I kind of understand.

According to the specs, the amp does delivery about half that power into a 4 ohm load yes.

The orginal question was to ascertain whether i am under driving my subs. I think maybe I am, given they are rated at 375w RMS (1400w peak !! *crazy*). The amp is only giving 195w RMS .. flat out

I don't really want to run the amp flat out as it is liable to clip / distort so I think a bigger amp may be the order of the day.

Seems as though it needs to be rated at around 750w+ RMS into 2 ohms ... any ideas at under 350 UKP?