SPEAKER
1x12"
TWEETER
piezo
BASS REFLEX
rear
IMPEDANCE
8 ohms
SPEAKER POWER HANDLING
400W RMS (AES Standard)
AMP OUTPUT POWER
500W @ 4 ohm / 300W @ 8 ohm
PREAMP:
solid state
FREQUENCY RESPONSE
45 Hz to 18 kHz
CROSSOVER FREQUENCY
3.5 kHz
SENSITIVITY
99 dB SPL
WEIGHT
29.3 lbs / 13.3 kg
HEIGHT
17 in. / 43.2 cm
WIDTH
15.3 in. / 38.3 cm
DEPTH
14.1 in. / 35.8cm

http://www.markbass.it/products.php?lingua=en&cat=3&vedi=41