Compare Amphion Helium520C vs KEF R2c vs Amphion Helium520C
Construction
Colors
Speaker: White, Black, or Walnut / Grilles: Stone grey, Traffic red, heather violet, Turquoise blue, Sky blue, Yellow green, Sulfur yellow, Beige brown
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
1x 125mm (5in.) aluminium cone
Drivers | Tweeter
1x 1" titanium tweeter
1x 25mm (1in.) vented aluminium dome
1x 1" titanium tweeter
Drivers | Woofer
2x 5.25" paper woofer
2x 130mm (5.25in.) hybrid aluminium
2x 5.25" paper woofer
Form Factor
Center channel loudspeaker
Center channel loudspeaker
Center channel loudspeaker
Loudspeaker Type
2-way, bass reflex
3-way, closed
2-way, bass reflex
Dimensions
Size | Depth
265 mm (10.5")
308.5 mm
265 mm (10.5")
Size | Height
160 mm (6.5")
175 mm
160 mm (6.5")
Size | Width
510 mm (20")
550 mm
510 mm (20")
Weight
10 kg (22 lbs)
16.9 kg (37.3 lbs.)
10 kg (22 lbs)
Function
Crossover
1600 Hz
400Hz, 2.9kHz
1600 Hz
Performance
Frequency Response
48Hz - 25kHz (-6dB)
74Hz-28kHz (±3dB)
48Hz - 25kHz (-6dB)
Impedance
8 ohms
8 ohms (min 3.2 ohms)
8 ohms
Max Sound Level
110 dB
Power Input
10-150 W
15-200 W
10-150 W
Sensitivity
90 dB
87 dB
90 dB
Production
Debut
2017-12 (redesigned)
2018
2017-12 (redesigned)
Made In
Finland (handmade)
China
Finland (handmade)
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