Thanks everyone  - will check Bill's Simplex cabs. Had a Jack 2 x 12 in the past, very nice. I didnt build it though - bought it here on BC
 
	I've tried WinSD in the past, but not being a techie, i got confused over the graph results. When i fitted 4 Beyma SM/110's to my 2 other cabs,  Stevie / Phil etc worked out all the port sizes and i ended up with a very nice pair of 2x10 cabs. I even bought the Beymas on their recommendations
 
	Stevie - those plans are for the Colossus drivers,  which top out at 1.5khz  , so does that mean they're more Sub than my Sovereign, which tops out at 3.5khz ?
 
	125 litres is way better than the Peavey cab,  and this is the biggest volume Fane state ( as you can see in Fanes recommendation )  and i wonder if that's because its a Sovereign, and not a Colossus, which i presume needs more low end, and therefore a bigger design ?  I could be talking rubbish - i wouldnt know