Article numberPTT6.5X04-NFA-01
Woofer Series-
Woofer TypeBass-midwoofer
Nominal Diameter6.5"
Power Handling (RMS)250 watts
Power Handling (max)-
Continuous Program Power80 watts
Impedance (Z)4 ohms
Sensitivity88.7 dB @ 2.83V/1m
Frequency Response-
Voice Coil Diameter39 mm
Magnet Weight-
DC Resistance (Re)3.7 ohms
Voice Coil Inductance (Le)0.38 mH @ 1kHz
Resonant Frequency (Fs)30 Hz
Mechanical Q (Qms)5.8
Electromagnetic Q (Qes)-
Total Q (Qts)0.27
Diaphragm Mass Inc. Airload (Mms)26.7 g
Moving Mass Of Diaphragm (Mmd)-
Mechanical Compliance of Suspension (Cms)1.04 mm/N
Surface Area of Cone (Sd)132.7 cm²
Volume of Displacement (Vd)132.7 cm³
BL Product (BL)8.1
Compliance Equivalent Volume (Vas)25.9 liter
Maximum Linear Excursion (Xmax)10 mm
Driver's Mechanical Losses (Rms)0.88 kg/s
Cone / Diaphragm MaterialProprietary Fibre Mix
Surround MaterialNitrile rubber
Voice Coil Wire MaterialAluminum
Voice Coil FormerFiberglass
Dual Voice Coil-
Basket / Frame MaterialAluminum alloy diecast
Magnet MaterialFerro-magnetic
Shielded-
Overall Outside Diameter176 mm
Overall Depth90.2 mm
Baffle Cutout Diameter145 mm
Bolt Circle Diameter166 mm
# Mounting Holes6
Mounting Hole Diameter5.1 mm
Sealed Volume-
Sealed F3-
Vented Volume-
Vented F3-