subwoofer encastrable double haut parleurs MK SOUND IW28S
dimensions (avec grille)   Hauteur  630 mm, Largeur   320 mm, Profondeur 95 mm
découpe Hauteur  580mm Largeur  270 mm
Frequency response 28 – 200 Hz (28 Hz -6dB) 
Impedance  4 ohm
 Sensitivity 88 dB 2,83 volt /1mtr 
Power handling  350 watt Long term cycled input
Special tuned extra mass loaded drivers for “small enclosure deep bass” :
Dual 8 inch drivers with all shared technology from M&K V-sub series : Pulp paper cone / shorting rings / extended linearity in magnet system