Drivers:
BilletCore ultra-high-rigidity woofers and mids
BilletDome ultra-low-distortion tweeter with ForgeCore motor

Filters:
Sonja 2i is fully-passive
Proprietary DualCoherent 2 crossover at 65 Hz and 1.75 kHz
Designed using software developed in-house
ViseCoil bass inductors reduce residual loss and improve linearity for greater bass impact and an easier job for most amplifiers
ToroAir inductors eliminate cross-talk

Sensitivity:
88 dB / 2.83 V / 1 m 2π anechoic

Impedance:
4Ω nominal, 3Ω minimum

Dimensions:
Sonja 2.3i– 179x43x72 cm (70x17x28”) HxWxD

Weight:
Sonja 2.3i – 205 kg (452 lbs) per channel unpackaged