Audison Prima APBMW S8-4.2 Pair 4ohm Plug & Play Under Seat Subwoofer BMW 150w
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The Audison Prima APBMW S8-4.2 is a pair of 200 mm (8") 4 ohm plug-and-play under-seat subwoofers for BMW and Mini, rated at 150 W continuous (300 W peak). They are direct OEM replacements designed to fit into the factory under-seat enclosures without modification, and are part of the Audison Prima range.
Key specifications
- Size: 200 mm (8")
- Power handling: 150 W continuous, 300 W peak
- Impedance: 4 ohm
- Frequency response: 40–500 Hz
- Sensitivity (SPL): 88 dB
- Magnet: neodymium
- Xmax: 7 mm
- Fs: 40 Hz; Vas: 21 l
- Fitment: direct OEM replacement for BMW and Mini under-seat speaker locations, using the factory enclosure
- Supplied as a pair, with two 5 mm gaskets included for OEM fitment
Audison Prima
Audison Prima is built for enthusiasts who want improved sound whilst keeping full OEM integration — prioritising clean installation with no compromise on space.
- Electroacoustic parameters developed specifically for BMW and Mini to deliver powerful, crisp low frequencies using the factory acoustic enclosure.
- Neodymium magnetic group with an inverted acoustic structure and internal cone — maximises performance whilst minimising bulk and weight.
- Voice coil wound on an aluminium former for effective power dissipation and stability at high excursions.
- Two 5 mm gaskets supplied for OEM placements.
The APBMW S8-4.2 drops straight into the factory under-seat location, making full use of the existing acoustic load to produce deep, crisp bass. The neodymium magnet delivers greater power and control than a ferrite equivalent without increasing installation depth. If you're also looking to upgrade your door speakers, the Audison Prima range includes the AP 8 8" midbass woofer pair for a matched system upgrade.
Explore the full range in Audison BMW Plug & Play.
Specification
| Power Handling | - Peak 300 W |
|---|---|
| Power Handling | - Continuous 150 W |
| Impedance | 4 Ohm |
| Frequency Response | 40-500 Hz |
| Magnet | Material NEODYMIUM |
| Voice Coil | Ø 50 mm |
| Voice Coil | Material COPPER |
| Cone | Material PRESSED PAPER CONE |
| Surround | Material RUBBER |
More specs
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What's Included
- Audison Prima APBMW S8 4ohm Subwoofers Pair
Audison
About the Audison APBMW S8-4.2
From our tech experts at CEN
A plug-and-play underseat subwoofer for BMW and Mini, using the factory location and wiring rather than taking up boot space, 4 ohm.
Who it suits
BMW and Mini owners who want the low end the factory system lacks without losing luggage space or cutting into the car.
Our tech experts advise
Fitment depends on model, year and factory audio specification, so we confirm before ordering. It still wants amplification and setting up against the front stage so it blends rather than thumps. Installation and tuning are priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Audison range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Audison
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Frequently Asked Questions
Q: Do I need an amplifier for this subwoofer?
A: Yes, unless it is an active (powered) subwoofer with a built-in amplifier. Passive subwoofers need an external amplifier matched to the RMS power and impedance shown in the Specification tab.
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: Which cars do the APBMW S8-4.2 subwoofers fit?
A: They are designed as a direct replacement for the OEM 200 mm speakers underneath the front seats of BMW and Mini models, using the factory box. Contact CEN with your registration to confirm fitment for your car.
Q: Do I need a separate enclosure for these subwoofers?
A: No. They are designed to work in the factory under-seat location and exploit the acoustic load provided by the factory box.
Q: What impedance and power are the APBMW S8-4.2?
A: Each subwoofer is 4 ohm, rated at 150 W continuous and 300 W peak power handling.
Q: Can CEN fit these subwoofers?
A: Yes. CEN offers professional installation from our Nottingham premises, including amplifier wiring. Contact us to book.
