Gday. I'm wanting to add another cab to my 2x10 SWR Goliath Jnr to add some more lows. Obviously the natural thought is to add a 15". However after looking at the specs on the Eden 210 XST (+/- 2db 30hz to 18khz) it would seem to blow away the 115 XLT (+/- 2db 46hz to 14khz). Does it really? Which would actually be better for adding lows?