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KEF LSX vs. Bose Virtually Invisible 300 + 1
Active
Yes
Yes
Yes
Frequency range (max)
28000 Hz
20000 Hz
Frequency range (min)
49 Hz
55 Hz
Impedance
Power (peak/max)
70 W
33 W
Power (RMS)
Sensitivity
Wireless connection
Bluetooth
Bluetooth
Bluetooth
Streaming standards
AirPlay, Spotify Connect, Tidal, AirPlay 2
Other connectors
Digital optical input (S/PDIF), Pre out (subwoofer), Analogue 3.5mm input/Line-in
Digital optical input (S/PDIF), Pre out (subwoofer), Analogue 3.5mm input/Line-in
Type of connection
Bi-wire
Available colours
Black, White, Silver, Brown, Blue, Red, Wenge
Black, White, Wenge
White, Grey, Walnut
Dimensions (WxHxD)
Depth
180 mm
83.8 mm
135 mm
Height
240 mm
93.9 mm
170 mm
Width
155 mm
81.2 mm
130 mm
Product weight
3.6 kg
0.54 kg
3.5 kg
Features
Remote control
Remote control
Midrange driver
Yes
No
Quantity
1 ​
Signal separation
2-way
2-way
Tweeter drivers, size
0.75 inches
0.8 inches
Tweeter drivers, type
Aluminum / magnesium-dome
Fabric/silk dome (soft dome)
Type of box body
Bass reflex
Bass reflex
Woofer driver, size
4.5 inches
3 inches
Woofer drivers, quantity
1 ​
1 ​