Specifications
- Speaker TypeBookshelfRMS Power100 wattsWireless ConnectivityBluetooth, Wi-Fi
- Key Specs
- Speaker Type: Bookshelf
- RMS Power: 100 watts (The maximum amount of continuous power the device is able to handle.)
- Wireless Connectivity: Bluetooth, Wi-Fi (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
- General
- Brand: KEF
- Model Number: LS50ABL2
- Product Name: LS50 WIRELESS II Bookshelf Speakers Pair
- Color: Black
- Audio
- Speaker Type: Bookshelf
- Enclosure Type: Bass reflex
- RMS Power: 100 watts (The maximum amount of continuous power the device is able to handle.)
- Peak Power Handling: 200 watts (The maximum amount of power an electronic device, like a speaker, can handle without damage. This refers to short bursts of power, while root mean square (RMS) power handling indicates the amount of continuous power a device can sustain. Higher levels of distortion can also occur at peak power levels when the device is powered beyond its recommended usage.)
- Impedance: 8 ohms (Describes the resistance of an electric signal throughout the system. Devices with low impedance require less power to deliver optimal signals but are more at risk for damage from overloading. Higher impedance requires more power but is more protected from overload damage.)
- Minimum Frequency Response: 40 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Maximum Frequency Response: 55 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Sensitivity: 85 decibels
- High Resolution Audio: true (Hear music the way musicians and sound technicians intended it to be heard. Products that support hi-res audio deliver audio signals with a dynamic range and bandwidth far greater than that of a standard CD so you'll be able to enjoy pure music with outstanding sound quality. The device supports high-resolution audio signals, which more closely resemble the quality of music as it was originally recorded, with more texture and detail than can be heard via typical music streaming services or CDs.)
- Tweeter Type: Dome
- Woofer Type: Cone
- Number of Speakers: 1
- Number of Tweeters: 1
- Tweeter Size: 1 inches
- Number of Midranges: 0
- Number of Drivers: 2
- Driver Size: 5.25 inches
- Number of Woofers: 1
- Woofer Size: 5.25 inches
- Connectivity
- Speaker Connectivity: Wireless
- Wireless Connectivity: Bluetooth, Wi-Fi (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
- Wireless Multi-Room Audio: true (Technology that allows multiple speakers and/or soundbars to be connected wirelessly and play audio in separate rooms.)
- Wireless Multi-Room Technology: Apple AirPlay, Google Cast (Proprietary technology that allows multiple speakers and/or soundbars to be connected wirelessly and play audio in separate rooms.)
- Audio Only Inputs: 1 x USB-A, 1 x Optical digital audio, 1 x Optical digital audio
- Network Connector(s): 1 x LAN
- Speaker Wire Connection Type: Binding posts, Binding posts
- Features
- App Compatible: false (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
- Indoor Or Outdoor Use: Indoor (Indicates the appropriate environment product was designed to be used in.)
- Dimensions
- Product Height: 18 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 24 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth: 17 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
- Product Weight: 44 pounds (The out of box weight of the item.)
- Material
- Tweeter Material: Aluminum
- Driver Material: aluminum
- Woofer Material: Aluminum
- Included
- Speaker Wire Included: false
- Certifications Listings & Approvals
- ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
- Warranty
- Warranty - Parts: 2 Year
- Warranty - Labor: 2 Year
- Other
- UPC: 637203046964
When it comes to physical technology, LS50 Wireless II takes its lead from KEF’s LS50 Meta passive loudspeakers. A truly revolutionary tool in the KEF acoustic armoury, Metamaterial Absorption Technology1 (MAT) is a highly complex maze-like structure, where each of the intricate channels efficiently absorbs a specific frequency. When combined, the channels act as an acoustic black hole, absorbing 99% of the unwanted sound that comes from the rear of the tweeter, eliminating the resulting distortion and providing a purer, more natural sound.
- KEF LS50 WIRELESS II: The lowdiffraction, curved baffle is precision modelled around the Uni-Q driver array, while eye-catching heat sinks and colour-matched ports are located on the well-equipped rear
- Subwoofer Output: For even more impact and bass extension, LS50 Wireless II features two subwoofer outputs, one on each speaker
- Features: Comprehensive applications and connectivity
- Music: Play all major music services and supports all major audio formats
- Tecnology: Metamaterial Absorption Technology for pure, natural sound
Whats Included
- LS50 WIRELESS II Bookshelf Speakers Pair
Product Manuals
Q: How does the Metamaterial Absorption Technology work in the speakers?
A: Metamaterial Absorption Technology uses a complex maze-like structure with channels that absorb specific sound frequencies. These channels act as an acoustic black hole, absorbing 99% of unwanted sound coming from the rear of the tweeter. This eliminates distortion and provides a purer, more natural sound.
Q: What type of wireless connectivity does the speaker offer?
A: This speaker offers Bluetooth wireless connectivity.
Q: What is the purpose of the acoustic black hole in the speakers?
A: The acoustic black hole absorbs unwanted sound from the rear of the tweeter. This eliminates distortion and provides a purer, more natural sound.
Q: What are the dimensions of the speakers?
A: The LS50 Wireless II speakers have a height of 18 inches, a width of 24 inches, and a depth of 17 inches.
Q: Why are the speakers considered a revolutionary tool in the KEF acoustic armoury?
A: The speakers are considered revolutionary because they utilize Metamaterial Absorption Technology (MAT), a complex structure that acts as an acoustic black hole. This technology absorbs 99% of unwanted sound from the rear of the tweeter, eliminating distortion and delivering a purer, more natural sound.
Q: Do these speakers support Pandora streaming?
A: The short answer is yes. Pandora doesn't have a dedicated streaming protocol like some services, so there's no special compatibility required. You can use your phone or tablet's built-in Google Cast or AirPlay function to stream to the LS50W2. You can also use Bluetooth, but the quality will be lower so I don't recommend that.
A: KEF LS50 are passive speakers, which means they need to be connected to an amplifier or AV receiver. LS50 Wireless II are active speakers, they have built in amplifiers and they have wireless capability. I have LS50 Wireless II and am very happy with their performance.
KEF - LS50 WIRELESS II Bookshelf Speakers Pair - Black
Color
BlackCompare similar products
$2999.99
When it comes to physical technology, LS50 Wireless II takes its lead from KEF’s LS50 Meta passive loudspeakers. A truly revolutionary tool in the KEF acoustic armoury, Metamaterial Absorption Technology1 (MAT) is a highly complex maze-like structure, where each of the intricate channels efficiently absorbs a specific frequency. When combined, the channels act as an acoustic black hole, absorbing 99% of the unwanted sound that comes from the rear of the tweeter, eliminating the resulting distortion and providing a purer, more natural sound.
$299.99
Experience great sound reproduction with these KEF bookshelf loudspeakers. The Uni-Q driver array provides depth and clarity, and the damped tweeter loading tubes enhance the accuracy and natural sound of lower trebles. These KEF bookshelf loudspeakers let you enjoy dynamic audio details with a frequency response of 51Hz - 28kHz.
$1499.99
LSXII delivers room-filling, natural, accurate sound from any source thanks to the knowledge and experience of KEF's talented engineers and the iconic Uni-Q driver array.
$1599.99
The LS50 Meta has inherited its distinctive good looks from the original LS50, with its low-diffraction, curved baffle precision modelled around the Uni-Q driver array. The curved front is subtly mirrored by the gently radiused rear panel, while both the port exit and speaker terminals have been elegantly recessed and softened visually. The LS50 Meta’s extremely rigid cabinet is optimised for the best performance, with smooth curved surfaces that help radiate sound out across the baffle without any interference
| Pros for KEF - LS50 WIRELESS II Bookshelf Speakers Pair - Black | |||
|---|---|---|---|
| Sound Quality, Ease of use, Design | Sound Quality, Bass, Price, Highs, Imaging | Sound Quality, Size | Sound Quality, Appearance |
| Cons for KEF - LS50 WIRELESS II Bookshelf Speakers Pair - Black | |||
| Connectivity, Bass | Size, Grill | Bass, Connectivity | Bass, Size |
Specs
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Reviews
Customers are saying
Customers are enthusiastic about the LS50 WIRELESS II Bookshelf Speakers Pair for its exceptional sound quality, with many praising its rich and detailed sound with balanced bass and crystal-clear highs. The wireless connectivity and sleek design are also highly appreciated, with customers highlighting the seamless wireless connection and elegant aesthetics that complement any home décor. While some mentioned the potential need for a subwoofer for enhanced bass, the overall sentiment is overwhelmingly positive.
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products or points for an honest, helpful review.
- Rated 5 out of 5 stars
Hi-Fi for the Rest of Us
USE CASE: Before digging in, let's be clear: the KEF LS50 Wireless II (LS50W2) isn't just a pair of speakers: it's a complete wireless streaming DAC and dual amplified stereo system controlled with your phone or tablet. It has an attractive, minimalist aesthetic and as such makes the most sense when used as a standalone system to bring superior stereo sound into a living or working space. It can perform well as a desktop system, but I would argue that the price is difficult to justify when used exclusively in this way- if you’re plugging them into a computer you’ll be paying for a lot of technology you don’t need, and in my opinion they’re oversized and overpowered for exclusively near-field use. CONNECTIVITY: The LS50W2 is set up and controlled through the KEF Connect app, which requires an iOS or Android device. Once you’re up and running, though, you can use the speakers with almost any digital source. Roon, Google Cast, AirPlay 2, and UPnP are all supported, as is Bluetooth (though if you ask me using Bluetooth with speakers this good is like putting cheap gas in a racing car). They also support direct play from the apps and web browser interfaces of all the major music streaming services in addition to an assortment of physical ports including S/PDIF via TOSLINK or RCA and eARC-enabled HDMI suitable for connection to a television. In short, whatever the source or the control device, you’ll almost certainly be able to play it on the LS50W2. So what’s missing? Well, there is no USB input (don’t be fooled by the USB port on the back, it’s for service access to the internal electronics) and analog input is limited to a humble 3.5mm plug. Those considering use in a home theater should also note that LFE is not supported, nor are outputs for surround speakers. SETUP: I found the system very easy to set up, but again, this is a digital device that’s controlled with an app, so if you’re the sort of person who wants control in the form of physical switches and dials you may want to look elsewhere. If you’re comfortable using a smartphone, you should get on just fine. Each speaker must be connected to a grounded power socket- cords are included, but they are only two meters (about six and a half feet) long. The good news is that they have a standard C13 plug in the back so you can easily and cheaply buy a longer cord if desired. Optionally, you can also attach the main speaker to your router and to the companion speaker with ethernet cables. Wiring to the internet is only necessary if your Wi-Fi connection is dodgy. Wiring the speakers together will increase the sample rate of the audio stream from 96kHz to 192kHz, but you’re unlikely to hear the difference. The speakers function in a master/slave relationship, and all of the inputs (and a set of simple touch controls) are on the master unit. The quick setup guide will tell you that this should be your right channel, but reversing them is a simple toggle switch in the app, so put it on whichever side makes sense for your space. There is a simple IR remote included as well for basic control once you have your playlist going (power, mute, volume, source, play/pause, and previous/next track). PERFORMANCE STRENGTHS: The most impressive thing about the LS50W2 is its versatility: with a minimum of care taken positioning the speakers and utilizing the in-app EQ they can be made to sound very good in almost any space. I use them primarily for near- and mid-field listening on stands pointed at a chair near the back corner of my living room. Aside from an area rug in that corner this room has basically no acoustic treatment and even putting aside the odd positioning would make an audio snob shake his head: hard floor and ceiling, lots of bare walls, only moderate furnishing (including a big glass table), and a huge picture window with plastic blinds all along one side. Despite all this, they have an excellent horizontal soundstage and a level of fidelity that I would have doubted was possible given the setting. In fact, they don’t sound bad even if you’re just hanging around in the room (BEHIND the speakers!). PERFORMANCE WEAKNESSES: Though quite powerful for their size (enough to fill pretty much any residential-sized room at what I would consider to be plenty loud volumes), note that these are designed to reproduce fine detail, not to blast your hair back at a house party. There’s very little vertical soundstage, though that’s not really a fair criticism considering you generally need floorstanding speakers to get that. In my experience they don’t perform quite as well on a table or shelf as they do on a proper filled speaker stand, so I would recommend stand mounting if that’s possible for your space. The LS50W2’s greatest weakness from a sound reproduction standpoint is a consequence of its small size: weak sub bass performance. If you live in an apartment like I do that might be a blessing in disguise, but there is an RCA subwoofer output on each unit if you want to bring the low end power; the in-app EQ includes basic bass management controls to assist with integration. SUMMARY: If you’re fortunate enough to have a proper listening room the KEF LS50 Wireless II will rival traditional stereo systems with separate components well above its price point, but what really makes it special is that even if you just want to throw the speakers wherever they fit into an existing multi-use space they will sound at least passable for critical listening. That is extremely impressive. The audiophile community is home to a great many snobs that turn up their noses at this kind of casual approach to high-end audio, and if I’m honest there’s better sound out there to be had for those with the time, money, and interest to make a hobby of it, but for the rest of us? At this price, with these features, this compact, this attractive, this flexible and easy to use; I wouldn’t choose anything else.
Posted by Zeke
- Rated 5 out of 5 stars
Why anything else?
Best speakers I've had in my life. It looks super premium and sounds soul touching. Everytime i pass by it i cant help but stop and admire the look of it. The titanium color with the red accent to put the cherry on top is a color combo made in heaven. Only gripe is the sign up process plus the lack of type c input port but technically not needed. Overall never going back and why should I?
This review is from KEF - LS50 WIRELESS II Bookshelf Speakers Pair - Grey
Posted by TanvirM
- Rated 5 out of 5 stars
Game-changer
Game-changer. Combining sleek design with exceptional sound quality, these speakers offer an immersive listening experience. The wireless connectivity is seamless. The sound is rich and detailed, with a balanced bass and crystal-clear highs that cater to audiophiles and casual listeners alike. Top-tier choice for anyone looking to elevate their home audio setup.
Posted by AnthonyA