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2020 Cadillac CT4

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Subwoofers and enclosures, specifically designed for your 2020 CT4, as well as universal fit solutions

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

Subwoofers and Boxes for 2020 Cadillac CT4

A subwoofer that works with, or is designed for, your 2020 Cadillac CT4 will add bass, clarity and depth to your music and system. A quality subwoofer will give realism and an overall rich, complete sound that you otherwise would not get with a factory car sound system.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your Cadillac CT4, but verify your trunk/rear vehicle area.

Universal Subwoofers

Universal Subwoofers

These sub(s) are perfect for adding to a empty box or custom built enclosure. They should work with your Cadillac CT4, but verify your trunk/rear vehicle area.

Universal-fit loaded and powered sub boxes

Universal-fit Loaded Subwoofer Boxes

These boxes include sub(s) and some include an amp. They should fit your Cadillac CT4, but verify your trunk/rear vehicle area.

Universal-fit empty unloaded sub boxes

Empty Universal-fit Sub Box Enclosures

These boxes are ready for you to add a sub and amp. They should fit your ride, but verify your trunk/rear vehicle area.

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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.
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.
Punch Series (72)
CompRT Series (42)
S Series (42)
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Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
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.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
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".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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Kicker L7X121 (49L7X121)

2000W RMS 12" SoloX Series Dual 1-ohm Subwoofer

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Kicker L7X121 (49L7X121)

2000W RMS 12" SoloX Series Dual 1-ohm Subwoofer

• RMS Power: 1000 - 2000 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 10-1/8"

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• RMS Power: 1000 - 2000 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 10-1/8"

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

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

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

Empty Dual 10" Prefabricated Vented 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: 2.50 cubic feet
• Computer-designed CNC cut

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• 10" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.50 cubic feet
• Computer-designed CNC cut

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Kicker L7S102 (44L7S102)

1200W Peak (600W RMS) 10” Solo-Baric L7S Series Dual 2-ohm Subwoofer

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Kicker L7S102 (44L7S102)

1200W Peak (600W RMS) 10” Solo-Baric L7S Series Dual 2-ohm Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 6-1/4"
• Sensitivity: 85.87 dB

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Kicker L7XS122 (52L7XS122)

3000W RMS 12" SoloXS L7XS Series Dual 2-ohm Square Car Subwoofer

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Kicker L7XS122 (52L7XS122)

3000W RMS 12" SoloXS L7XS Series Dual 2-ohm Square Car Subwoofer

• RMS Power: 1500 - 3000 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 10-1/8"

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• RMS Power: 1500 - 3000 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 10-1/8"

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Kicker L7T82 (46L7T82)

700W Peak (350W RMS) 8" Solo-Baric L7T Series Dual 2-ohm Shallow Car Subwoofer

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Kicker L7T82 (46L7T82)

700W Peak (350W RMS) 8" Solo-Baric L7T Series Dual 2-ohm Shallow Car Subwoofer

• Peak Power: 700 watts
• RMS Power: 350 watts
• Impedance: Dual 2 ohm
• SoloKon Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 2-3/4"
• Sensitivity: 84.835 dB

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List price $239.99
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MTX SLH12

Empty Single 12" Ported Sledgehammer Enclosure

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MTX SLH12

Empty Single 12" Ported Sledgehammer Enclosure

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.73 cubic feet
• Mounting hardware included

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• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1.73 cubic feet
• Mounting hardware included

Wet Sounds ZERO 10 ENC

Empty Single 10" Sealed Enclosure for ZERO 10 Subwoofers

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Wet Sounds ZERO 10 ENC

Empty Single 10" Sealed Enclosure for ZERO 10 Subwoofers

• 10" Single Sealed Truck Subwoofer Enclosure
• Medium Density Fiberboard (MDF) construction
• Compatible with ZERO 10 subwoofers (Sold separately)

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Tru Spec Single 8" (1445DF)

Empty Single 8" Vented Prefabricated Enclosure

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Tru Spec Single 8" (1445DF)

Empty Single 8" Vented Prefabricated Enclosure

• 8" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.65 cubic feet
• Compatible for Sundown SA8V2 and similar subwoofers (Sold separately)

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NVX YSW152

1600W Peak (800W RMS) 15" Y-Series Dual 2-ohm Car Subwoofer

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NVX YSW152

1600W Peak (800W RMS) 15" Y-Series Dual 2-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 7.47"
• Sensitivity: 85 dB

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NVX NE122S w/ Kicker CompVT CVT124 (52CVT124)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 800W Peak (400W RMS) 12" CompVT Series Single 4-ohm Shallow Car Subwoofer

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NVX NE122S w/ Kicker CompVT CVT124 (52CVT124)

Dual 12" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 2.0 Cu. Ft. with Polyfil and NVX Logo w/ 800W Peak (400W RMS) 12" CompVT Series Single 4-ohm Shallow Car Subwoofer

• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

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• [12" Dual Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 2.00 cubic feet
• Premium Black Carpet with Black NVX Logo

Rockford Fosgate Power T1D210 + Belva MDFS10 Subwoofer Enclosure

600W 10" Power T1 Series Dual 2 ohm Subwoofer + 10" Sealed Enclosure

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Rockford Fosgate Power T1D210 + Belva MDFS10 Subwoofer Enclosure

600W 10" Power T1 Series Dual 2 ohm Subwoofer + 10" Sealed Enclosure

• 1200W Peak
• 600W RMS
• High Excursion TPE (Thermo-Plastic Elastomer) Surround
• SWIFT Impedance Selection
• Dual Opposing Spiders
• Parabolic Triangular Cone Geometry

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Sundown Audio X-12 v.3 D2 12" (X12V3D2)

5000W Peak (2500W RMS) 12" X Series Dual 2-ohm Car Subwoofer (SW-XV312D2)

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Sundown Audio X-12 v.3 D2 12" (X12V3D2)

5000W Peak (2500W RMS) 12" X Series Dual 2-ohm Car Subwoofer (SW-XV312D2)

• Peak Power: 5000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• Pressed Paper Cone
• Mega Roll V2 Surround
• Mount depth: 10.4"
• Sensitivity: 84 dB

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List price $839.99
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Massive Audio GTR84

800W Peak (600W RMS) 8" GTR Series Dual 4-ohm Subwoofer

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Massive Audio GTR84

800W Peak (600W RMS) 8" GTR Series Dual 4-ohm Subwoofer

• Peak Power: 800 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Textured Non-Pressed Pulp with Resin Cone
• High Roll Foam Surround
• Mount depth:
• Sensitivity: 82.5 dB

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List price $179.95
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Wet Sounds WS-SUB 650 ES

150W Peak (75W RMS) Loaded Single 6.5" Vented Marine and Powersports Enclosure

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Wet Sounds WS-SUB 650 ES

150W Peak (75W RMS) Loaded Single 6.5" Vented Marine and Powersports Enclosure

• Ported enclosure with 1 6.5" Subwoofer
• 75 watts RMS (150 watts Peak)
• Final Impedance: 4-ohm

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Hertz MPS 250 S2

1000W Peak (500W RMS) 10" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

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Hertz MPS 250 S2

1000W Peak (500W RMS) 10" Mille Pro Series Single 2-ohm Shallow Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 2 ohm
• Polypropylene Cone material
• Rubber Surround material
• Mount depth: 3.25"
• Sensitivity: 82.5 dB

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Atrend WDX12DV

Empty Dual 12" Vented Enclosure for DB Drive WDX WDXG2 G4 and Euphoria FX Series Subwoofers

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Atrend WDX12DV

Empty Dual 12" Vented Enclosure for DB Drive WDX WDXG2 G4 and Euphoria FX Series Subwoofers

• 12" Dual Ported Subwoofer Enclosure
• Fits DB Drive WDX, WDXG2, G4, and Euphoria FX series subwoofers
• 1" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 3.1 cubic feet

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Cerwin-Vega XE10DV

1600W Peak (450W RMS) Loaded Dual 10" Vented Enclosure

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Cerwin-Vega XE10DV

1600W Peak (450W RMS) Loaded Dual 10" Vented Enclosure

• Ported enclosure with 2 10" XED Series Subwoofer
• 450 watts RMS (1600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 25.9" L x 11.8" H x 10" W

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Massive Audio GTX122H (Open Box, Great)

1600W Peak (800W RMS) 12" GTX Series Dual 2-ohm Car Subwoofer

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Massive Audio GTX122H (Open Box, Great)

1600W Peak (800W RMS) 12" GTX Series Dual 2-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• UV-treated Non-Pressed Paper cone
• Pressed Foam surround
• Mount depth: 6.69"
• Sensitivity: 88 dB

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• Peak Power: 1600 watts
• RMS Power: 800 watts
• Impedance: Dual 2 ohm
• UV-treated Non-Pressed Paper cone
• Pressed Foam surround
• Mount depth: 6.69"
• Sensitivity: 88 dB

NVX NSW122 Version 3 (NSW122v3)

1000W Peak (500W RMS) N-Series v3 12" Dual 2-Ohm Car Subwoofer

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NVX NSW122 Version 3 (NSW122v3)

1000W Peak (500W RMS) N-Series v3 12" Dual 2-Ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 2 ohm
• Enhanced Pressed Paper Cone
• High Roll Foam Surround
• Mount depth: 6.0"
• Sensitivity: 87 dB

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JL Audio 12TW3-D8

400W RMS 12" TW3 Series Dual 8-ohm Shallow Subwoofer

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JL Audio 12TW3-D8

400W RMS 12" TW3 Series Dual 8-ohm Shallow Subwoofer

• RMS Power: 400 watts
• Impedance: Dual 8 ohm
• Polypropylene-Mica Cone
• Rubber Surround
• Mount depth: 3.50"
• Sensitivity: 84.23 dB

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