http://windsound.ro/shop/difuzoare/difuzor-mb-ferita-15mb700/

103 dB SPL 1W / 1m average sensitivity
75 mm (3 in) Interleaved Sandwich Voice coil (ISV)
400 W AES power handling
Excellent transient response
Additional cone damping treatment
Improved heat dissipation via unique basket design
Suitable for compact two way, multiway and horn loaded midbass applications
GENERAL SPECIFICATIONS
Nominal Diameter 380 mm (15 in)
Rated Impedance 8 Ohm
AES Power 400 W
Program Power 600 W
Peak Power 1200 W
Sensitivity 103 dB
Frequency Range 45 ÷ 4300 Hz
Power Compression -10dB 0,6 dB
Power Compression -3dB 2,0 dB
Power Compression Full Power 3,3 dB
Max Recomm. Frequency 3000 Hz
Recomm. Enclosure Volume 75 ÷ 130 lt. (2,65 ÷ 4,6 cuft)
Minimum Impedance 5,9 Ohm at 25°C
Max Peak To Peak Excursion 23 mm (0,88 in)
Voice Coil Diameter 75 mm (3 in)
Voice Coil Winding Material aluminum
Suspension Multiroll, Polycotton
Cone Curvilinear ribbed, Treated paper
THIELE SMALL PARAMETERS
Fs 42 Hz
Re 5 Ohm
Sd 0,085 sq.mt. (131,75 sq.in.)
Qms 4,6
Qes 0,31
Qts 0,29
Vas 202 lt. (7,14 cuft)
Mms 73 gr. (0,16 lb)
BL 17,6 Tm
Linear Mathematical Xmax ± 5,5 mm (± 0,22 in)
Le (1kHz) 1,2 mH
Ref. Efficiency 1W1m (half space) 98,9 dB
MOUNTING INFORMATIONS
Overall diameter 387 mm (15,23 in)
N. of mounting holes 8
Mounting holes diameter 7,15 mm (0,28 in)
Bolt circle diameter 370 - 371 mm (14,55 - 14,6 in)
Front mount baffle cutout ø 353 mm (13,90 in)
Rear mount baffle cutout ø 357 mm (14,06 in)
Total depth 167,5 mm (6,59 in)
Flange and gasket thickness 19,5 mm (0,76 in)
Net weight 8,3 kg (18,3 lb)
Shipping weight 9,4 kg (20,75 lb)
CardBoard Packaging dimensions 405 x 405 x 214 mm (15,94 x 15,94 x 8,43 in)