Here are the specs..
SPL

Short term RMS @ 1 m 95 dB SPL
Peak per pair with music material 105 dB SPL @ 1m
Drivers

Bass 105 mm (4")
Midrange - Treble 19 mm (3/4") metal dome
Crossover frequencies 3 kHz
Free field frequency response 66 - 20 kHz (± 2.5 dB)
Amplifier power /ch

Bass 20 W
Midrange/Treble 20 W
Speaker dimensions (H x W x D)

mm 226 x 151 x 142 mm (Height with Iso-Pod™ 242 mm)
inches 8 7/8 x 6 x 5 5/8" (Height with Iso-Pod™ 9 1/2")