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2020 BMW X4

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Subwoofers and enclosures, specifically designed for your 2020 X4, 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 BMW X4

A subwoofer that works with, or is designed for, your 2020 BMW X4 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.

Custom-fit subwoofer box

Custom-fit Subwoofer Boxes & Enclosures

Get a sub box designed specifically for your X4.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your BMW X4, 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 BMW X4, 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 BMW X4, 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.
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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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Sundown Audio SA-10 v.3 D2 10" (SA10V3D2)

3000W Peak (1500W RMS) 10" SA Series Dual 2-ohm Car Subwoofer (SAV310D2)

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Sundown Audio SA-10 v.3 D2 10" (SA10V3D2)

3000W Peak (1500W RMS) 10" SA Series Dual 2-ohm Car Subwoofer (SAV310D2)

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper Cone
• Foam Surround
• Mount depth: 8.11"
• Sensitivity: 82.5 dB

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List price $479.99
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Kicker Comp DC12 (43DC122)

600W Peak (300W RMS) Loaded Dual 12" Vented Enclosure

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Kicker Comp DC12 (43DC122)

600W Peak (300W RMS) Loaded Dual 12" Vented Enclosure

• Ported enclosure with 2 12" Comp Series Subwoofer
• 300 watts RMS (600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 17-1/4" L x 16" H x 32-7/16" W x 13-7/8" W2

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NVX - Worth the Envy - Direct to Consumer Car Audio

Earthquake Sound SWS-6.5X

200W Peak (100W RMS) 6.5" SWS Series Dual 4-ohm Shallow-mount Subwoofer

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Earthquake Sound SWS-6.5X

200W Peak (100W RMS) 6.5" SWS Series Dual 4-ohm Shallow-mount Subwoofer

• Peak Power: 200 watts
• RMS Power: 100 watts
• Impedance: Single 4 ohm
• Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 1-3/4"
• Sensitivity: 77.3 dB

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List price $149.00
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Tru Spec Single 10" (1446CO)

Empty Single 10" Vented Prefabricated Enclosure

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Tru Spec Single 10" (1446CO)

Empty Single 10" Vented Prefabricated Enclosure

• 10" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 1 cubic feet
• Compatible for Sundown SA10V2 and similar subwoofers (Sold separately)

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List price $229.99
-30% $159.99

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Kenwood eXcelon P-XW1221D

1200W Peak (600W RMS) Loaded Dual 12" Vented Enclosure

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Kenwood eXcelon P-XW1221D

1200W Peak (600W RMS) Loaded Dual 12" Vented Enclosure

• 1200W Max (600W RMS) Dual Pre-loaded 12" Vented Subwoofer Enclosure
• Polypropylene Cone with Diamond Array Pattern Woofer
Enclosure Dimensions: 12-9/16” D x 35-3/4” W x 15-13/16” H

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JL Audio CLS113RG-W7AE

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

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JL Audio CLS113RG-W7AE

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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Kicker CWR84 (48CWR84)

600W Peak (300W RMS) 8” CompR Series Dual 4-ohm Subwoofer

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Kicker CWR84 (48CWR84)

600W Peak (300W RMS) 8” CompR Series Dual 4-ohm Subwoofer

• Peak Power: 600 watts
• RMS Power: 150-300 watts
• Impedance: Dual 4 ohm
• Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 4 1/8"
• Sensitivity: 82.1 dB

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Rockford Fosgate Punch P2 P2-1X12

800W Peak (400W RMS) Single Punch P2 Series P2D2-12 Subwoofer Loaded Enclosure

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Rockford Fosgate Punch P2 P2-1X12

800W Peak (400W RMS) Single Punch P2 Series P2D2-12 Subwoofer Loaded Enclosure

• Peak Power: 800W
• High Modulus Kevlar Reinforced Paper Cone
• High Temperature 2" 4-Layer Voice Coil
• Single 12" Loaded, Ported Box
• Solid 5/8" MDF Construction

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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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Alpine R2-W12D4

2250W Peak (750W RMS) 12" R2-Series Dual 4-ohm Car Subwoofer

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Alpine R2-W12D4

2250W Peak (750W RMS) 12" R2-Series Dual 4-ohm Car Subwoofer

• Peak Power: 2250 watts
• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Kevlar Reinforced Pulp Paper Cone
• High-Amplitude Multi-Roll (HAMR) Surround
• Mount depth: 6.43"
• Sensitivity: 84.6 dB

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JL Audio 6W3V3-4

150W RMS 6.5" W3v3 Series Single 4-ohm Car Subwoofer

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JL Audio 6W3V3-4

150W RMS 6.5" W3v3 Series Single 4-ohm Car Subwoofer

• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 4.25"
• Sensitivity: 80.49 dB

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NVX SMW12D4

800W Peak (400W RMS) 12" S-Series Shallow-Mount Dual 4-ohm Car Subwoofer

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NVX SMW12D4

800W Peak (400W RMS) 12" S-Series Shallow-Mount Dual 4-ohm Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Reinforced Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 3.82"
• Sensitivity: 88 dB

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Atrend 15LSVB - Reptile Style

Empty Single 15" Vented SPL Subwoofer Enclosure (Reptile Style)

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Atrend 15LSVB - Reptile Style

Empty Single 15" Vented SPL Subwoofer Enclosure (Reptile Style)

• 15" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Premium plush black carpet finish
• Premium graphic patterns
• Signature miter and dado construction
• Bonded using proprietary trick glue
• Total box volume: 3 cubic feet

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List price $284.95
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Tru Spec Single 6.5” (1444OS)

Empty Single 6.5" Vented Prefabricated Enclosure

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Tru Spec Single 6.5” (1444OS)

Empty Single 6.5" Vented Prefabricated Enclosure

• 6.5" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 0.30 cubic feet
• Compatible for Sundown SA65V2 and similar subwoofers (Sold separately)

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List price $199.99
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Atrend 12SME

Empty Single 12" Sealed Shallow Subwoofer Enclosure

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Atrend 12SME

Empty Single 12" Sealed Shallow Subwoofer Enclosure

• 12" Single Sealed Shallow Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Ultra slim and shallow enclosure design
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 0.62 cubic feet

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• 12" Single Sealed Shallow Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Ultra slim and shallow enclosure design
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 0.62 cubic feet

Limited time!

NVX NE82S

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo

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NVX NE82S

Dual 8" Sealed 3/4" MDF Black Carpeted Subwoofer Enclosure – 0.80 Cu. Ft. with Polyfil and NVX Logo

• 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%!
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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

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Diamond Audio DES84 (Open Box, Great)

500W Peak (250W RMS) 8" DES Series Dual 4-ohm Car Subwoofer

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Diamond Audio DES84 (Open Box, Great)

500W Peak (250W RMS) 8" DES Series Dual 4-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 4 ohm
• Sensitivity: 82.1 dB

10% Off Open Box!
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• Peak Power: 500 watts
• RMS Power: 250 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 4 ohm
• Sensitivity: 82.1 dB

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Kicker CWRT674 (48CWRT674)

300W Peak (150W RMS) 6.75” CompRT Series Dual 4-ohm Shallow Car Subwoofer

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Kicker CWRT674 (48CWRT674)

300W Peak (150W RMS) 6.75” CompRT Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 300 watts
• RMS Power: 150 watts
• Impedance: Dual 4 ohm
• UV-Resistant Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 2-3/4"
• Sensitivity: 82.6 dB

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Sundown Audio NS v.6 D2 12" (NSV612D2)

7000W Peak (3500W RMS) 12" Nightshade Series Dual 2-ohm Car Subwoofer (SW-NSV612D2)

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Sundown Audio NS v.6 D2 12" (NSV612D2)

7000W Peak (3500W RMS) 12" Nightshade Series Dual 2-ohm Car Subwoofer (SW-NSV612D2)

• Peak Power: 7000 watts
• RMS Power: 3500 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Mega Roll V2 Surround
• Sensitivity: 83.15 dB

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Rockford Fosgate Punch P2 P2D2-8

500W Peak (250W RMS) 8" Punch Series Dual 2-ohm Car Subwoofer

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Rockford Fosgate Punch P2 P2D2-8

500W Peak (250W RMS) 8" Punch Series Dual 2-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Pulp Paper Cone
• Rubber Surround
• Mount depth: 4.76"
• Sensitivity: 83 dB

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