KEF Landscape P4Q 4.5” Uni-Q Satellite 4.1 Outdoor Speaker System with 2-Ch Amplifier

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KEF Landscape P4Q 4.5" Uni-Q Satellite 4.1 Outdoor Speaker System with 2-Ch Amplifier combines four weather-resistant SR4Q Uni-Q landscape satellites, an 8" BL8b bollard subwoofer, and the KASA 2-250M Network DSP Amplifier to deliver immersive, full-range outdoor sound. Designed for wide coverage, powerful bass, precise DSP control, and reliable all-weather performance, this complete system brings high-fidelity music to expansive outdoor spaces.


Sale price$7,000.00

Key features

IP66 rated for waterproof & dustproof

Temperature range from –25°C to +70°C

Robust construction for all-weather durability

Uni‑Q driver array for accurate & pristine sound

Salt spray tested for over 500 hours

KEF Landscape P4Q 4.5” Uni-Q Satellite 4.1 Outdoor Speaker System with 2-Ch Amplifier

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The KEF Landscape P4Q 4.5” Uni-Q Satellite 4.1 Outdoor Speaker System with 2-Ch Amplifier

The KEF Landscape P4Q 4.5" Uni-Q Satellite 4.1 Outdoor Speaker System with 2-Ch Amplifier is a complete high-fidelity outdoor audio solution designed to deliver clear, immersive sound across expansive outdoor environments. The system combines four SR4Q 4.5" Uni-Q landscape satellites, an 8" BL8b bollard subwoofer, and the KASA 2-250M Network DSP Amplifier for a carefully integrated combination of wide sound coverage, powerful low-frequency performance, and precise system control.

The SR4Q satellites use KEF's signature Uni-Q driver technology to provide smooth, even sound dispersion, while the BL8b adds powerful and articulate bass through its 8" long-throw driver. Together, they create a spacious and balanced outdoor listening experience with detailed high frequencies, controlled midrange, and full-bodied low frequencies.

At the heart of the system, the KASA 2-250M provides advanced amplification and DSP processing, delivering up to 250W per channel at 4 ohms. Its GaN-enhanced Class D amplification, KEF Music Integrity Engine, and premium AKM Velvet Sound DAC/ADC architecture provide efficient, accurate signal processing and precise system tuning. Built-in KEF speaker profiles and a browser-based configuration interface make it easier to optimise the complete system without requiring dedicated software or apps.

Built for outdoor environments, the SR4Q and BL8b feature rugged, weather-resistant construction, UV-resistant designs, aluminium grilles, and wide operating temperature ranges from -25°C to +70°C. With flexible installation options including ground stakes, surface mounts, and hardscape mounting for the subwoofer, the system can be integrated discreetly into gardens, patios, decks, landscaped areas, and other outdoor spaces.

KEF SR4Q 4.5” Uni-Q Outdoor Landscape Satellite Speakers

KEF Uni-Q® Technology for Wide, Even Sound

The SR4Q features a bespoke 4.5-inch Uni-Q driver array with a 19mm tweeter positioned at the acoustic centre of the mid/bass cone. This creates a single-point sound source that helps deliver smooth, consistent audio across a wide listening area.

KEF SR4Q 4.5” Uni-Q Outdoor Landscape Satellite Speakers

Built for Harsh Outdoor Conditions

The SR4Q is engineered to withstand demanding outdoor environments throughout the year. Its IP66-rated, UV-resistant and weather-sealed enclosure provides protection against dust, water, intense sunlight and changing weather conditions.

KEF BL8b 8" Outdoor Bollard Subwoofers

Designed for Expansive Outdoor Listening Areas

With a 120m² nominal coverage area and 360° coverage, the BL8b is designed to distribute bass throughout larger outdoor spaces. It is well suited to gardens, patios, poolside areas, and other environments where traditional indoor-style bass solutions may not be practical.

KEF BL8b 8" Outdoor Bollard Subwoofers

Built to Withstand Tough Outdoor Conditions

The BL8b features an IPX5-rated, UV-resistant and weather-sealed enclosure designed for year-round outdoor use. It can operate in temperatures ranging from -25°C to +70°C, while its construction has also undergone more than 500 hours of salt-spray testing.

KEF KASA 2-250M Series 2-Channel Network DSP Amplifier

Powerful GaN-Enhanced Class D Amplification

The KASA 2-250M delivers up to 250W per channel at 4 ohms with advanced GaN-enhanced Class D amplification for efficient, dynamic, and low-distortion performance. It provides the precise power and control needed to drive the SR4Q satellites and BL8b subwoofer in a high-performance outdoor audio system.

KEF KASA 2-250M Series 2-Channel Network DSP Amplifier

Advanced DSP & Flexible System Control

Featuring KEF’s Music Integrity Engine (MIE), premium AKM Velvet Sound DAC/ADC architecture, and integrated DSP, the KASA 2-250M enables precise system tuning and exceptional clarity. Its browser-based interface, built-in KEF speaker profiles, multi-source/multi-zone flexibility, and independent DSP volume control make system configuration and optimisation straightforward.

KEF Landscape P4Q 4.5” Uni-Q Satellite 4.1 Outdoor Speaker System with 2-Ch Amplifier

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