Vented NRS Exponentional Hourglass
Vent Geometry
Bi-dimensional Hyper-Exponential Hourglass Type
Configuration
3-way Reversed Vertical Alignement Free-Standing
Drivers
1 Tweeter 32 mm SILVERSOFT™ dome NeFeB motor
1 Woofer 170 mm ROHACELL ® Full-Apex Poly-Ring NeFeB motor
2 Subwoofer 200 mm Natural Fibres Poly-Ring NeFeB motor
Sensitivity
90 dB SPL normalized to 1 m / 2.83 Vrms / decorrelated L/R
pink noise ITU-R BS 1116-1 compliant listening room
Low Frequency Cut Off
35 Hz @ -3dB referred to C4 WETS
Doublet Crossover
100 Hz
Mid Hig Crossover
1180 Hz / LKR4 Derived (Δf = 45°)
Rated Impedance
Modulus 4 Ω (min 3.0) Argument ± 36°
Cabinet
Solid walnut and HDF. The structure comprises two cabinets:
the lower contains two subwoofers; the upper contains one woofers, and
one tweeter. The two wood cases are separated by four
cylindrical proprietary-engineered elastomeric puffers
acting as vibration decouplers to dissipate mechanical energy by orthogonal
elongation
Size & Weight
1220 x 240 x 440 mm (H x W x D) / 47 Kg
Speakers Orientation
Speakers should be tilted inward facing the listener
Listening Distance
Optimum speaker-listener distance > 3.0 m
Suggested Amplifier
Normal Amping. - 180 W/4Ω Max Average Power
Bi-Amping. - 120 W/4Ω Max Average Power