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KEF LS50 vs. Bose Surround Speakers + 3
Active
No
Yes
Yes
Yes
Yes
Frequency range (max)
45000 Hz
28000 Hz
47000 Hz
20000 Hz
Frequency range (min)
47 Hz
49 Hz
43 Hz
55 Hz
Impedance
8 Ω
Power (peak/max)
100 W
70 W
33 W
Power (RMS)
100 W
230 W
Sensitivity
85 dB
Wireless connection
None
Bluetooth
Bluetooth
Bluetooth
Bluetooth
Streaming standards
AirPlay, Spotify Connect, Tidal, AirPlay 2
AirPlay, Spotify Connect, Tidal
Other connectors
Digital optical input (S/PDIF), Pre out (subwoofer), Analogue 3.5mm input/Line-in
Digital optical input (S/PDIF), RCA stereo input, USB, Pre out (subwoofer)
Digital optical input (S/PDIF), Pre out (subwoofer), Analogue 3.5mm input/Line-in
Type of connection
Single-wire
Available colours
Black, White, Silver, Grey, Blue, Red, Wenge
Black, White, Wenge
Black, White, Silver, Blue, Red, Wenge
Black, White, Silver, Grey, Blue, Red, Wenge
White, Grey, Walnut
Dimensions (WxHxD)
Depth
278 mm
83.8 mm
180 mm
308 mm
135 mm
Height
302 mm
94 mm
240 mm
300 mm
170 mm
Width
200 mm
155 mm
200 mm
130 mm
Product weight
7.2 kg
1 kg
3.6 kg
20.2 kg
3.5 kg
Features
Remote control
Remote control
Remote control
Midrange driver
No
Yes
No
No
Quantity
1 ​
Signal separation
2-way
2-way
2-way
2-way
Tweeter drivers, size
1 inches
0.75 inches
1 inches
0.8 inches
Tweeter drivers, type
Aluminum-dome
Aluminum / magnesium-dome
Aluminum-dome
Fabric/silk dome (soft dome)
Type of box body
Bass reflex
Bass reflex
Bass reflex
Bass reflex
Woofer driver, size
5.23 inches
4.5 inches
5.25 inches
3 inches
Woofer drivers, quantity
1 ​
1 ​
1 ​
1 ​