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2019 BMW X4

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Subwoofers and enclosures, specifically designed for your 2019 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 2019 BMW X4

A subwoofer that works with, or is designed for, your 2019 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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Diamond Audio DES82

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

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Diamond Audio DES82

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

• Peak Power: 500 watts
• RMS Power: 250 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 2 ohm
• Sensitivity: 82 dB

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$239.99

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NVX NE121P

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo

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NVX NE121P

Single 12" Slot Ported 3/4" MDF Black Carpeted Subwoofer Enclosure – 1.75 Cu. Ft. with Polyfil and NVX Logo

• 12" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Internal box volume: 1.75 cubic feet
• Premium Black Carpet with Black NVX Logo

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Rockford Fosgate Prime R2D2-10

500W Peak (250W RMS) 10" Prime Series Dual 2-ohm Car Subwoofer

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Rockford Fosgate Prime R2D2-10

500W Peak (250W RMS) 10" Prime Series Dual 2-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 2 ohm
• Mica Injected Polypropylene - MIPP Cone
• Poly-Foam Surround
• Mount depth: 4.319"
• Sensitivity: 87 dB

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Kicker L7T122 (46L7T122)

1200W Peak (600W RMS) 12" Solo-Baric L7T Series Dual 2-ohm Shallow Car Subwoofer

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Kicker L7T122 (46L7T122)

1200W Peak (600W RMS) 12" Solo-Baric L7T Series Dual 2-ohm Shallow Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohm
• SoloKon Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-1/8"
• Sensitivity: 86.54 dB

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Sundown Audio SA-12 Classic D4 12" (SA12CLD4)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL12D4)

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Sundown Audio SA-12 Classic D4 12" (SA12CLD4)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SACL12D4)

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper Cone
• Treated Foam Surround
• Mount depth: 6.5"
• Sensitivity: 84.22 dB

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JL Audio 10W6v3-D4

600W RMS 10" W6v3 Series Dual 4-ohm Car Subwoofer

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JL Audio 10W6v3-D4

600W RMS 10" W6v3 Series Dual 4-ohm Car Subwoofer

• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Mineral-Filled Polypropylene Cone
• Rubber Surround
• Mount depth: 6.89"
• Sensitivity: 82.7 dB

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Sundown Audio SA-6.5 SW D4 6.5" (SA65D4)

600W Peak (300W RMS) 6.5" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SA6.5SWD4)

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Sundown Audio SA-6.5 SW D4 6.5" (SA65D4)

600W Peak (300W RMS) 6.5" SA Classic Series Dual 4-ohm Car Subwoofer (SW-SA6.5SWD4)

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• Paper Cone
• Foam Surround
• Mount depth: 3.79"
• Sensitivity: 81.5 dB

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Kicker CWR122 (48CWR122)

1000W Peak (500W RMS) 12” CompR Series Dual 2-ohm Subwoofer

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Kicker CWR122 (48CWR122)

1000W Peak (500W RMS) 12” CompR Series Dual 2-ohm Subwoofer

• Peak Power: 1000 watts
• RMS Power: 250-500 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 5-3/4"
• Sensitivity: 86.9 dB

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JL Audio H.O. Wedge HO110-W6v3

600W Single 10" 10W6v3 Vented Enclosed Subwoofer System

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JL Audio H.O. Wedge HO110-W6v3

600W Single 10" 10W6v3 Vented Enclosed Subwoofer System

• 600W Single 10" Vented Subwoofer Enclosure
• 10" W6 Series Subwoofer
• 5/8" Medium Density Fiberboard with High-grade Automotive Carpet
• 2 Screw Terminals
• Enclosure Dimensions: 21-3/4" D x 12-1/4" W x 14" H

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Kicker CWRT104 (48CWRT104)

800W Peak (400W RMS) 10" CompRT Series Dual 4-ohm Shallow Car Subwoofer

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Kicker CWRT104 (48CWRT104)

800W Peak (400W RMS) 10" CompRT Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 800 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 3-7/16"
• Sensitivity: 84.8 dB

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Deaf Bonce Apocalypse DB-SA272 D2

3000W Peak (1500W RMS) 12” Apocalypse Series Dual 2-ohm Car Subwoofer

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Deaf Bonce Apocalypse DB-SA272 D2

3000W Peak (1500W RMS) 12” Apocalypse Series Dual 2-ohm Car Subwoofer

• Peak Power: 3000 watts
• RMS Power: 1500 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 7.07"
• Sensitivity: 86.20 dB

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SSV Works WP-US10

Loaded 300W RMS 10" Universal Subwoofer Enclosure with SSV Works Subwoofer

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SSV Works WP-US10

Loaded 300W RMS 10" Universal Subwoofer Enclosure with SSV Works Subwoofer

• Sealed enclosure with 1 10" Subwoofer
• 300 watts RMS (600 watts Peak)
• Includes plug and play wire harness kit
• Dimensions: 10" L x 12.28" H x 14.21" W

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• Sealed enclosure with 1 10" Subwoofer
• 300 watts RMS (600 watts Peak)
• Includes plug and play wire harness kit
• Dimensions: 10" L x 12.28" H x 14.21" W

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Kicker CWRT84 (48CWRT84)

600W Peak (300W RMS) 8" CompRT Series Dual 4-ohm Shallow Car Subwoofer

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Kicker CWRT84 (48CWRT84)

600W Peak (300W RMS) 8" CompRT Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 2-11/16"
• Sensitivity: 81.8 dB

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Kicker L7S122 (44L7S122)

1500W Peak (750W RMS) 12” Solo-Baric L7S Series Dual 2-ohm Subwoofer

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Kicker L7S122 (44L7S122)

1500W Peak (750W RMS) 12” Solo-Baric L7S Series Dual 2-ohm Subwoofer

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 6 13/16"
• Sensitivity: 86.90 dB

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List price $409.99
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AudioControl SPK-8S4

500W RMS 8" Spike Series Single 4-ohm High-Performance Car Subwoofer

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AudioControl SPK-8S4

500W RMS 8" Spike Series Single 4-ohm High-Performance Car Subwoofer

• RMS Power: 500 watts
• Impedance: Single 4 ohm
• Paper Fiber with Mica Coating Cone
• Rubber Surround
• Mount depth: 4.291"
• Sensitivity: 81.9876 dB

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Kicker L7X81 (49L7X81)

800W RMS 8" SoloX Series Dual 1-ohm Subwoofer

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Kicker L7X81 (49L7X81)

800W RMS 8" SoloX Series Dual 1-ohm Subwoofer

• RMS Power: 400 - 800 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 7-15/16"

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• RMS Power: 400 - 800 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 7-15/16"

Sony XS-W104GS

1500W Peak (350W RMS) 10" XS Series Single 4-ohm Car Subwoofer

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Sony XS-W104GS

1500W Peak (350W RMS) 10" XS Series Single 4-ohm Car Subwoofer

• Peak Power: 1500 watts
• RMS Power: 350 watts
• Impedance: Single 4 ohm
• Paper cone with Polypropylene cap
• Rubber surround
• Mount depth: 5-3/8"
• Sensitivity: 86 dB

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Atrend 12AME

Empty Single 12" Shallow Sealed Subwoofer Enclosure

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Atrend 12AME

Empty Single 12" Shallow Sealed Subwoofer Enclosure

• 12" Single Shallow Sealed Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Shallow construction and downward firing design
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 0.47 cubic feet

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Sundown Audio SA-12 Classic D2 12" (SA12CLD2)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL12D2)

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Sundown Audio SA-12 Classic D2 12" (SA12CLD2)

2000W Peak (1000W RMS) 12" SA Classic Series Dual 2-ohm Car Subwoofer (SW-SACL12D2)

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper Cone
• Treated Foam Surround
• Mount depth: 6.5"
• Sensitivity: 83.21 dB

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List price $407.99
-17% $339.99

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Alpine Status HDZ-W12

2400W Peak (800W RMS) 12" Status Series Dual 4-ohm Car Subwoofer

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Alpine Status HDZ-W12

2400W Peak (800W RMS) 12" Status Series Dual 4-ohm Car Subwoofer

• Peak Power: 2400 watts
• RMS Power: 800 watts
• Impedance: Dual 4 ohm
• Pulp/Mica Cone
• High-Amplitude Multi-Roll (HAMR) Surround
• Mount depth: 7-3/8"
• Sensitivity: 83.7 dB

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List price $1200.00
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