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2003 BMW 330xi

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Subwoofers and enclosures, specifically designed for your 2003 330xi, 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 2003 BMW 330xi

A subwoofer that works with, or is designed for, your 2003 BMW 330xi 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 BMW 330xi, 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 330xi, 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 330xi, 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)
S Series (43)
CompRT Series (42)
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Uno Series (1)
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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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Cerwin Vega VMAX8D4

1000W Peak (500W RMS) 8” VMAXX Series Dual 4-ohm Subwoofer

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Cerwin Vega VMAX8D4

1000W Peak (500W RMS) 8” VMAXX Series Dual 4-ohm Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Treated Semi-Pressed Pulped Cone
• Impedance: Dual 4 ohm
• Mount depth: 4.80"

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DS18 EXL-XX12.4DHE

4000W Peak (2000W RMS) 12" EXL-X Series Dual 4-ohm Car Subwoofer

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DS18 EXL-XX12.4DHE

4000W Peak (2000W RMS) 12" EXL-X Series Dual 4-ohm Car Subwoofer

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Paper Cone
• Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 7.87"
• Sensitivity: 87 dB

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Cerwin-Vega VMAX12D2

2000W Peak (1000W RMS) 12” VMAXX Series Dual 2-ohm Subwoofer

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Cerwin-Vega VMAX12D2

2000W Peak (1000W RMS) 12” VMAXX Series Dual 2-ohm Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Treated Semi-Pressed Pulped Cone
• Treated Foam Surround
• Mount depth: 6.6"
• Sensitivity: 84.8 dB

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Kicker CWRT674 (48CWRT674) - Pair

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

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Kicker CWRT674 (48CWRT674) - Pair

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

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

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

Deaf Bonce Machete MF-10S D4

1600W Peak (800W RMS) 10” Machete Series Dual 4-ohm Car Subwoofer

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Deaf Bonce Machete MF-10S D4

1600W Peak (800W RMS) 10” Machete Series Dual 4-ohm Car Subwoofer

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 4 ohm
• Mount depth: 5.63"
• Sensitivity: 84.1 dB

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PRV Audio RS8-SUBD4

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

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PRV Audio RS8-SUBD4

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

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Pressed Paper cone
• High Roll Foam surround
• Mount depth: 4.96"
• Sensitivity: 82 dB

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• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Pressed Paper cone
• High Roll Foam surround
• Mount depth: 4.96"
• Sensitivity: 82 dB

Kicker 52DCVR122

1800W Peak (900W RMS) Loaded Dual 12" Hatchback Vented Subwoofer Enclosure

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Kicker 52DCVR122

1800W Peak (900W RMS) Loaded Dual 12" Hatchback Vented Subwoofer Enclosure

• Ported enclosure with 2 12" CompVR Series Subwoofer
• 900 watts RMS (1800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 32-1/2" L x 15-15/16" H x 16-1/4" W x 19-1/2" W2

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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
• Impedance: Dual 2 ohm
• Treated Semi-Pressed Pulped Cone
• Rubber Surround
• Mount depth: 4.80"
• Sensitivity: 81.1 dB

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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

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Pioneer TS-D10LS2

1300W Peak (350W RMS) 10" D-Series Single 2-ohm Shallow Car Subwoofer

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Pioneer TS-D10LS2

1300W Peak (350W RMS) 10" D-Series Single 2-ohm Shallow Car Subwoofer

• Peak Power: 1300 watts
• RMS Power: 350 watts
• Impedance: Single 2 ohm
• IMPP - Aramid Fiber and Carbon Fiber Cone
• Rubber Surround
• Mount depth: 3-1/4"
• Sensitivity: 74 dB

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• Peak Power: 1300 watts
• RMS Power: 350 watts
• Impedance: Single 2 ohm
• IMPP - Aramid Fiber and Carbon Fiber Cone
• Rubber Surround
• Mount depth: 3-1/4"
• Sensitivity: 74 dB

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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Kicker CVR152 (52CVR154)

1400W Peak (700W RMS) 15" CompVR Series Dual 4-ohm Subwoofer

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Kicker CVR152 (52CVR154)

1400W Peak (700W RMS) 15" CompVR Series Dual 4-ohm Subwoofer

• Peak Power: 1400 watts
• RMS Power: 700 watts
• Impedance: Dual 4 ohm
• Injection Molded Polypropylene Cone
• Rubber Surround
• Mount depth: 8-3/16"
• Sensitivity: 89.2 dB

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Alpine W-DB12V

1500W Peak (500W RMS) Loaded Dual 12" Vented Subwoofer Enclosure

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Alpine W-DB12V

1500W Peak (500W RMS) Loaded Dual 12" Vented Subwoofer Enclosure

• Ported enclosure with 2 12" Bass Series Subwoofer
• 250 watts RMS each (750 watts Peak each)
• Final Impedance: 2-ohm
• Dimensions: 34-1/2" L x 17-1/2" H x 20-1/2" W

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• Ported enclosure with 2 12" Bass Series Subwoofer
• 250 watts RMS each (750 watts Peak each)
• Final Impedance: 2-ohm
• Dimensions: 34-1/2" L x 17-1/2" H x 20-1/2" W

Orion HCCA152

10000W Peak (2500W RMS) 15" HCCA Series Dual 2-ohm Car Subwoofer

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Orion HCCA152

10000W Peak (2500W RMS) 15" HCCA Series Dual 2-ohm Car Subwoofer

• Peak Power: 10000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• UV-Resistant Polypropylene Cone
• Nitrile Butadiene Rubber (NBR)-Foam Surround
• Mount depth: 11.575"
• Sensitivity: 87.2 dB

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• Peak Power: 10000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• UV-Resistant Polypropylene Cone
• Nitrile Butadiene Rubber (NBR)-Foam Surround
• Mount depth: 11.575"
• Sensitivity: 87.2 dB

Cerwin Vega H7124S

1200W Peak (200W RMS) 12" HED Series Single 4-ohm Subwoofer

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Cerwin Vega H7124S

1200W Peak (200W RMS) 12" HED Series Single 4-ohm Subwoofer

• Peak Power: 1200 watts
• RMS Power: 200 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Polypropylene Cone
• Stitched Rubber Surround
• Mount depth: 5.35"
• Sensitivity: 87.0 dB

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Diamond Audio DES124

1000W Peak (500W RMS) 12" DES Series Dual 4-ohm Car Subwoofer

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Diamond Audio DES124

1000W Peak (500W RMS) 12" DES Series Dual 4-ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Fiber-Reinforced High Strength Paper Cone
• Impedance: Dual 4 ohm
• Sensitivity: 82.8 dB

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Kenwood eXcelon P-XRW102DB

1300W Peak (300W RMS) Loaded Single 10" Sealed Enclosure

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Kenwood eXcelon P-XRW102DB

1300W Peak (300W RMS) Loaded Single 10" Sealed Enclosure

• Sealed enclosure with 1 10" Excelon Reference Series Subwoofer
• 300 watts RMS (1300 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 20" L x 8.5" H x 15" W

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Kicker CWCS84 (50CWCS84)

400W Peak (200W RMS) 8" CompC Series Single 4-ohm Car Subwoofer

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Kicker CWCS84 (50CWCS84)

400W Peak (200W RMS) 8" CompC Series Single 4-ohm Car Subwoofer

• Peak Power: 400 watts
• RMS Power: 100-200 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene Cone
• Ribbed Polyurethane Surround
• Mount depth: 4-3/16"
• Sensitivity: 83.3 dB

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Sundown Audio SML-10 D4 10" (SML10D4)

1200W Peak (600W RMS) 10" SML Series Dual 4-ohm Shallow Car Subwoofer (SW-SML10D4)

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Sundown Audio SML-10 D4 10" (SML10D4)

1200W Peak (600W RMS) 10" SML Series Dual 4-ohm Shallow Car Subwoofer (SW-SML10D4)

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Pressed Paper cone
• Pressed Foam surround
• Mount depth: 3.78"
• Sensitivity: 85.8 dB

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Universal Icon Universal – fits most vehicles.

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List price $263.99
-9% $239.99

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    FAQ for Subwoofer and Sub Box Upgrades in 2003 330xi

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 2003 BMW 330xi?

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