Focal SUB 30 KXE K2 Power Series 12 Inch 30cm Subwoofer Bass Driver 800w RMS
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The Focal SUB 30 KXE is a 12-inch (30cm) subwoofer driver from the K2 Power series, rated at 800W RMS. It features Focal's K2 sandwich cone, a dual 4-ohm voice coil motor, and is manufactured in Focal's own workshops in France.
Key specifications
- Size: 12-inch (300mm)
- Power handling: 800W RMS, 1,600W max
- Impedance: 2 x 4 ohms (dual voice coil)
- Sensitivity: 86.5 dB (2.83V/1m)
- Frequency response: 25 Hz to 500 Hz
- Cone: K2 sandwich
- Depth: 172mm
K2 Power SUB 30 KXE 12-inch (30cm) subwoofer
A flagship 12-inch subwoofer from Focal's K2 Power series, built for high output and long-term reliability. Fitted with Focal's K2 membrane, it offers high power handling and suits sealed or bass reflex enclosure builds.
Exceptional bass
The K2 diaphragm combines rigidity, lightness and damping for precise, dynamic bass. SPL output is suited to both sealed and bass reflex applications.
Focal know-how
The rigid, non-magnetic frame with its exclusive profile allows optimum excursion. The double voice coil motor delivers greater linearity and consistent power handling.
Optimised wiring
The terminal block uses a push-button connector, making wiring and installation straightforward.
Explore the full range in Focal K2 Power.
Specification
| Sensitivity | (2.83V/1m) 86.5dB |
|---|---|
| Frequency response | 25Hz – 500Hz |
| Impedance | 2 x 4Ω |
| Cone | K2 Sandwich |
| Voice coil | diameter 11/4" (65mm) |
More specs
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What's Included
- Focal SUB 30 KXE
Focal
About the Focal SUB30KXE
From our tech experts at CEN
A Focal K2 Power 12 inch subwoofer, handling 800w RMS.
Who it suits
Drivers building a system where the bass has to keep pace with a capable front stage. K2 Power is Focal’s long-running aramid-fibre range, the one enthusiasts recognise by the yellow cone.
Our tech experts advise
A subwoofer is only as good as its enclosure and the amplifier behind it: volume and tuning decide what you hear. We build enclosures to suit both driver and vehicle at our Beeston workshop. Installation is 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 Focal range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Focal
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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.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
Focal Car Audio
To combine the pleasure of driving with the love of sound, make sure your car is fitted with quality hi-fi equipment. Focal high-fidelity sound promises sensational musical emotions to enhance every journey.
Speaker Kits
With Focal's dedicated car speakers, take advantage of a wide choice of models to compose your own customized audio system, according to your vehicle and your desires. From the Focal discovery with the Universal range to the Utopia M excellence, listening in the car takes on a whole new dimension
Subwoofer
Choose one of Focal's subwoofers (passive, active, bass-reflex, ultra-flat...) and bring powerful, deep bass. Offering a variety of models in different formats, our range meets every installation need and is the ideal audio complement.
DSP & Amplifiers
To optimize the sound quality of your installation and enhance in-car listening, we offer a range of amplifiers and DSPs to match your loudspeakers. These Focal electronics let you experience the sensations of precise, controlled and stable sound.
Accessories & Cables
Discover Focal's range of amplifiers and cables for a complete solution. As a complement to your installation, amplifiers let you experience the sensations of precise, controlled sound, and cables answer questions linked to amplification and connections between components.
Focal Car Audio
Deliver exceptional sound clarity and precision for your vehicle
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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 size enclosure does this subwoofer need?
A: The recommended enclosure volume is listed in the Specification tab where the manufacturer provides it. As a rule, sealed enclosures give tighter, more accurate bass while ported enclosures deliver more output. Contact CEN if you would like a recommendation for your build.
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: Sealed or ported enclosure - which should I choose?
A: Sealed boxes are compact and produce tight, controlled bass suited to sound quality builds. Ported boxes are larger and produce more output at low frequencies, suited to those who want maximum impact. Either works well when built to the recommended volume.
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: How much power does the Focal SUB 30 KXE need?
A: It is rated at 800W RMS nominal and 1,600W maximum. Match it to an amplifier delivering around its RMS rating at the impedance you wire it to.
Q: What impedance is the Focal SUB 30 KXE?
A: It has a dual voice coil rated at 2 x 4 ohms, so it can be wired to 2 ohms (parallel) or 8 ohms (series) to suit your amplifier.
Q: What enclosure type suits the SUB 30 KXE?
A: Focal states the subwoofer is suited to both sealed (closed volume) and bass reflex applications.
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