Technical specification This kit includes 2 x 100 mm (4″) woofers, 2 x 20 mm soft dome tweeters and 2 x 6 dB/octave high-pass crossovers. Max power 100 W – Nominal power 50 W Frequency response 80 Hz – 30 kHz Sensitivity 90.3 dB – Impedance 2 Ω Composition Woofer: Original BLAM composite basket reinforced with fiberglass High quality treated cellulose pulp membrane Butyl rubber surround Long life “Conex” damper 25 mm (1”) voice coil on kapton former 70 mm x 15 mm ferrite magnet Thick magnetic circuit (4 mm) High quality 20 mm (3/4”) soft dome tweeter 6 dB/octave high pass crossover Tweeter level adjustable to 0 dB or attenuated to -3 dB