KEF Landscape P6Q 6.5” Uni-Q Satellite 4.1 Outdoor Speaker System with KASA 4-250M Amplifier

Stock expected December 2026 - Pre-order now!

Each package includes 4 x SR6Q, 1 x BL12b and 1 x KASA 4-250M 

For more than six decades, KEF has been driven by a pursuit of acoustic excellence. Now, that same devotion breathes into the open air. Building on the groundbreaking technologies behind our award-winning HiFi speakers, KEF Outdoor Speakers are engineered to enrich every outdoor moment with the power of high-fidelity sound, bringing music and movies from indoors to outdoors without compromise.

Landscape P6Q 4.1 outdoor system delivers powerful, full bodied sound with greater scale and definition across expansive outdoor environments. Four SR6Q 6.5" Uni-Qe landscape satellites pair with the 12" BL12b bollard subwoofer, powered by the KASA 4-250M network DSP amplifier, to deliver superior acoustic control, extended dynamics, and precise system tuning.

Featuring KEF's signature Uni-Q® technology, the system creates a spacious, immersive soundstage with wide, even coverage across larger outdoor environments. Designed for expansive spaces, Landscape P6Q offers the flexibility to expand into an 8.2 configuration or scale further to suit larger outdoor areas as your needs evolve.

Designed to excel in all outdoor conditions, the speakers are UV-resistant and weather sealed to withstand intense sunlight, heavy rain, coastal salt, and extreme temperatures, ensuring pristine sound season after season.

Uni-Q® technology: precision-engineered for outdoors
For the first time, KEF's renowned Uni-Qe technology is available in an outdoor speaker range. The bespoke weatherproof 6.5-inch Uni-Q® driver arrays are optimised for open-air environments, ensuring weather resistance without compromising performance.

By positioning the tweeter precisely at the acoustic centre of the bass and midrange cone, Uni-Q technology creates a single point source that delivers smooth, even sound dispersion. The result is a controlled, wide sound field that immerses everyone in high-fidelity sound, wherever they are in the outdoor space.

Powerful bass beyond walls
BL8b Bollard Subwoofer features 8-inch long-throw drivers engineered for powerful, articulate low-frequency reproduction. An expertly tuned acoustic system achieves exceptional air-volume displacement while minimising distortion. The acoustically optimised design delivers consistent, full-bodied bass even in expansive outdoor spaces.

Built for all-weather durability
Engineered for year round durability, KEF's outdoor speakers are housed in rugged, robust enclosures designed for long-lasting performance. Each speaker features an aluminium grille that shields the drivers from outdoor exposure, while the UV-resistant design ensures resilience against prolonged sunlight exposure.

Withstanding temperatures from-25C to +70C and enduring over 500 hours of salt spray testing, the BL8b and BL12b are built to thrive in extreme conditions and perform reliably in even the most demanding outdoor environments.

Easy placement, seamless integration
Designed for maximum placement flexibility, KEF outdoor speakers offer a variety of mounting options to suit different outdoor environments. The landscape satellites can be installed using ground stakes for placement within garden beds and landscaped areas, or mounted on walls, eaves, or trees using surface mounts. The subwoofer can be positioned securely with ground stakes, with the option to partially bury the base for a more discreet appearance. For hard surfaces such as patios, decks, or concrete areas, hardscape mounts provide a stable and reliable installation solution.

Expertly tuned, elegantly crafted
Precisely tuned to KEF's unparalleled standards, KEF outdoor speakers are crafted to blend effortlessly into natural surroundings with a smooth, understated silhouette and a minimalist form. The tone-on-tone aluminium grille not only provides a premium finish but also enables wider sound dispersion, delivering an immersive listening experience across open spaces.

Amplified for high-fidelity
Built with precision for high-performance amplification, KASA 4-250M delivers exceptional efficiency and outstanding signal purity, enabled by advanced Class-D amplification enhanced by next-generation GaN technology. Powered by KEF's Music Integrity Engine (MIE) and premium AKM Velvet Sound DAC/ADC architecture, it drives KEF speakers with exacting accuracy for natural, detailed, and immersive sound. Supporting single-ended or bridged operation into 4- or 8-ohm loads, KASA 4-250M adapts effortlessly from focused listening zones to large-scale multi-zone installations.

SR6Q
6.5” Uni-Q driver array for accurate and pristine sound with even dispersion
Rugged, robust construction for all-weather durability
IP66-rated for dustproof and waterproof protection
UV-resistant design for protection against prolonged sunlight exposure
Wide operating temperature ranges from –25°C to +70°C
Salt spray tested for over 500 hours
Aluminium grille ensures reliable protection in challenging outdoor conditions
Versatile mounting options including ground stakes, surface mounts

BL12b
12” Long-throw drivers for powerful, articulate low frequency performance
Rugged, robust construction for all-weather durability
IPX5-rated for waterproof protection
UV-resistant design for protection against prolonged sunlight exposure
Wide operating temperature range from –25°C to +70°C
Salt spray tested for over 500 hours
Aluminium grille ensures reliable protection in challenging outdoor conditions
Versatile mounting options including ground stakes, hardscape mounts

KASA 4-250M
Advanced GaN-enhanced Class D amplification for ultralow distortion and dynamic power
Premium DAC/ADC architecture with AKM Velvet Sound DSP for exceptional clarity
Music Integrity Engine (MIE) optimises tonal balance and perfectly timed performance
Intuitive browser based interface allows full configuration without apps or software
Multi-source, multi zone flexibility with independent DSP volume control
Built-in KEF speaker profiles for instant optimisation without manual tuning
Smart-home ready with IP control drivers
Single ended or bridged operation for 4- or 8-ohm loads
Optical, coaxial, and RCA inputs for wide system compatibility
Silent passive cooling with vented chassis for whisper quiet performance
Sleek 2U rack mountable aluminium design (rack mount kit included)

Specification

Model SR6Q
Series      Landscape Satellite Speakers
Nominal impedance 160
Sensitivity (2.83V/1m)  B8dB
Frequency response (±6dB) with back can/rear enclosure      101Hz-20kHz
Frequency range (-10dB) B5Hz-20kHz
Nominal coverage (degrees)    BO"
Nominal Coverage Area   30m2
Max SPL (dB)      109dB
Crossover frequency     2.4 kHz
Drive units MF: 180mm (6.5 in.) Uni-Q, HF:19mm (0.75 in.)
Required amplifier      KEF Network DSP Amplifiers
Recommended amplifier power   240W for 4 in parallel
Recommended high-pass filter (Hz)   100Hz
Product external dimensions(H xWx D)      204x 204x 220mm
Product external dimensions (With wall bracket and knobs) (HxWxD)  277x204x287mm
Product external dimensions (With Groundstake) (HxWxD)   204x204x 605mm
Net Weight  3.5KG 
Operating temperature range   -25℃ to 70℃ 
Safety and Regulatory Compliance    IP66

Model BL12b
Series      Bollard Subwoofers
Nominal impedance 42
Sensitivity (2.83V/1m)  88dB
Frequency response (±6dB) with back can/ rear enclosure     24Hz-300Hz
Frequency range (-10dB) 21Hz-330Hz
Nominal coverage (degrees)    360°
Nominal Coverage Area   200m2
Max SPL (dB)      115dB
Crossover frequency     N/A
Drive units LF: 300mm (12 in.)      
Required amplifier      KEF Network DSP Amplifiers
Recommended amplifier power   400 W
Recommended high-pass filter (Hz)   N/A
Recommended low-pass filter (Hz)    170 Hz
Product external dimensions (HxWxD) 816 x 362 x 362mm   
Product external dimensions (With hardscape mount) (HxWxD)  826 x 362 x 362mm
Product external dimensions (With Groundstake) (HxWxD)      1100 x 362 x 362mm
Net Weight  19KG
Operating temperature range   -25℃ to 70℃ 
Safety and Regulatory Compliance    IPX5

Model KASA 4-250M
Series      Network DSP Amplifiers
Channels    4
Output Power      
(40hm) (1% THD) (SINGLE CHANNEL)    250 W
(8 0hm) (1% THD) (SINGLE CHANNEL)   125 W
(40hm) (1% THD) (Bridge Rating)     500 W
(8 Ohm) (1% THD) (Bridge Rating)    500 W
Maximum Output Power, all channels driven 250 W per channel @ 40hm
Frequency response,-0.5dB (4 Ohm)   20Hz -20kHz
THD+Noise   <0.008% @ 1kHz, 40hm 10 W
Signal to Noise Ratio   >95
Amplifier Class   Class D with advanced GaN FET output stage
Cooling in rated operating conditions     Silent passive cooling
Standby Power     2W
Power Input 100-240VAC 50/60Hz
Product external dimensions (HxWx D)      88 x 427 x 398mm
Product external dimensions (With rack bracket and knobs) (H x Wx D)    88 x 481.9x481.9mm
Net Weight  6.9KG
Gross Weight      12.9KG