Alpine SWC-D84S Subwoofer Stealth Shallow Mount Sub for Fiat Ducato III 75w RMS
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The Alpine SWC-D84S is a 20cm shallow-mount, dual voice coil subwoofer in a sealed enclosure designed to fit the centre console of the Fiat Ducato III (250/290), Citroën Jumper II (250) and Peugeot Boxer II (250), with 75W RMS / 250W peak power handling and a plug-and-play ISO wiring kit included.
Key specifications
- Subwoofer: 20cm flat, dual voice coil (2 + 2 ohms)
- Power handling: 75W RMS / 250W peak
- Frequency response: 30Hz – 200Hz
- Enclosure: Sealed, fits centre console below the cup-holder
- Included: Steel mounting bracket, ISO adapter, low-pass filter cable
- Vehicles: Fiat Ducato III (250/290), Citroën Jumper II (250), Peugeot Boxer II (250)
Overcoming Limitations
The Fiat Ducato cabin lacks internal door sound-proofing, causing significant vibration noise and letting audio carry easily to neighbouring vehicles. The SWC-D84S slots into the centre console to deliver deeper, cleaner bass while minimising these issues.
20cm Shallow Subwoofer
The 20cm shallow-type, dual voice coil (2 Ohm + 2 Ohm) subwoofer handles 250W peak and connects directly to the two rear channels of your original or aftermarket radio. Rear speakers can remain connected in parallel. For stronger bass output, the SWA-150KIT Power Amplifier Kit is the recommended upgrade. You can also add the Alpine RUX-KNOB2 remote bass level control for convenient adjustment from the driver's seat.
Perfect Installation
The included steel bracket mounts to the centre console structure below the original cup-holder. The sealed subwoofer enclosure slides in from the front and sits flush within the console. Note: the original cup-holder is mandatory for installation and must be fitted — it can be purchased separately from the vehicle manufacturer if not already present.
Vehicle Compatibility
The SWC-D84S is compatible with Fiat Ducato III, Citroën Jumper II and Peugeot Boxer II motorhomes and vans. The original centre console cup-holder must be present.
Included Plug-and-Play Wiring Kit
The SWC-D84S includes an ISO cable kit for head unit connection, using the two rear channels to drive the subwoofer. A low-pass filter cable is also included to limit the bandwidth frequency sent to the subwoofer.
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Specification
| Peak Power | 250 Watts |
|---|---|
| RMS Power | 75 Watts |
| Frequency response | 30Hz – 200Hz |
| Impedance | Dual 2 Ohm |
More specs
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What's Included
- Included steel mounting bracket for center console installation
- Included ISO adapter for adaption to the radio
- Includes low-pass filter cable
Alpine
About the Alpine SWC-D84S
From our tech experts at CEN
A subwoofer enclosure shaped for the Fiat Ducato, designed to use the space under the seat or in the void rather than taking up load area.
Who it suits
Fiat Ducato owners who want bass without losing usable space. On vans and campers this is nearly always the right answer, because a boot box is not an option.
Our tech experts advise
The enclosure is only part of it: the sub still needs amplification and setting up against the rest of the system. Fitment varies by model year and seat type, so get in touch to confirm before ordering. See car audio installation.
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
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Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
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Frequently Asked Questions
Q: What does RMS power mean?
A: RMS is the continuous power a subwoofer can handle, and it is the number that matters when matching an amplifier. Peak or max figures describe short bursts only. Match your amplifier output to the RMS rating in the Specification tab.
Q: Can CEN build or supply an enclosure and fit everything?
A: Yes. CEN supplies enclosures and offers professional installation from our Nottingham premises, including amplifier wiring. Contact us to discuss your build.
Q: Does the SWC-D84S need an amplifier?
A: No. It connects to the 2 rear channels of your original or aftermarket radio, and you can keep using rear speakers in parallel. The SWA-150KIT amplifier kit is recommended for stronger bass and dynamics.
Q: Is the cup-holder needed to fit the SWC-D84S?
A: Yes. The original cup-holder in the centre console is mandatory. It can be bought separately from the vehicle manufacturer and retro-fitted.
Q: Which vans and motorhomes does the SWC-D84S fit?
A: The Fiat Ducato III (250 from 06/2006, facelift 2011 - 2014, and 290 from 2014), Citroën Jumper II (250) and Peugeot Boxer II (250). If you own a liner motorhome, please check compatibility before purchase.
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