
KW2 RX Receiver is a wireless adapter designed to connect subwoofers to the XIO soundbar
without the need for wires. This versatile device links XIO to KEF's wide range of subwoofers,
including KC62, KC92, KF92 and KUBE, allowing for optimal placement to enhance your
home entertainment experience. With high-quality wireless transmission, it captures every
detail of your favourite films and music. Additionally, KW2 RX Receiver connects to third-
party subwoofers via a 3.5mm Aux/optical combo output, providing you with the flexibility to
create a customised audio setup tailored to your preferences.
The compact KW2 RX Receiver is designed for functionality while maintaining a discreet profile.
It is powered directly by the KEF subwoofer expansion port, eliminating the need for an additional
KW2 RX Receiver operates in a reliable wireless frequency range, delivering high-resolution audio
up to 24bit/48kHz. Pairing the device is intuitive, and its range of up to 15 metres (line of sight)
allows for flexible subwoofer placement. With additional receivers, you can connect multiple
subwoofers to amplify the bass experience.
• Designed for XIO soundbar
• Works with KEF subwoofers wirelessly and
third-party subwoofers via 3.5mm Aux/optical
• Supports high-resolution audio up to
• Operates up to 15 metres (line of sight) for
optimal subwoofer placement
• Ability to connect to multiple subwoofers with
Visit: KEF.com for more about KEF and its products.
KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.
7. 2025 | KW2 RX Receiver
Dimensions (HWD) 72 x 37 x 31 mm (2.8 x 1.5 x 1.2 in.)
Radio frequency range 2400 MHz – 2483.5 MHz
Maximum radio frequency Power (EIRP) <10 dBm
Frequency response 20 Hz – 20 kHz
Signal-to-noise-ratio >80 dB
Maximum line of sight distance 15m from XIO
Total harmonic distortion <0.2 %
Outputs Proprietary analogue