DD Audio CT28 86.10 EUR 64.58 EUR Available BUY Article Number: CT28 Share Information Reviews Driver Size 28mm Watts RMS50-125 VCD 28mm ImpedanceS4 Frequency Response - Hz3k-25k Fs - Hz 1,4k Mounting Diameter -in 1,89 Mounting Depth - in0,5 Shipping Weight - lbs2.