTC/I Electra Glide Classic

    2012 Harley Davidson FLHTC Electra Glide Classic

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 1978 DeVille
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo