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K2 Composite Sandwich Membrane/Cone: The FOCAL K2 Power 46 KX
4 features a composite sandwich membrane/cone comprised of a foam layer, sandwiched
between two Kevlar layers. The result is a material structure that is rigid, yet
light weight, and allows fast bass response without distortion.
Voice Coils: The four 1-ohm voice coils are 8 layer, 3"
diameter, copper windings on an aluminum former, resulting in high power handling,
low distortion, and impedance flexibility. When the voice coils are wired in parallel,
the woofer presents a 1/4-ohm load. When the voice coils are wired in series, the
woofer presents a 4-ohm load.
High-Performance Spider: The 46 KX 4 features a high-performance
spider with the tinsel leads sandwiched between the two layers to eliminate wire
Spring-Posts: The woofer features four sets of nickel-plated
spring-post speaker terminals that will accept pin connectors, dual and single
banana plugs, and bare wire up to 8-gauge.
Ported Box Volume: The 46 KX 4 is designed to be installed in
a ported box with a volume between 2.82 ft³ and 4.24 ft³. FOCAL highlights three
specific enclosures in the manual:
- 2.82 ft³: Fast and tight bass, -3dB
frequency of 45 Hz
- 3.53 ft³: Punchy and dynamic bass,
-3dB frequency of 40 Hz
- 4.24 ft³: Deep and articulate bass,
-3dB frequency of 37 Hz