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1978 Cadillac Eldorado

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Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Universal-Fit Audio for 1978 Cadillac Eldorado

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

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Price Range
Number of Subwoofers
This value represents the number of subwoofers that the enclosure accommodates or that are included in the package or bundled kit.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
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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.
Punch Series (34)
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PRO-NEO Series (1)
Condition
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Wet Sounds REVO12PSEXSG*

1000W Peak (500W RMS) Loaded Dual 12" Sealed Enclosure with Passive Radiator (Gray Stainless Steel Grilles)

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Wet Sounds REVO12PSEXSG*

1000W Peak (500W RMS) Loaded Dual 12" Sealed Enclosure with Passive Radiator (Gray Stainless Steel Grilles)

• Sealed enclosure with 2 12" REVO Series Subwoofers
• 500 watts RMS (1000 watts Peak)
• Final Impedance: 4-ohm
• Gray open style stainless steel grilles included
• Dimensions: 15.5" L x 15.5" H x 15.5" W

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$1,739.99

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Rockford Fosgate Prime R2 R2-2X10 (Open Box, Great)

2000W Peak (1000W RMS) 10" Prime R2 Series Dual 2-Ohm Sealed Subwoofer Enclosure

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Rockford Fosgate Prime R2 R2-2X10 (Open Box, Great)

2000W Peak (1000W RMS) 10" Prime R2 Series Dual 2-Ohm Sealed Subwoofer Enclosure

• 1000 watts Dual 10" Sealed Subwoofer Enclosure
• Dual 2 ohm Impedance
• Spring-loaded Terminal Posts
• Enclosure Dimensions: 12.5" TD x 7.5" BD x 30.12" W x 12.20" H

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List price $339.99
-30% $237.99
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• 1000 watts Dual 10" Sealed Subwoofer Enclosure
• Dual 2 ohm Impedance
• Spring-loaded Terminal Posts
• Enclosure Dimensions: 12.5" TD x 7.5" BD x 30.12" W x 12.20" H

NVX - Worth the Envy - Direct to Consumer Car Audio

Tru Spec Dual 10" and 2x Sundown Audio E10 v.4 D2

Dual 10" Vented Prefabricated Enclosure with 1500W Peak (750W RMS) 10" E Series Dual 2-ohm Car Subwoofer (SW-EV410D2)

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Tru Spec Dual 10" and 2x Sundown Audio E10 v.4 D2

Dual 10" Vented Prefabricated Enclosure with 1500W Peak (750W RMS) 10" E Series Dual 2-ohm Car Subwoofer (SW-EV410D2)

•10" Dual Ported Subwoofer Enclosure
•3/4" Medium Density Fiberboard (MDF) construction
•Total box volume: 2 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

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•10" Dual Ported Subwoofer Enclosure
•3/4" Medium Density Fiberboard (MDF) construction
•Total box volume: 2 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

Limited time!

Rockford Fosgate Prime R2S-1X12 (Like New (Open Box))

500W Peak, Prime Series Single 12" R2SD4 Subwoofer Loaded Enclosure

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Rockford Fosgate Prime R2S-1X12 (Like New (Open Box))

500W Peak, Prime Series Single 12" R2SD4 Subwoofer Loaded Enclosure

• Peak Power: 500 watts
• RMS Power: 250 watts
• Final Impedance: 2 ohm
• Solid 5/8" MDF Construction
• Complete with high-density black box carpeting

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List price $259.99
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• Peak Power: 500 watts
• RMS Power: 250 watts
• Final Impedance: 2 ohm
• Solid 5/8" MDF Construction
• Complete with high-density black box carpeting

JL Audio 10W0v3-4 Subwoofer + 50% off MDFS10 Sealed Box

300W RMS 10" W0v3 Series Single 4-Ohm Subwoofer with Sealed Enclosure

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JL Audio 10W0v3-4 Subwoofer + 50% off MDFS10 Sealed Box

300W RMS 10" W0v3 Series Single 4-Ohm Subwoofer with Sealed Enclosure

• Sensitivity: 84.07 dB
• Mounting depth: 4.90 "
• Mineral-Filled Polypropylene Cone
• Large Roll Surround
• Elevated Frame Cooling
• DMA Optimized Motor System
• Metallic Silver Frame Finish • 10" Sealed Enclosure
• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil

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-35% $155.92

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JBL Stage 1200D (Like New (Open Box))

2000W Peak (1000W RMS) Loaded Dual 12" Vented Enclosure

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JBL Stage 1200D (Like New (Open Box))

2000W Peak (1000W RMS) Loaded Dual 12" Vented Enclosure

• Ported enclosure with 2 12" Stage Series Subwoofer
• 1000 watts RMS (500 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 30-1/8" L x 15" H x 13-11/16" W

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List price $439.95
-19% $356.96
$321.26 with coupon | Price details

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Bazooka MBT1014 (Open Box, Good)

150W Peak Loaded Single 10" Non-Amplified Ported Subwoofer Bass Tube Enclosure

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Bazooka MBT1014 (Open Box, Good)

150W Peak Loaded Single 10" Non-Amplified Ported Subwoofer Bass Tube Enclosure

• Ported enclosure with 1 10" BT Series Subwoofer
• 200 watts Peak
• Final Impedance: 4-ohm
• Dimensions: 20.75" L x 12.2" H x 10.3" W

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List price $249.99
-28% $179.99
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• Ported enclosure with 1 10" BT Series Subwoofer
• 200 watts Peak
• Final Impedance: 4-ohm
• Dimensions: 20.75" L x 12.2" H x 10.3" W

Limited time!

NVX NE102S w/ JL Audio 10W1v3-2

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo 300W RMS 10" W1v3 Series Single 2-ohm Subwoofer

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NVX NE102S w/ JL Audio 10W1v3-2

Dual 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.2 Cu. Ft. with Polyfil and NVX Logo 300W RMS 10" W1v3 Series Single 2-ohm Subwoofer

• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

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-19% $519.97

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• 10" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.20 cubic feet
• Premium Black Carpet with Black NVX Logo

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JBL Stage 1200S (JBLSUBST1200SAM) (Open Box, Great)

1000W Peak (250W RMS) Loaded Single 12" Sealed Shallow Enclosure

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JBL Stage 1200S (JBLSUBST1200SAM) (Open Box, Great)

1000W Peak (250W RMS) Loaded Single 12" Sealed Shallow Enclosure

• Sealed enclosure with 1 12" Stage Series Subwoofer
• 250 watts RMS (1000 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 17.25" L x 14.5" H x 11.5" W

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JL Audio CLS113RG-W7AE (Like New (Open Box))

One 13" JL Audio 13W7AE-D1.5 Loaded in a Sealed, Rear-Firing Enclosure (Black Carpet)

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JL Audio CLS113RG-W7AE (Like New (Open Box))

One 13" JL Audio 13W7AE-D1.5 Loaded in a Sealed, Rear-Firing Enclosure (Black Carpet)

• ProWedge 13" W7AE Loaded Sealed Subwoofer Enclosure
• 3000W Peak
• 1500W RMS
• 3 Ohm Final Impedance
• High Grade Black Carpet Finish
• Engraved JL Audio and W7 Logos
• Rear Firing Design
• 10th Anniversary Edition W7 Subwoofer

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List price $2299.99
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• ProWedge 13" W7AE Loaded Sealed Subwoofer Enclosure
• 3000W Peak
• 1500W RMS
• 3 Ohm Final Impedance
• High Grade Black Carpet Finish
• Engraved JL Audio and W7 Logos
• Rear Firing Design
• 10th Anniversary Edition W7 Subwoofer

Limited time!

JL Audio MicroSub CP208LG-W3v3 (Open Box, Good)

500 Watt RMS Dual 8" 8W3v3-4 Subwoofers Loaded in a Slot-Ported MicroSub Enclosure

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JL Audio MicroSub CP208LG-W3v3 (Open Box, Good)

500 Watt RMS Dual 8" 8W3v3-4 Subwoofers Loaded in a Slot-Ported MicroSub Enclosure

• Dual 8" Enclosed Subwoofer System w/ Two 8w3v3-4 Subwoofer Drivers
• Peak Power: 1000 watts
• RMS Power: 500 watts
• Final Impedance: 2 Ohm mono
• Mineral-filled Polypropylene Cone Woofers

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List price $879.99
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• Dual 8" Enclosed Subwoofer System w/ Two 8w3v3-4 Subwoofer Drivers
• Peak Power: 1000 watts
• RMS Power: 500 watts
• Final Impedance: 2 Ohm mono
• Mineral-filled Polypropylene Cone Woofers

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Belva BLB112LED (Open Box, Great)

12" Single 750W Loaded Ported Car Subwoofer with Multi-Color LED and Remote

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Belva BLB112LED (Open Box, Great)

12" Single 750W Loaded Ported Car Subwoofer with Multi-Color LED and Remote

• 750W Single 12" Ported Subwoofer Enclosure w/ Multi-Color LED and Remote
• RMS: 300W
• 4 ohm impedance
• Ported enclosure with black carpet and embroidered Belva logo
• Angled-back ported enclosure

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List price $199.99
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• 750W Single 12" Ported Subwoofer Enclosure w/ Multi-Color LED and Remote
• RMS: 300W
• 4 ohm impedance
• Ported enclosure with black carpet and embroidered Belva logo
• Angled-back ported enclosure

Limited time!

Belva BLB112LED (Open Box, Good)

12" Single 750W Loaded Ported Car Subwoofer with Multi-Color LED and Remote

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Belva BLB112LED (Open Box, Good)

12" Single 750W Loaded Ported Car Subwoofer with Multi-Color LED and Remote

• 750W Single 12" Ported Subwoofer Enclosure w/ Multi-Color LED and Remote
• RMS: 300W
• 4 ohm impedance
• Ported enclosure with black carpet and embroidered Belva logo
• Angled-back ported enclosure

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List price $199.99
-67% $65.99
$59.39 with coupon | Price details

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• 750W Single 12" Ported Subwoofer Enclosure w/ Multi-Color LED and Remote
• RMS: 300W
• 4 ohm impedance
• Ported enclosure with black carpet and embroidered Belva logo
• Angled-back ported enclosure

Limited time!

JL Audio HO112RG-W3v3 (Open Box, Great)

500W RMS 12" W3v3 H.O. Wedge High-Output Ported Loaded Subwoofer Enclosure Box with Grille Included

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JL Audio HO112RG-W3v3 (Open Box, Great)

500W RMS 12" W3v3 H.O. Wedge High-Output Ported Loaded Subwoofer Enclosure Box with Grille Included

• 500 Watts RMS
• Sensitivity: 87.15 dB
• 2 Ohm Final Impedance
• Injection-molded, mineral-filled polypropylene cone
• Nitrile butadiene rubber surround
•Customization trim ring
• Floating Cone Attach Method
• DMA Optimized Motor
• JL Audio's patented, chamber-coupled port design
• Gray carpet wrap
• fine-tuned through extensive real-world listening

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List price $799.99
-30% $559.99
$503.99 with coupon | Price details

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• 500 Watts RMS
• Sensitivity: 87.15 dB
• 2 Ohm Final Impedance
• Injection-molded, mineral-filled polypropylene cone
• Nitrile butadiene rubber surround
•Customization trim ring
• Floating Cone Attach Method
• DMA Optimized Motor
• JL Audio's patented, chamber-coupled port design
• Gray carpet wrap
• fine-tuned through extensive real-world listening

Limited time!

NVX NE101S w/ Rockford Fosgate Power T1 T1D210

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ 10" Power Series Dual 2-ohm Car Subwoofer

NE101S_T1D210 big
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NVX NE101S w/ Rockford Fosgate Power T1 T1D210

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ 10" Power Series Dual 2-ohm Car Subwoofer

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
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List price $563.98
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• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

Limited time!

JL Audio MicroSub CP208LG-W3v3 (Open Box, Great)

500 Watt RMS Dual 8" 8W3v3-4 Subwoofers Loaded in a Slot-Ported MicroSub Enclosure

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JL Audio MicroSub CP208LG-W3v3 (Open Box, Great)

500 Watt RMS Dual 8" 8W3v3-4 Subwoofers Loaded in a Slot-Ported MicroSub Enclosure

• Dual 8" Enclosed Subwoofer System w/ Two 8w3v3-4 Subwoofer Drivers
• Peak Power: 1000 watts
• RMS Power: 500 watts
• Final Impedance: 2 Ohm mono
• Mineral-filled Polypropylene Cone Woofers

10% Off Open Box!
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List price $879.99
-30% $615.99
$554.39 with coupon | Price details

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• Dual 8" Enclosed Subwoofer System w/ Two 8w3v3-4 Subwoofer Drivers
• Peak Power: 1000 watts
• RMS Power: 500 watts
• Final Impedance: 2 Ohm mono
• Mineral-filled Polypropylene Cone Woofers

Limited time!

NVX NE101S w/ Rockford Fosgate Power T1 T1D410

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ 10" Power Series Dual 4-ohm Car Subwoofer

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NVX NE101S w/ Rockford Fosgate Power T1 T1D410

Single 10" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.65 Cu. Ft. with Polyfil and NVX Logo w/ 10" Power Series Dual 4-ohm Car Subwoofer

• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

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List price $563.98
-5% $535.98

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• 10" Single Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .65 cubic feet
• Premium Black Carpet with Black NVX Logo

Hertz MP 250 D2.3 + 10" Sealed Enclosure

1200W Peak (600W RMS) 10” Mille Legend Series Dual Subwoofer

MP 250 D2.3, MDFS10 big
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Hertz MP 250 D2.3 + 10" Sealed Enclosure

1200W Peak (600W RMS) 10” Mille Legend Series Dual Subwoofer

• 1200 Watts Max
• 600 Watts RMS
• Mineral-injected paper cone with rubber surround
• Aluminum alloy basket
• 2 Ohm Impedance
• Top-mount depth: 5-9/16"

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121
List price $674.99
-18% $554.99

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Hertz MP 300 D2.3 + Free 12" Sealed Enclosure

12" Mille Pro Series DVC 1200W Dual 2 Ohm Car Subwoofer

MP 300 D2.3, MDFS12 big DISCONTINUED
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Hertz MP 300 D2.3 + Free 12" Sealed Enclosure

12" Mille Pro Series DVC 1200W Dual 2 Ohm Car Subwoofer

• 1200 Watts Max
• 600 Watts RMS
• Pressed-pulp cone with mineral powders cone material
• Aluminum alloy basket
• 2 Ohm Impedance
• Top-mount depth: 6-1/2"

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• 1200 Watts Max
• 600 Watts RMS
• Pressed-pulp cone with mineral powders cone material
• Aluminum alloy basket
• 2 Ohm Impedance
• Top-mount depth: 6-1/2"

Limited time!

NVX NE82S w/ Alpine R2-W8D4

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo w/8" R2-Series Dual 4-ohm Car Subwoofer

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NVX NE82S w/ Alpine R2-W8D4

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo w/8" R2-Series Dual 4-ohm Car Subwoofer

• 8" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .80 cubic feet
• Premium Black Carpet with Black NVX Logo

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

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List price $815.99
-33% $543.89

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• 8" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: .80 cubic feet
• Premium Black Carpet with Black NVX Logo

NVX - Worth the Envy - Direct to Consumer Car Audio
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    FAQ for Universal-Fit Audio & Electronics in 1978 Eldorado

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1978 Cadillac Eldorado?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your Eldorado.

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