Features
- Hard paper cone for improved piston operation (made in-house)
- Large optimized motor system with under-cut pole piece and dual shorting rings
- Vented aerodynamic cast aluminium chassis for optimum strength and low compression
- Soft low damping rubber surround for optimum transient response
- Linear symmetric suspension design for improved dynamic performance
- Non-conducting fibre glass voice coil former for minimum damping
- 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 8 Ω
- DC resistance, Re 5.8 Ω
- Voice coil inductance, Le 0.56 mH
- Effective piston area, Sd 255 cm2
- Voice coil diameter 49.5 mm
- Voice coil height 23 mm
- Air gap height 6 mm
- Linear coil travel (p-p) 17 mm
- Magnetic flux density 1.1 T
- Magnet weight 1.36 kg
- Net weight 3.7 kg
- Free air resonance, Fs 24.5 Hz
- Sensitivity (2.83V/1m) 88 dB
- Mechanical Q-factor, Qms 5.7
- Electrical Q-factor, Qes 0.41
- Total Q-factor, Qts 0.38
- Moving mass incl. air,Mms 44.5 g
- Force factor, Bl 9.9 Tm
- Equivalent volume, Vas 87.5 liters
- Compliance, Cms 0.95 mm/N
- Mechanical loss, Rms 1.2 kg/s
- Rated power handling* 90 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.
