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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 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.
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4) New Rockford Fosgate R169X2 6x9" 260W 2 Way Car Coaxial Speakers Audio Stereo

260W Max (130W RMS) 6x9" 2-Way PRIME Series Coaxial Speakers Package

R169X2 2 Pack big
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4) New Rockford Fosgate R169X2 6x9" 260W 2 Way Car Coaxial Speakers Audio Stereo

260W Max (130W RMS) 6x9" 2-Way PRIME Series Coaxial Speakers Package

• Peak Power: 260W
• RMS Power: 130W
• CEA-2031 Compliant Speakers
• Mounting Depth: 2-7/8" • Polypropylene Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 90dB

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49
$199.98

In stock

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• Peak Power: 260W
• RMS Power: 130W
• CEA-2031 Compliant Speakers
• Mounting Depth: 2-7/8" • Polypropylene Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 90dB

Rockford Fosgate Power T1693 (2-Pairs, 4-Total)

800W Peak (400W RMS) 6x9" 3-Way Power Series Coaxial Speakers (2-Pairs)

09-T1693_2 big
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Rockford Fosgate Power T1693 (2-Pairs, 4-Total)

800W Peak (400W RMS) 6x9" 3-Way Power Series Coaxial Speakers (2-Pairs)

• Peak Power: 400W
• RMS Power: 200W
• 1" Aluminum Dome Tweeter with Polyurethane Suspension
• Mounting Depth: 3-1/2" • Polypropylene-Carbon Fiber Hybrid Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 90dB

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32
$599.98

In stock

Only 3 Left!

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• Peak Power: 400W
• RMS Power: 200W
• 1" Aluminum Dome Tweeter with Polyurethane Suspension
• Mounting Depth: 3-1/2" • Polypropylene-Carbon Fiber Hybrid Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 90dB

NVX - Worth the Envy - Direct to Consumer Car Audio

2) Rockford Fosgate R165X3 6.5" + 2) 6x9" Coaxial Speakers

180W Peak (90W RMS) 6.5" 3-Way PRIME Series Coaxial Speakers w/ Silk Tweeters Package

R169X2,R165X3 big
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2) Rockford Fosgate R165X3 6.5" + 2) 6x9" Coaxial Speakers

180W Peak (90W RMS) 6.5" 3-Way PRIME Series Coaxial Speakers w/ Silk Tweeters Package

• Peak Power: 180W
• RMS Power: 90W
• 1/2" Silk Dome Piezo Tweeter
• Mounting Depth: 2-3/16"
• CEA-2031 Compliant Speakers
• 4 Ohm Impedance
• Sensitivity: 91dB

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203
$179.98

In stock

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• Peak Power: 180W
• RMS Power: 90W
• 1/2" Silk Dome Piezo Tweeter
• Mounting Depth: 2-3/16"
• CEA-2031 Compliant Speakers
• 4 Ohm Impedance
• Sensitivity: 91dB

Rockford Fosgate R169X3 6x9" 260W 3 Way + R165X3 6.5" 3 Way Car Speakers Coaxial

260W Peak (130W RMS) 6x9" 3-Way PRIME Series Coaxial Speakers Package

R169X3 R165X3 big
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Rockford Fosgate R169X3 6x9" 260W 3 Way + R165X3 6.5" 3 Way Car Speakers Coaxial

260W Peak (130W RMS) 6x9" 3-Way PRIME Series Coaxial Speakers Package

• Peak Power: 260W
• RMS Power: 130W
• CEA-2031 Compliant Speakers
• Mounting Depth: 2-7/8"
• Polypropylene Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 90dB

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192
$189.98

In stock

Add to Cart

• Peak Power: 260W
• RMS Power: 130W
• CEA-2031 Compliant Speakers
• Mounting Depth: 2-7/8"
• Polypropylene Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 90dB

2) Rockford Fosgate R14X2 4" 60W + 2) R169X2 6x9" 130W 2-Way Car Audio Speakers

120W Peak 4" 2-Way PRIME Series Coaxial Car Audio Speakers Package

R169X2,R14X2 big
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2) Rockford Fosgate R14X2 4" 60W + 2) R169X2 6x9" 130W 2-Way Car Audio Speakers

120W Peak 4" 2-Way PRIME Series Coaxial Car Audio Speakers Package

• Peak Power: 120W
• RMS Power: 60W
• 1/2" Silk Balanced Dome Tweeter
• Mounting Depth: 1-3/4"
• Polypropylene Mid-Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 85dB

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66
$164.98

In stock

Add to Cart

• Peak Power: 120W
• RMS Power: 60W
• 1/2" Silk Balanced Dome Tweeter
• Mounting Depth: 1-3/4"
• Polypropylene Mid-Woofer Cone
• 4 Ohm Impedance
• Sensitivity: 85dB

Rockford Fosgate Power T1692 (2-Pairs, 4-Total)

800W Peak (400W RMS) 6x9" 2-Way Power Series Coaxial Speakers (2-Pairs)

09-T1692_2 big
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Rockford Fosgate Power T1692 (2-Pairs, 4-Total)

800W Peak (400W RMS) 6x9" 2-Way Power Series Coaxial Speakers (2-Pairs)

• 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

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23
$579.98

In stock

Only 2 Left!

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• 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

Rockford Fosgate Prime R165X3 + NVX Sound Deadening

6.5" 3-Way PRIME Series Coaxial Speakers w/ Silk Tweeters + Sound Dampening

SDSK2,R165X3 big
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Rockford Fosgate Prime R165X3 + NVX Sound Deadening

6.5" 3-Way PRIME Series Coaxial Speakers w/ Silk Tweeters + Sound Dampening

• Peak Power: 180W
• RMS Power: 90W
• 1/2" Silk Dome Piezo Tweeter
• Eliminates Road Noise
• Quiets Vibrations
• Stops Annoying Rattles
• Increases SPL

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Free or discounted install kits when available.

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Add details to confirm fitment.
202
List price $98.73
-19% $79.99 /pair

In stock

Add to Cart

• Peak Power: 180W
• RMS Power: 90W
• 1/2" Silk Dome Piezo Tweeter
• Eliminates Road Noise
• Quiets Vibrations
• Stops Annoying Rattles
• Increases SPL

Rockford Fosgate Power T2652-S (Pair, 2-Total)

800W Peak (400W RMS) 6.5" Power Series 2-way Component Speaker System (Pair)

T2652S_2 big
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Rockford Fosgate Power T2652-S (Pair, 2-Total)

800W Peak (400W RMS) 6.5" Power Series 2-way Component Speaker System (Pair)

• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome Tweeters with integral suspension
• Carbon Fiber & polypropylene injection molded cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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42
$899.98

In stock

Add to Cart

• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome Tweeters with integral suspension
• Carbon Fiber & polypropylene injection molded cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

Rockford Fosgate Power T1692 with Sound Damping

400W Peak (200W RMS) 6x9" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-T1692_SDBSK2 big
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Rockford Fosgate Power T1692 with Sound Damping

400W Peak (200W RMS) 6x9" Power Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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71
List price $308.73
$304.98

In stock

Add to Cart

• 200 watts Peak Each, 100 watts RMS Each
• 1" Aluminum Dome tweeters
• Polypropylene-Carbon Fiber Hybrid cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Rockford Fosgate Power T1675-S with Speaker Installation Kit

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

R169X3, XBAF69, SDSK2, SDRLR1, BTK106 big
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Rockford Fosgate Power T1675-S with Speaker Installation Kit

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

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

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Free or discounted install kits when available.

Fits select models only.
Add details to confirm fitment.
260
List price $202.70
-23% $156.07 /pair

In stock

Add to Cart

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

Rockford Fosgate P1650 + Free NVX Sound Deadening

220W Max (110W RMS) 6.5" 2-Way P1 Punch Series Coaxial Speakers with Sound Dampening

P1650, SDSK2 big
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Rockford Fosgate P1650 + Free NVX Sound Deadening

220W Max (110W RMS) 6.5" 2-Way P1 Punch Series Coaxial Speakers with Sound Dampening

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

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Free or discounted install kits when available.

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Add details to confirm fitment.
132
List price $128.73
-15% $109.99 /pair

In stock

Add to Cart

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

Rockford Fosgate R169X2 with Accessories

160W Peak 5-1/4" PRIME Series Coaxial Speakers + NVX Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

R1525X2, XBAF525, SDSK2, SDRLR1, BTK106 big
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Rockford Fosgate R169X2 with Accessories

160W Peak 5-1/4" PRIME Series Coaxial Speakers + NVX Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• Peak Power: 80W
• RMS Power: 40W
• 2-Way Coaxial Design
• 4 ohm Impedance
• Polypropylene Cone
• Rubber Surround
• 1/2" Silk Dome Tweeter
• Integrated Crossover

Save 15% Off Package Deals at Checkout!
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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
170
List price $152.70
-21% $120.09 /pair

In stock

Add to Cart

• Peak Power: 80W
• RMS Power: 40W
• 2-Way Coaxial Design
• 4 ohm Impedance
• Polypropylene Cone
• Rubber Surround
• 1/2" Silk Dome Tweeter
• Integrated Crossover

Rockford Fosgate Prime R1525X2 with Sound Damping

160W Peak (80W RMS) 5.25" PRIME Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

R1525X2_SDBSK2 big
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Rockford Fosgate Prime R1525X2 with Sound Damping

160W Peak (80W RMS) 5.25" PRIME Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 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

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65
List price $98.73
$94.98

In stock

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• 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

Rockford Fosgate Prime R169X2 with Sound Damping

260W Peak (130W RMS) 6x9" Prime Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

R169X2_SDBSK2 big
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Rockford Fosgate Prime R169X2 with Sound Damping

260W Peak (130W RMS) 6x9" Prime Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

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

Save 15% Off Package Deals at Checkout!
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Add details to confirm fitment.
97
List price $118.73
$114.98

In stock

Add to Cart

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

Rockford Fosgate Punch P1692 with Sound Damping

300W Peak (150W RMS) 6x9" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P1692_SDBSK2 big
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Rockford Fosgate Punch P1692 with Sound Damping

300W Peak (150W RMS) 6x9" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 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

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130
List price $128.73
$124.98

In stock

Add to Cart

• 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

Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

09-P142_SDBSK2 big
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Rockford Fosgate Punch P142 with Sound Damping

120W Peak (60W RMS) 4" Punch Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 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

Save 15% Off Package Deals at Checkout!
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59
List price $128.73
$124.98

In stock

Only 3 Left!

Add to Cart

• 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

Rockford Fosgate T1650-S with Sound Damping

320W Peak (160W RMS) 6.5" Power Series 2-way 4-ohm Euro-Fit Component Speaker System + NVX SDBSK2 Premium Sound Damping

T1650S_SDBSK2 big
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Rockford Fosgate T1650-S with Sound Damping

320W Peak (160W RMS) 6.5" Power Series 2-way 4-ohm Euro-Fit Component Speaker System + NVX SDBSK2 Premium Sound Damping

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

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49
List price $398.73
$394.98

In stock

Add to Cart

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

Rockford Fosgate TMS69 with Sound Damping

200W Peak (100W RMS) 6”x9” Full-Range Speakers for Harley-Davidson Motorcycle Bag Lids + NVX SDBSK2 Premium Sound Damping

TMS69_SDBSK2 big
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Rockford Fosgate TMS69 with Sound Damping

200W Peak (100W RMS) 6”x9” Full-Range Speakers for Harley-Davidson Motorcycle Bag Lids + NVX SDBSK2 Premium Sound Damping

• 200 watts Peak Each, 100 watts RMS Each
• 1" Film Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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49
List price $458.73
$454.98

In stock

Only 1 Left!

Add to Cart

• 200 watts Peak Each, 100 watts RMS Each
• 1" Film Dome Tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Rockford Fosgate Punch P142 (Open Box, Great)

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

P142 big
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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.
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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 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
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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!
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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

NVX - Worth the Envy - Direct to Consumer Car Audio
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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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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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