- Article number
- PTT4.0X08-NFC-01
- EAN
- 8785256843596
- Nominal Diameter
- 4
- Impedance (Z)
- 8 ohms
- Sensitivity (SPL at 1m / 2.83V)
- 82.3 dB
- Voice Coil Diameter
- 30 mm
- DC Resistance (Re)
- 7.1 ohms
- Voice Coil Inductance (Le)
- 0.53 mH @ 1kHz
- Resonant Frequency (Fs)
- 40 Hz
- Mechanical Q (Qms)
- 4.3
- Electromagnetic Q (Qes)
- 0.39
- Total Q (Qts)
- 0.36
- Diaphragm Mass Inc. Airload (Mms)
- 11.8g
- Mechanical Compliance of Suspension (Cms)
- 1.33 mm/N
- Surface Area of Cone (Sd)
- 56.7 cm2
- Volume of Displacement (Vd)
- 48.2 cm3
- BL Product (BL)
- 7
- Compliance Equivalent Volume (Vas)
- 6.1 liter
- Maximum Linear Excursion (Xmax)
- 8.5 mm
- Driver's Mechanical Losses (Rms)
- 0.7 kg/s
- Cone / Diaphragm Material
- Proprietary Fibre Mix
- Surround Material
- Nitrile rubber
- Voice Coil Wire Material
- Aluminum
- Voice Coil Former
- Fiberglass
- Basket / Frame Material
- Aluminum alloy diecast
- Magnet Material
- Ferro-magnetic
- Overall Outside Diameter
- 125 mm
- Overall Depth
- 78.5 mm
- Baffle Cutout Diameter
- 100 mm
- Bolt Circle Diameter
- 115 mm
- # Mounting Holes
- 6
- Mounting Hole Diameter
- 4.2