Hello Brian,
It's about 450 Watts thro' the internal 12" and definitely 650 Watts with an extension 8 Ohm cab. It has been rigouresly tried by Slap it hard with his DBass, believe me a DB has some waft, it was good with the gain at 3o clock anf the main at 2 o clock with the tone controls at 12o clock. The secondary parametric EQ can be switched in or out and allows you to fine tune the sound. There is a ' Retro' switch which give a little bit of warmth and a 6 DB boost button it is also switchable Active or passive.
Driver 12” 97dB
HF driver 80 degree dispersion
Frequency 80Hz – 18KHz +/- 3dB
Response 45Hz – 20KHz -10dB
Xover 12dB / octave 2 way
Power 450 Watts
Impedance 8 ohms
Connectors 2 x Speakon sockets
Dimensions 43.2w x 37.8d x 56.0h cm
Weight 21Kg
There you have it
Regards
Brian
http://www.mcgregoramps.co.uk/?page_id=456
Check this out, it is not me on the Bass!