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2018 Ford Focus

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Subwoofers and enclosures, specifically designed for your 2018 Focus, as well as universal fit solutions

Overview Upgrade your Stereo 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 2018 Ford Focus

A subwoofer that works with, or is designed for, your 2018 Ford Focus 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 Focus.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your Ford Focus, 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 Ford Focus, 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 Ford Focus, 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 (43)
S Series (42)
W3 v3 Series (40)
CompR Series (39)
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SA Series (35)
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U Series (18)
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Z Series (18)
Reference Series (16)
TW3 Shallow Mount Series (16)
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Polk Audio MM1 Series (2)
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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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Rockford Fosgate Prime R2 R2SD4-12

500W Peak (250W RMS) 12" Prime Series Dual 4-ohm Shallow Car Subwoofer

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Rockford Fosgate Prime R2 R2SD4-12

500W Peak (250W RMS) 12" Prime Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Dual 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Poly-Foam Surround
• Mount depth: 3.602"
• Sensitivity: 85 dB

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Kicker VCWC122 (50VCWC122)

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

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Kicker VCWC122 (50VCWC122)

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

• Ported enclosure with 1 12" CompC Series Subwoofer
• 150-300 watts RMS (600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 20" L x 16" H x 11-3/8" W x 14-1/2" W2

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NVX - Worth the Envy - Direct to Consumer Car Audio

Sundown Audio U-8 D4 8" (U8D4)

1500W Peak (750 RMS) 8" U Series Dual 2-ohm Car Subwoofer (SW-UV18D4)

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Sundown Audio U-8 D4 8" (U8D4)

1500W Peak (750 RMS) 8" U Series Dual 2-ohm Car Subwoofer (SW-UV18D4)

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 6.02"
• Sensitivity: 81.6 dB

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Atrend 8KSV

Empty Single 8" SPL Vented Enclosure for Kicker L7R and L7S Series Subwoofers

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Atrend 8KSV

Empty Single 8" SPL Vented Enclosure for Kicker L7R and L7S Series Subwoofers

• 8" Single SPL Ported Subwoofer Enclosure
• Fits Kicker L7R and L7S series subwoofers
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium charcoal carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 1.05 cubic feet

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JL Audio PowerWedge TW3 CS112LG-TW3

400W RMS Loaded Single 10" Sealed Shallow Enclosure

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JL Audio PowerWedge TW3 CS112LG-TW3

400W RMS Loaded Single 10" Sealed Shallow Enclosure

• Sealed shallow enclosure with 1 12" TW3 Shallow Mount Series Subwoofer
• 400 watts RMS
• Final Impedance: 2-ohm
• Dimensions: 23.75" L x 15.625" H x 5.0625" W

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Cerwin-Vega VMAX8D2

1000W Peak (500W RMS) 8" VMAXX Series Dual 2-ohm Subwoofer

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Cerwin-Vega VMAX8D2

1000W Peak (500W RMS) 8" VMAXX Series Dual 2-ohm Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Treated Semi-Pressed Pulped Cone
• Treated Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 4.8"
• Sensitivity: 81.1 dB

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Cerwin Vega VMAX8D2

1000W Peak (500W RMS) 8” VMAXX Series Dual 2-ohm Subwoofer

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Cerwin Vega VMAX8D2

1000W Peak (500W RMS) 8” VMAXX Series Dual 2-ohm Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 2 ohm
• Treated Semi-Pressed Pulped Cone
• Rubber Surround
• Mount depth: 4.80"
• Sensitivity: 81.1 dB

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Alpine SS-SB10

300W RMS Loaded Single 10" Sealed Shallow Enclosure

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Alpine SS-SB10

300W RMS Loaded Single 10" Sealed Shallow Enclosure

• Sealed shallow enclosure with 1 10" S Series Subwoofer
• 300 watts RMS Power Rating
• Final Impedance: 2-ohm
• Dimensions: 18.5" L x 4.5" H x 12.5" W

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Rockford Fosgate Punch P1 P1S2-15

500W Peak (250W RMS) 15" Punch Series Single 2-ohm Car Subwoofer

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Rockford Fosgate Punch P1 P1S2-15

500W Peak (250W RMS) 15" Punch Series Single 2-ohm Car Subwoofer

• Peak Power: 500 watts
• RMS Power: 250 watts
• Impedance: Single 2 ohm
• Kevlar Reinforced Pulp Paper Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 6.98"
• Sensitivity: 87 dB

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Alpine RS-SB12

1800W Peak (600W RMS) Loaded Single 12" Sealed Shallow Enclosure

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Alpine RS-SB12

1800W Peak (600W RMS) Loaded Single 12" Sealed Shallow Enclosure

• Sealed shallow enclosure with 1 12" R-Series Subwoofer
• 600 watts RMS (1800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 17" L x 5.25" H x 26.5" W

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MTX SLH12X2S

Empty Dual 12" Ported Square Sledgehammer Enclosure

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MTX SLH12X2S

Empty Dual 12" Ported Square Sledgehammer Enclosure

• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 2.66 cubic feet
• Mounting hardware included

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Wet Sounds ZERO 10 SUB KIT-S2

600W Peak (300W RMS) Loaded Single 10" Sealed Marine Enclosure

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Wet Sounds ZERO 10 SUB KIT-S2

600W Peak (300W RMS) Loaded Single 10" Sealed Marine Enclosure

• Sealed enclosure with 1 10" Zero Series Subwoofer
• 300 watts RMS (600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 18" L x 14" H x 5.71" W x 8.81" W2

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• Sealed enclosure with 1 10" Zero Series Subwoofer
• 300 watts RMS (600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 18" L x 14" H x 5.71" W x 8.81" W2

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Rockford Fosgate Punch P1 P1-1X10

500W Peak (250W RMS) Punch P1 Series Single 10" Ported Loaded Subwoofer Enclosure

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Rockford Fosgate Punch P1 P1-1X10

500W Peak (250W RMS) Punch P1 Series Single 10" Ported Loaded Subwoofer Enclosure

• Preloaded with single 10" Punch P1 (P1S4-10)
• Frequency Response: 23 - 250 Hz
• Xmax: 9.0mm
• Hatchback-style Sealed Enclosure
•Custom engineered to optimize P1 driver

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Pioneer TS-Z10LS4

1300W Peak (400W RMS) 10" Z-Series Single 4-ohm Shallow Car Subwoofer

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Pioneer TS-Z10LS4

1300W Peak (400W RMS) 10" Z-Series Single 4-ohm Shallow Car Subwoofer

• Peak Power: 1300 watts
• RMS Power: 400 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene Cone
• Rubber Surround
• Mount depth: 3-1/4"
• Sensitivity: 76 dB

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• Peak Power: 1300 watts
• RMS Power: 400 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene Cone
• Rubber Surround
• Mount depth: 3-1/4"
• Sensitivity: 76 dB

DS18 EXL-X12.2D

2500W Peak (1250W RMS) 12" EXL-X Series Dual 2-ohm Car Subwoofer

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DS18 EXL-X12.2D

2500W Peak (1250W RMS) 12" EXL-X Series Dual 2-ohm Car Subwoofer

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Non-Pressed Paper Cone
• Foam Surround
• Impedance: Dual 2 ohm
• Mount depth: 7"
• Sensitivity: 88 dB

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DS18 ZXI6.4D

600W Peak (300W RMS) 6.5" ZXI Series Dual 4-ohm High Excursion Subwoofer

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DS18 ZXI6.4D

600W Peak (300W RMS) 6.5" ZXI Series Dual 4-ohm High Excursion Subwoofer

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• Non-Pressed Paper Cone
• Foam Surround
• Mount depth: 4.41"
• Sensitivity: 87 dB

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• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• Non-Pressed Paper Cone
• Foam Surround
• Mount depth: 4.41"
• Sensitivity: 87 dB

Atrend 8RPD

Empty Dual 8" Vented Enclosure for Rockford Fosgate P2 and P3 Series Subwoofers

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Atrend 8RPD

Empty Dual 8" Vented Enclosure for Rockford Fosgate P2 and P3 Series Subwoofers

• 8" Dual Ported Subwoofer Enclosure
• Fits Rockford Fosgate P2 and P3 series subwoofers
• 3/4" 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: 5.326 cubic feet

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EXCLUSIVE

Massive Audio GTR122

1500W Peak (1000W RMS) 12" GTR Series Dual 2-ohm Car Subwoofer

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Massive Audio GTR122

1500W Peak (1000W RMS) 12" GTR Series Dual 2-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Textured Non-Pressed Pulp with Resin Cone
• High Roll Foam Surround
• Sensitivity: 84.5 dB

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List price $292.45
-25% $219.99

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DC Audio Level 3 12M4D2 (M4LV311D2)

2000W Peak (1000W RMS) 12" Level 3 Series M4 Version Dual 2-ohm Car Subwoofer

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DC Audio Level 3 12M4D2 (M4LV311D2)

2000W Peak (1000W RMS) 12" Level 3 Series M4 Version Dual 2-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Non-Pressed Paper cone
• Multi-layered Polymer Foam surround
• Mount depth: 6.75"
• Sensitivity: 85 dB

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AudioControl SPC-W10

600W Peak (400W RMS) Loaded Single 10" Sealed Truck Enclosure

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AudioControl SPC-W10

600W Peak (400W RMS) Loaded Single 10" Sealed Truck Enclosure

• Sealed truck enclosure with 1 10" Space Series Subwoofer
• 400 watts RMS (600 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 19.10" L x 12.36" H x 4.095" W x 6.276" W2

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