Nominal Diameter		320mm(12")		Nominal Diameter		380mm(15")		Nominal Diameter		460mm(18")
Nominal Impedance		8ohm		Nominal Impedance		8ohm		Nominal Impedance		8ohm
Minimum Impedance		6.4ohm		Minimum Impedance		6.2ohm		Minimum Impedance		6.3ohm
Nominal Power Handling(AES)		350W		Nominal Power Handling(AES)		1000W		Nominal Power Handling(AES)		1200W
Continuous Power Handling		700W		Continuous Power Handling		2000W		Continuous Power Handling		2400W
Sensitivity(1W/1m)		99dB		Sensitivity(1W/1m)		96dB		Sensitivity(1W/1m)		97dB
frequency Range		50-2000Hz		frequency Range		35-1500Hz		frequency Range		35-1000Hz
Voice Coil Diameter		76mm(3")		Voice Coil Diameter		100mm(4")		Voice Coil Diameter		100mm(4")
Winding Material		Aluminium		Winding Material		CCAR		Winding Material		CCAR
Former Material		Glass Fibre		Former Material		Glass Fibre		Former Material		Glass Fibre
Magnet Material		Ceramic		Magnet Material		Ceramic		Magnet Material		Ceramic Ring
Winding Depth		16mm(0.62")		Winding Depth		25mm(1")		Winding Depth		25mm(1")
Magnetic Gap Depth		10.5mm(0.4")		Magnetic Gap Depth		12mm(0.5")		Magnetic Gap Depth		12mm(0.5")
Flux Density		1.05T		Flux Density		1.1T		Flux Density		1.1T