Focal Alpha 50 EVO vs KEF LSX II LT

Last updated: September 24, 2026

Short answer: the Focal Alpha 50 EVO for level headroom, the KEF LSX II LT for driver integration. The Focal is more neutral than the great HS5, while the KEF’s coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange. The KEF’s small drivers are SPL-limited, though, with bass compression kicking in around 88-92dB/1m per speaker.

Focal Alpha 50 EVO vs KEF LSX II LT

On the Focal Alpha 50 EVO side: More neutral than the great HS5.

The case for the KEF LSX II LT: Coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange. Set against that: Small drivers mean it’s SPL-limited: bass compression kicks in around 88-92dB/1m per speaker.

Buy the KEF LSX II LT. It is rated higher for sound quality, and the $220.99 you would save on the Focal Alpha 50 EVO does not close the gap.

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Specifications Side By Side

Focal Alpha 50 EVO KEF LSX II LT
Price$658 per pair$549.99 per pair
Ranked#37 of 67 in Medium Size Powered Bookshelf Speakers#26 of 67 in Medium Size Powered Bookshelf Speakers
Dimensions12.2"H x 9"W x 9.4"D (309.9 x 228.6 x 238.8 mm)9.5"H x 6.1"W x 7.1"D (241.3 x 154.9 x 180.3 mm)
Frequency Response45 Hz - 22 kHz (+-3 dB) (Manufacturer specified)54Hz - 28kHz (±3dB) (Manufacturer specified)
InputsXLR, TRS, RCAWifi, USB-C, HDMI, Optical, Bluetooth
Weight13.2 lbs (6.0 kg) each15 lbs (6.8 kg)
Drivers5" (127mm) woofer115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter
AppNoNo
BluetoothNoNo
EQYes (Room adjustment)No
Amplifier Power60w Per Speaker100w RMS Per Speaker
Spinorama Preference Score1.043.26
Spinorama Preference Score with Perfect Sub5.705.62
XLR InputYesNo
RCA InputYesNo
TRS InputYesNo
Optical InputNoYes
Coaxial InputNoNo
USB InputNoYes
HDMI InputNoYes
AES InputNoNo
Aux InputNoNo
Outputs-RCA Subwoofer
Bass Extension (-3dB)-55Hz (measured, Erin's Audio Corner)
Bass Extension (-10dB)-46Hz (measured, Erin's Audio Corner)
Sensitivity-84dB (measured at 0.3V/1m, Erin's Audio Corner)
Subwoofer Output-Yes

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The Two Speakers In Full

Focal Alpha 50 EVO: $658 per pair Amazon eBay

Focal Alpha 50 EVO ranking card

Pros: Rear shelving controls and a conventional studio-monitor layout provide practical placement adjustment.

Cons: Basic shelving controls are less flexible than parametric room correction. Careful placement is still important, especially near walls or on a desk.

AES InputNo
Amplifier Power60w Per Speaker
AppNo
Aux InputNo
BluetoothNo
Coaxial InputNo
Dimensions12.2"H x 9"W x 9.4"D (309.9 x 228.6 x 238.8 mm)
Drivers5" (127mm) woofer
EQYes (Room adjustment)
Frequency Response45 Hz - 22 kHz (+-3 dB) (Manufacturer specified)
HDMI InputNo
InputsXLR, TRS, RCA
Optical InputNo
RCA InputYes
Spinorama Preference Score1.04
Spinorama Preference Score with Perfect Sub5.70
TRS InputYes
USB InputNo
Weight13.2 lbs (6.0 kg) each
XLR InputYes

KEF LSX II LT: $549.99 per pair Amazon eBay

KEF LSX II LT ranking card

Pros: The coincident driver provides useful consistency across listening positions, and the app offers placement and subwoofer adjustments. Erin’s measurements give preference scores of 3.93 standalone and 6.16 with an ideal subwoofer, with -3dB bass around 56Hz. HDMI and USB connectivity make it convenient for a small TV or desktop system. Measured bass extension of 55Hz (-3dB), with a measured sensitivity of 84dB.

Cons: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors. The existing review finds bass compression around 88-92dB/1m and rising distortion at higher levels, so the small drivers suit close listening rather than a large room. This LT version has no analog input; a turntable cannot plug straight into it.

AES InputNo
Amplifier Power100w RMS Per Speaker
AppNo
Aux InputNo
Bass Extension (-10dB)46Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)55Hz (measured, Erin's Audio Corner)
BluetoothNo
Coaxial InputNo
Dimensions9.5"H x 6.1"W x 7.1"D (241.3 x 154.9 x 180.3 mm)
Drivers115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter
EQNo
Frequency Response54Hz - 28kHz (±3dB) (Manufacturer specified)
HDMI InputYes
InputsWifi, USB-C, HDMI, Optical, Bluetooth
Optical InputYes
OutputsRCA Subwoofer
RCA InputNo
Sensitivity84dB (measured at 0.3V/1m, Erin's Audio Corner)
Spinorama Preference Score3.26
Spinorama Preference Score with Perfect Sub5.62
Subwoofer OutputYes
TRS InputNo
USB InputYes
Weight15 lbs (6.8 kg)
XLR InputNo