SUB 25 KXS

25 cm shallow depth subwoofer

$1,230.00

(Price Each)

Key Features & Specifications

Key Features

  • Made in France – crafted in Focal’s acoustic engineering workshops

  • 10″ (250 mm) shallow subwoofer – high-performance design for limited-space installs

  • Aramid fibre K2 cone – rigid, lightweight, and ultra-responsive

  • Progressive spider – enhanced linearity and dynamic control

  • Special rubber surround – reliable long-throw suspension

  • Aluminium chassis – non-magnetic, rigid frame for high excursion

  • Integrated ferrite motor unit – powerful drive and increased efficiency

  • Coil ventilation system – thermal stability under high load

  • Push terminal block – fast, secure wiring

  • Engraved serial number – authentic K2 Power craftsmanshi

Sound Acoustics

  • Product type : Subwoofer
  • Membrane : K2 Power
  • Filter : Integrated
  • Frequency response (+/- 3dB) : 25 Hz – 500 Hz
  • Maximum power : 700 watts
  • Motor : Ferrite
  • Nominal Impedance : 4 Ω
  • Nominal power : 350 W RMS
  • Sensivity : 84.5 dB
  • Suspension material : Butyl

Design

  • Product Depth: 94 mm

Grilles

No

Why Choose Focal Australia

Click & Collect Available

Click & Collect available from participating Authorised Focal Australia Dealers.

Official Australian Stock

Official Australian stock supplied through the Authorised Focal Australia Dealer Network.

Vehicle-Specific Solutions

Vehicle-specific installation solutions available for thousands of vehicles.

Nationwide Authorised Dealers

Nationwide Authorised Dealer Network for sales, advice, installation and after-sales support.

Australia-Wide Shipping

Australia-wide shipping available through our network of Authorised Focal Australia Dealers.

12-Month Australian Warranty

Backed by a 12-month Australian warranty, extended to 3 years when installed by an Authorised Focal Australia Dealer.

Expert Installation Available

Expert installation available through our Australia-wide Authorised Dealer Network.

Technologies

K2 SANDWICH MEMBRANE

Purity and precision of sound

The diaphragm, the key component of a loudspeaker, is at the heart of our acoustic engineers’ research. Shape and materials are essential for high-fidelity reproduction. In 1986, our teams unveiled an aramid fibre sandwich membrane, recognizable by its unique yellow color. It has been extensively renewed over the years, while retaining the characteristics that made it such a success. Today, it consists of an ultra-light foam core sandwiched between a layer of aramid fibre and a layer of glass fibre. It combines the three key factors of a loudspeaker membrane: rigidity, lightness and damping, for a precise, dynamic and uncolored sound.

TMD SUSPENSION

Stabilized surround, eliminates vibrations

While our engineers are experts in the development of exclusive diaphragms, they also innovate in all the components that make up the loudspeakers, such as the surround that connects the diaphragm to the frame, the performance of which must be mastered. Introduced in 2015, Tuned Mass Damper (TMD) technology with harmonic damping consists of the addition of finely positioned toroidal weights to stabilize the surround for even greater sonic neutrality. This technology enhances the midrange and the erratic behavior of the surround between 1 kHz and 2 kHz.

Discover

SUB 25 KXS | 10″ Shallow Subwoofer – Focal K2 Power Series

Massive Bass. Minimal Depth.

The Focal SUB 25 KXS is the latest evolution of Focal’s legendary K2 Power Series, engineered for pure impact and precision even where space is limited. Crafted in France, this 10″ (250 mm) subwoofer integrates Focal’s aramid fibre K2 cone and a shallow-mount design, achieving exceptional low-frequency power in a compact, installation-friendly form.

With its robust construction, high-excursion suspension, and refined acoustic geometry, the SUB 25 KXS unleashes tight, controlled bass that transforms every drive into a dynamic, high-fidelity listening experience.


K2 Power Cone – Strength Meets Sensitivity

The signature aramid fibre K2 sandwich cone lies at the heart of the SUB 25 KXS. Combining stiffness, low mass, and ideal damping, it delivers deep, articulate bass with incredible speed and detail. This exclusive Focal material is known for its dynamic sound signature, faithfully reproducing every note with authority and precision.


Shallow Depth – No Compromise Performance

Designed to fit tight factory enclosures or slim custom builds, the SUB 25 KXS maintains maximum power handling and output efficiency while reducing mounting depth. Its integrated ferrite motor unit and ventilated coil system keep the sub cool and consistent, even under extreme SPL demands.


Tuned for Control and Durability

Focal’s progressive-profile spider provides linear cone movement and superb damping, ensuring the sub remains accurate and stable at any volume.
A special rubber surround enhances excursion and long-term reliability, delivering years of distortion-free bass performance.


The K2 Legacy Redefined

The SUB 25 KXS delivers the unmistakable energy and realism of the Focal K2 Power Series in a shallow-mount format. Its blend of engineering precision, acoustic muscle, and installation flexibility makes it the ideal subwoofer for high-performance systems where space is at a premium.

Focal SUB 25 KXS – Shallow Depth. Infinite Power.

10 Reasons Focal Stands Apart

For more than four decades, Focal has combined French acoustic engineering, innovative speaker technologies and premium materials to create exceptional car audio systems.

Discover the engineering, heritage and technology behind one of the world’s leading car audio brands.

Explore the Top 10 Reasons to Choose Focal Car Audio