Acapella ION TW-1S - Do I need a plasma super-tweeter?

Acapella ION TW 1S plasma super-tweeter

 Technical data

Sensitivity (aktive Tweeter): 1,5Volt / 0 dB

Impedance: 600 Ohm

Sound pressure level: max. 110 dB – 1 m / 1ms

Slope Input filter: approx. 12dB/octave

Frequency response: 5kHz – >50kHz (variable crossover frequencies )

Mains voltage: 234 Volt / 50 Hz Standard

Optional 110 -, 117 -, 227 Volt / 50 – 60 Hz

Dimensions H x W x D: 150 x 300 x 260 mm

Weight: 15 kg

$10,775/pair