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Add deeper, more controlled bass to selected BMW 3 Series, 4 Series, M3 and M4 models with the Alpine DP2-80WF-B underseat subwoofer pair. These vehicle-specific 20cm speakers replace the compatible factory under-seat woofers while retaining the original installation locations. Bulletproof carbon-fibre cones and compact neodymium magnets deliver accurate, powerful bass, with 100W RMS, 200W peak power handling and a 35Hz–500Hz frequency response.
PLEASE NOTE: A separate amplifier is recommended to power these subwoofers.
Alpine Digital Precision Series
The Alpine DP2-80WF-B is a pair of vehicle-specific 20cm underseat subwoofers for selected BMW 3 Series, 4 Series, M3 and M4 models. They replace the compatible factory woofers and use the original under-seat locations to deliver deeper, stronger and more controlled bass without taking up boot space.
A separate amplifier is recommended to power these subwoofers.
Product Overview
BMW uses low-frequency speakers beneath the front seats to provide the bass foundation for the factory audio system. Although this arrangement saves space, original speakers can lack depth, control and impact, particularly at higher listening levels.
The Alpine DP2-80WF-B replaces compatible factory underseat woofers with a pair of high-performance 20cm subwoofers. They use the original floor locations, maintaining a discreet factory-style installation while improving low-frequency extension and bass definition.
Part of Alpine’s Digital Precision Series, these passive BMW subwoofers combine lightweight carbon-fibre cones with powerful neodymium magnets for fast response, controlled movement and strong output. A suitable separate amplifier is recommended to power the subwoofers and achieve their intended performance.
Key Benefits
Designed to use compatible original BMW woofer locations beneath the front seats for a discreet installation.
Two matching subwoofers provide consistent low-frequency performance across the front of the cabin.
Strong, lightweight diaphragms respond quickly and accurately for tighter, more controlled bass reproduction.
Powerful compact motor structures deliver strong performance within the restricted space beneath the seats.
Space-Saving Installation
The DP2-80WF-B uses the existing BMW under-seat woofer positions, so there is no large subwoofer enclosure taking up valuable boot space. Once installed, the upgrade remains hidden beneath the front seats and preserves the vehicle’s standard interior appearance.
Digital Precision Technology
The DP2-80WF-B is designed to deliver worthwhile low-frequency performance from the limited space available within BMW’s original under-seat installation locations.
The 8-inch cone area moves more air than smaller speakers, providing improved bass depth, presence and impact.
High rigidity and low moving mass support accurate response, reduced flex and controlled low-frequency reproduction.
A compact and powerful magnet structure provides the force required for strong bass without excessive installation depth.
The broad low-frequency range supports deep bass while integrating with compatible BMW midrange speakers.
Check Your Vehicle
Alpine officially lists the following BMW vehicles for the DP2-80WF-B:
| BMW Series | Model | Body Style | Production Dates |
|---|---|---|---|
| 3 Series | G20 | Saloon | November 2018–August 2024 |
| 3 Series | G21 | Touring | July 2019–July 2024 |
| M3 | G80 | Saloon | November 2020–July 2024 |
| M3 | G81 | Touring | November 2022–July 2024 |
| 4 Series | G22 | Coupé | July 2020–March 2024 |
| 4 Series | G23 | Convertible | November 2020–March 2024 |
| 4 Series | G26 | Gran Coupé | July 2021–July 2024 |
| M4 | G82 | Coupé | November 2020–July 2024 |
| M4 | G83 | Convertible | July 2021–March 2024 |
Further Details
| Product Type | Vehicle-specific passive subwoofers |
|---|---|
| Supplied Quantity | Pair |
| Woofer Size | 20cm / 8 inches |
| RMS Power Handling | 100 watts |
| Peak Power Handling | 200 watts |
| Frequency Response | 35Hz–500Hz |
| Cone Material | Carbon fibre |
| Magnet Material | Neodymium |
| Installation Location | Compatible original BMW under-seat woofer positions |
| Amplifier | Not included; separate amplifier recommended |
Two Alpine DP2-80WF-B 20cm vehicle-specific underseat subwoofers for compatible BMW installations. A separate amplifier is not included.
These are passive subwoofers and do not contain built-in amplifiers. Alpine recommends using a suitable separate amplifier to achieve the intended output, control and bass performance.
No. The DP2-80WF-B uses compatible original BMW woofer positions beneath the front seats, leaving the boot free for luggage and everyday use.
Yes. These subwoofers can be combined with compatible Alpine Digital Precision BMW door and centre speakers, along with suitable amplification and sound processing, to create a more complete vehicle-specific audio upgrade.
Expert Guidance
The DP2-80WF-B is ideal for BMW owners who want deeper and more controlled bass without installing a large enclosure in the boot. Because these are passive subwoofers, a separate amplifier is recommended and the amplifier choice and system setup will have a major effect on performance. For the best result, combine them with suitable amplification and matching BMW-specific front speakers, followed by careful crossover and level adjustment.
Upgrade Your BMW Bass
Choose the Alpine DP2-80WF-B for powerful vehicle-specific underseat bass, premium carbon-fibre construction and discreet BMW integration. A separate amplifier is recommended for optimum performance.
Brand: Alpine
Car models: The years stated refer to the model's years of manufacture, please check the item description for information about any changes there may be within these productions years.
BMW - 3 Series (G20/G21)* (2019 >)
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