General Specifications
Nominal Diameter	530/21	mm/inch
Rated Impedance	8	ohm
Program Power 1	3000	Watts
Power handling capacity 2	1500	Watts
Sensitivity 3	98,5	dB
Frequency Range	30 - 1000	Hz
Effective Piston Diameter	470/18.5	mm/inch
Max Excursion Before Damage (peak to peak)	60/2.36	mm/inch
Minimum Impedance	7.1	ohm
Voice Coil Diameter	115/4.5	mm/inch
Voice Coil Material	Copper
Voice Coil Winding Depth	28/1.1	mm/inch
Number of layers	2
Kind of layer	inside/outside
Top Plate Thickness	15/0.6	mm/inch
Cone Material	No pressed pulp
Cone Design	Curved
Surround Material	Polycotton
Surround Design	Triple roll

Thiele - Small Parameters 4
Resonance frequency	Fs	30	Hz
DC resistance	Re	5.5	ohm
Mechanical factor	Qms	5.5
Electrical factor	Qes	0.25
Total factor	Qts	0.24
BL Factor	BL	33.5	T · m
Effective Moving Mass	Mms	272	gr
Equivalent Cas air load	Vas	440	liters
Effective piston area	Sd	0.122	m2
Max. linear excursion (mathematical) 5	Xmax	10.2	mm
Voice - coil inductance @ 1KHz	Le1K	2.9	mH
Half-space efficiency	Eff	4.50	%

Mounting Information
Overall Diameter	447/21.5	mm/inch
Bolt Circle Diameter	527/20.7	mm/inch
Bolt Hole Diameter	6.5/0.25	mm/inch
Front Mount Baffle Cut-out	512/20.1	mm/inch
Rear Mount Baffle Cut-out	512/20.1	mm/inch
Depth	250/9.8	mm/inch
Volume occupied by the driver 6	6.5/0.229	liters/ft3

Shipping Information
Net Weight	10.8/23.8	Kg/Lbs
Shipping Weight	11.8/26.0	Kg/Lbs

Notes to Specifications
1 Program Power is defined as 3 dB greater than AES power.
2 AES standard.
3 Sensitivity measurement is based on a 100-500 Hz pink noise signal with input power of 2.83V @ 8 Ohms.
4 Thiele-Small parameters are measured after a 2 hour warm up period running the loudspeaker at full power handling capacity.
5 The maximum linear excursion is calculated as: (Hvc - Hg)/2 + Hg/4 where Hvc is the voice coil depth and Hg the gap depth.
6 Calculated for front mounting on 18 mm thick board.