18 Sound 8MB500 8" 280watt 8ohm Mid Bass Speaker

95 dB SPL 1W / 1m average sensitivity
51 mm (2 in) Interleaved Sandwich Voice coil (ISV)
400 Watt program power handling
Triple roll suspension for increased motion control
Weather protected tretaed cellulose cone
Lightweight diecast aluminum basket design
Suitable for compact two way and multiway systems

Nominal Diameter 200 mm (8 in)
Rated Impedance 8 Ohm
AES Power 280 W
Program Power 400 W
Peak Power 800 W
Sensitivity 95 dB
Frequency Range 60 ÷ 4500 Hz
Power Compression @-10dB 0,5 dB
Power Compression @-3dB 1,4 dB
Power Compression @Full Power 2,3 dB
Max Recomm. Frequency 3000 Hz Recomm.
Enclosure Volume 10 ÷ 40 lt. (0,35 ÷ 1,41 cuft)
Minimum Impedance 5,8 Ohm at 25°C
Max Peak To Peak Excursion 19 mm (0,75 in)
Voice Coil Diameter 51 mm (2 in)
Voice Coil Winding Material aluminum
Suspension Triple-roll, Polycotton
Cone Curvilinear, Treated cellulose

Fs 74 Hz Re 5,1 Ohm
Sd 0,023 sq.mt. (35,65 sq.in.)
Qms 2,66
Qes 0,51
Qts 0,43
Vas 21,5 lt. (0,76 cuft)
Mms 17 gr. (0,04 lb)
BL 9,0 Tm
Linear Mathematical Xmax ± 6 mm (± 0,24 in)
Le (1kHz) 0,60 mH
Ref. Efficiency 1W@1m (half space) 94,4 dB

MOUNTING INFORMATIONS
Overall diameter 210 mm (8,27 in)
N. of mounting holes 6
Mounting holes diameter 6 mm (0,23 in)
Bolt circle diameter 195 - 198 mm (7,68 - 7,80 in)
Front mount baffle cutout ø 186 mm (7,32 in)
Rear mount baffle cutout ø 184 mm (7,24 in)
Total depth 99,5 mm (3,92 in)
Flange and gasket thickness 14,5 mm (0,57 in)
Net weight 3,4 kg (7,5 lb)
Shipping weight 3,72 kg (8,22 lb)
CardBoard Packaging dimensions 235 x 235 x 150 mm (9,25 x 9,25 x 5,91 in)