General Specifications  
Nominal Diameter 106 mm / 4 in
Nominal Impedance LF 8 Ω
Nominal Impedance HF 8 Ω
Sensitivity @ 1W/1m LF 91.2 dB
Sensitivity @ 1W/1m HF 91.9 dB
Voice Coil Diameter LF 38 mm (1.5")
Voice Coil Diameter HF 25 mm (1")
Voice Coil Winding Depth LF 9 mm
Voice Coil Winding Depth HF 1.7 mm
Magnetic Gap Depth LF 5 mm
Magnetic Gap Depth HF 2 mm
HF Recommended Crossover Frequency 3.0 kHz
Magnet Weight LF 405 g
Magnet Weight HF 14 g
Net Weight 1.8 Kg
Rated Power AES 100 W
Continuos Program Power 200 W
Constructive Characteristics  
Magnet Type Ferrite (LF) Neodymium (HF)
Basket Material Aluminium Die-Cast
Surround Material Treated Cloth
LF Voice Coil Winding/Former Material Copper / Epotex
HF Voice Coil Winding/Former Material Copper / Aluminium
LF Cone Material Surface Treated Paper
HF Dome Material Treated Silk
HF Spare Parts Code Z008955
Mounting Information  
Overall Diameter 105.5×105.5 mm
Baffle Cutout Diameter 91 mm
Mounting Holes 4 holes Ø5 on Ø106 mm
Total Depth 68.6 mm
Thiele/Small Parameters  
Qms 4.05
Qts 0.32
Cms 413 µm/N
Vas 1.5 l
X max +/- 2.0 mm
N 0.51 %
Qes 0.27
Mms 5.4 g
Bxl 7.27 Tm
Sd 51.5 cm²
X var +/- 2.5 mm
Le (1KHz) 0.35 mH
Re (LF) 5.1 Ω
Re (HF) 6.0 Ω
Fs (LF) 102.0 Hz
Fs (HF) 1500 Hz

  • Rated Power measured with 2 hours test with pink noise signal, 6dB crest factor, loudspeaker in free air, power calculated on rated Zmin
  • Power on Continuous Program is defined as 3 dB greater than the Rated Power
  • Sensitivity calculated by Thiele and Small parameters, for SPL average in box refer to frequency response
  • Thiele and Small parameters measured with laser system after preconditioning test
  • Xmax measured with respect to a THD of 10%
  • Xvar value corresponding to a decay of the Force Factor, or Compliance, or both, equal to the 50% of the small signal value.
  • Due to continuing product improvement, the features and the design are subject to change without notice.