Speaker 18 Sound 15NCX750 - 15''/1,4'' Single magnet Neo Coaxial driver - 3'' LF/3'' HF vc - 800W/240W - 97/110 db@1W/1mt | 8+8 ohm

Manual 

• Nominal impedance 8+8 ohm
• Dimensional category 15.5 inch
• Manufacturer sensitivity 98 | 107.5 dB
• Calculated sensitivity 98.02 dB
• Nominal power handling 400 | 120 W
• Max power handling 800 | 240 W
• Bandwidth 55÷4500 Hz
• Recommended min cutoff frequency 1200 Hz
• Sd 881 cm²
• Mms 81 gr
• Cms 132 µm/N
• Le 0.66 mH
• Re 5.4 ohm
• BL 18.4 T.m
• Fs 49 Hz
• Qes 0.4
• Qms 6.32
• Qts 0.37
• Vas 141 L
• Xmax ±5.5 mm
• EBP 123 Hz
• Zmin 6.3 ohm
• Fs / Qts 132 Hz
• Vas * Qts² 19.31 L
• Efficiency 4.5 %
• Calculated efficiency 3.99 %
• Weight ~4.9 kg
• Dispersion 80° x 80°
• Voice coil diameter 2.95 | 2.36 inch
• Outside diameter 393 mm
• Baffle cutout diameter 360 mm
• Depth 185 mm
• Front thickness 14 mm
• Depth after front 171 mm