B&C DE 750, 2" Titanium-Pressure chamber driver, 3" Alu - Rectangular wire moving coil, 140W cont. programm, 108 dB 1W/1m on ME 75 horn, TF>800 Hz, 6,4 kg, size .180 mm, Tiefe 90mm, as 1,4" Treiber DE 700 and DE 750