Features
- Vented aerodynamic cast aluminium chassis for optimum strength and low compression
- Proprietary cone material with EGYPTIAN PAPYRUS™ fibres made in-house
- Soft low damping rubber surround for optimum transient response
- Advanced BIMAX spider for improved linearity
- Powerful optimized low distortion neodymium motor system
- Non-conducting fibre glass voice coil former for minimum damping
- Extended copper sleeve on pole piece for low inductance and reduced distortion
- CCAW voice coil for reduced moving mass
- Long life silver lead wires attached 180° apart for improved stability
- Vented pole piece for reduced compression
- Low piston to chassis diameter ratio
- Gasket and bolt hole protrusions for reduced coupling to speaker cabinet
Specs
- Nominal Impedance 4 Ω
- DC resistance, Re 3.4 Ω
- Voice coil inductance, Le 0.14 mH
- Effective piston area, Sd 158 cm2
- Voice coil diameter 39 mm
- Voice coil height 19.6 mm
- Air gap height 6 mm
- Linear coil travel (p-p) 13.6 mm
- Magnetic flux density 1.1 T
- Magnet weight 0.15 kg
- Net weight 1.48 kg
- Free air resonance, Fs 32 Hz
- Sensitivity (2.83V/1m) 91.5 dB
- Mechanical Q-factor, Qms 4.11
- Electrical Q-factor, Qes 0.30
- Total Q-factor, Qts 0.28
- Moving mass incl. air,Mms 18.4 g
- Force factor, Bl 6.5 Tm
- Equivalent volume, Vas 48 liters
- Compliance, Cms 1.35 mm/N
- Mechanical loss, Rms 0.9 kg/s
- Rated power handling* 70 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.
