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Complete your motorhome or campervan audio system with the Alpine SWC-D84L Adventure Audio subwoofer. Designed to harmonise perfectly with Alpine In-Cabin speakers, it delivers highly dynamic, balanced sound with powerful low-frequency performance. Its 8-inch dual voice-coil driver is housed in a compact sealed wooden enclosure, handling 160W RMS and 480W peak power. Designed for discreet installation behind a panel or inside a storage compartment.
PLEASE NOTE: A suitable external amplifier is required.
The Alpine Adventure Audio In-Cabin subwoofer SWC-D84L is designed to harmonise perfectly with Alpine In-Cabin speakers for highly dynamic and balanced sound reproduction in your motorhome or campervan. Its 8-inch dual voice-coil woofer is pre-installed inside a sturdy sealed enclosure for discreet installation behind an interior panel or inside a storage compartment.
The Alpine Adventure Audio In-Cabin subwoofer SWC-D84L is designed to harmonise perfectly with Alpine In-Cabin speakers for highly dynamic and balanced sound reproduction in your motorhome or campervan.
Compact cabin speakers are ideal for reproducing vocals and higher frequencies, but a dedicated subwoofer is needed to reproduce the deeper bass found in music. The SWC-D84L adds the low-frequency performance required for a fuller and more engaging listening experience.
Its compact sealed enclosure can be concealed behind a wall panel or inside a suitable storage compartment, allowing the system to deliver powerful bass without placing a large conventional subwoofer box in the living area.
The 20cm dual voice-coil woofer delivers powerful bass for motorhome, campervan and leisure-vehicle audio systems.
The woofer is supplied pre-installed inside a compact sealed wooden enclosure for controlled bass response.
Designed to fit behind an interior panel or inside a suitable storage compartment.
Dual 2-ohm voice coils provide flexible connection options for a compatible external amplifier.
A high-density wooden enclosure and die-cast front plate provide a rigid mounting structure.
The brushed steel grille and Alpine branding coordinate with the matching In-Cabin speaker range.
The 8-inch dual voice-coil woofer handles 160 watts RMS and up to 480 watts peak power. Its 30Hz–200Hz frequency response adds depth and impact that compact cabin speakers cannot reproduce alone.
The sealed enclosure helps produce controlled bass while keeping the overall dimensions compact enough for motorhome and campervan installations.
The subwoofer enclosure is constructed from high-density wood for strength and rigidity. A die-cast front plate provides a secure mounting surface for the woofer.
The brushed steel protective grille features Alpine branding, while a side-mounted connection terminal provides convenient access when wiring the subwoofer.
The SWC-D84L is designed for installation behind a suitable panel or inside a storage compartment. When correctly installed, only the external subwoofer grille remains visible inside the cabin.
Measuring 400 × 270 × 117mm, the enclosure can be incorporated into many motorhome and campervan interiors without occupying the main living space.
Alpine recommends powering the Adventure Audio In-Cabin speakers and SWC-D84L subwoofer with the PXE-C80-88 OPTIM8 DSP amplifier.
A compatible DSP amplifier provides the power, crossover control and sound tuning required to integrate the subwoofer correctly with the cabin speakers.
The SWC-D84L is designed to complement Alpine Adventure Audio In-Cabin speakers, including the short and long surface-mount and flush-mount models. The different speaker lengths, colours and mounting styles can be combined to suit the available installation spaces within the vehicle.
Add deep bass to a living-area audio system while keeping the enclosure concealed behind an interior panel.
Create fuller sound from a compact enclosure designed for space-conscious installations.
Complements Alpine surface-mount and flush-mount In-Cabin speakers for balanced full-range sound.
The SWC-D84L is a passive subwoofer and does not contain a built-in amplifier. A suitable external amplifier is required.
The subwoofer has dual 2-ohm voice coils. The voice coils must be connected in a configuration that is compatible with the amplifier’s supported impedance.
| Specification | Details |
|---|---|
| Product type | Passive enclosed motorhome subwoofer |
| Subwoofer size | 20cm / 8 inches |
| Enclosure type | Sealed wooden enclosure |
| Voice-coil configuration | Dual voice coil |
| Nominal impedance | 2 ohms + 2 ohms |
| RMS power handling | 160 watts |
| Peak power handling | 480 watts |
| Frequency response | 30Hz–200Hz |
| Sensitivity | 86dB at 1W/1m |
| Dimensions | 400mm × 270mm × 117mm |
| Front plate | Die-cast construction |
| Grille | Brushed steel grille with Alpine logo |
| Recommended installation | Behind a panel or inside a suitable storage compartment |
| Amplifier required | Yes – compatible external amplifier required |
No. The SWC-D84L is a passive subwoofer and requires a suitable external amplifier. The amplifier must support the final impedance created by the dual 2-ohm voice-coil wiring.
It is designed for concealed installation behind a suitable wall panel or inside a storage compartment in a motorhome or campervan. The grille should face into the cabin.
Yes. The SWC-D84L is designed to harmonise with Alpine Adventure Audio surface-mount and flush-mount In-Cabin speakers, adding the low-frequency output needed for balanced, highly dynamic sound reproduction.
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.
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