Description The KEF LS50 Wireless II is more than a high-performance loudspeaker; it’s the perfect all-in-one speaker system. Great sound & no strings attached. The award-winning LS50 Wireless II reveals every detail of your favourite music, which you stream from any source thanks to wireless compatibility with AirPlay 2, Chromecast and more. It also connects to Roon without the need of configuration, so you can enjoy bit-perfect high-fidelity sound with zero fuss. The LS50 Wireless II contains the 12th Generation Uni-Q driver array featuring an industry first – Metamaterial Absorption Technology (MAT). This particular Uni-Q driver, whilst being inspired by that of the R Series, has been engineered with regards to the overall system design. The active LS50 Wireless II incorporates all the technology described for the passive LS50 Meta, plus a few extras that either add to the presentation of the music – making it even more accurate – or add to the functionality. The electronics, mounted on the back, includes two channels of power amplification (one channel for each driver and each of higher power than the original LS50 Wireless) and the KEF Musical Integrity Engine (MIE). This is essentially custom Digital Signal Processing (DSP) that allows the acoustic engineer to do far more than is possible in any passive design. Each stereo pair comprises a Primary and a Secondary speaker. The former incorporates adjustments applicable to both speakers, such as bass extension, room acoustic compensation, source selection and placement/EQ. Bass may be extended to lower frequencies than is limited by the usual passive cabinet-size/sensitivity trade-off, the balance may be adjusted for speaker position and room acoustics and the all-pass delay inherent in passive crossovers may be eliminated. All adjustments are made using a smartphone app. This is available for both iOS and Android devices and is a free download either from the Apple App Store or the Google Play Store as appropriate. If you want to know more about the KEF LS50 Wireless II speaker, just follow this link to the KEF UK website. For other KEF products in our range, just click here. Drive Units Uni-Q Driver Array: LF: 130 mm (5.25 in.) aluminium cone, HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption Technology Amplifier Class: LF: Class D, HF: Class AB, Max SPL Measured at 1m: 108 dB Frequency Response (±3dB) Measured at 85dB/1m: 45 Hz – 28 kHz *Depends on EQ settings Frequency Range (-6dB) Measured at 85dB/1m: 40 Hz – 47 kHz *Depends on EQ settings Home Automation System: Elan, RTi, Crestron Home, Savant, Control4, URC Primary Speaker Inputs: HDMI eARC TOSLINK Optical Digital Coaxial Analog 3.5mm Auxiliary USB Type A (service) RJ45 Ethernet (network) RJ45 Ethernet (interspeaker) Secondary Speaker Inputs: USB Type A (service) RJ45 Ethernet (interspeaker) Output: RCA Subwoofer output Interspeaker Connection Wireless: all sources resampled to 96kHz/24bit PCM Wired: all sources resampled to 192kHz/24bit PCM Wireless Streaming Features: AirPlay 2 Google Cast ROON Ready UPnP Compatible Bluetooth 5.0 Plays with Audirvāna Streaming Services: Spotify via Spotify Connect Tidal via Tidal Connect Amazon Music Qobuz Deezer QQ Music via QPlay (coming soon) Internet Radio Supported Format (All Inputs): MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis Source Resolution: Network up to 384kHz/24bit Optical up to 96kHz/24bit Coaxial up to 192kHz/24bit HDMI up to 192kHz/24bit Supported Format (Network): MQA, DSF: DSD64, DSD128, DFF: DSD64 Wi-Fi Network Standard: IEEE 802.11a/b/g/n/ac, IPv4, IPv6 Wi-Fi Network Frequency Band: Dual-band 2.4 GHz / 5 GHz Amplifier Output Power (Per Speaker): LF: 280W HF: 100W Power Input: 100 – 240VAC 50/60Hz Power Consumption: 200W (operating power)
