Compare Sonus faber Vox vs KEF R2c vs Amphion Helium520C

Variants
Red
Wenge

Construction

Colors
RED (walnut wood essence with black inlays combined with brushed black aluminium and black leather); WENGE (wenge wood essence with maple inlays with brushed aluminium in titanium finish and brown leather)
Black Gloss, White Gloss, Walnut
Speaker: White, Black, or Walnut / Grilles: Stone grey, Traffic red, heather violet, Turquoise blue, Sky blue, Yellow green, Sulfur yellow, Beige brown
Drivers | Midrange
2x 150mm M15 XTR-08 Neodymium Magnet System
1x 125mm (5in.) aluminium cone
Drivers | Tweeter
1x 28mm H28 XTR-04 DAD Arrow Point
1x 25mm (1in.) vented aluminium dome
1x 1" titanium tweeter
Drivers | Woofer
2x 180mm W18XTR-08
2x 130mm (5.25in.) hybrid aluminium
2x 5.25" paper woofer
Form Factor
Center Channel
Center channel loudspeaker
Center channel loudspeaker
Loudspeaker Type
3-way bass-reflex
3-way, closed
2-way, bass reflex

Dimensions

Size | Depth
385 mm
308.5 mm
265 mm (10.5")
Size | Height
315 mm
175 mm
160 mm (6.5")
Size | Width
836 mm
550 mm
510 mm (20")
Weight
35 kg (77 lbs)
16.9 kg (37.3 lbs.)
10 kg (22 lbs)

Function

Crossover
250Hz, 2500Hz
400Hz, 2.9kHz
1600 Hz

Performance

Frequency Response
40Hz-35kHz
74Hz-28kHz (±3dB)
48Hz - 25kHz (-6dB)
Impedance
4 ohms
8 ohms (min 3.2 ohms)
8 ohms
Max Sound Level
110 dB
Power Input
50-350 W
15-200 W
10-150 W
Sensitivity
89 dB
87 dB
90 dB

Production

Debut
2017
2018
2017-12 (redesigned)
Made In
Italy (handmade)
China
Finland (handmade)

Price

Offers (incl. referral links)
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