I've used new Version of REW, M-audio Sonica USB sound card & Manual Radioshack meter to generate housecurve.
SB12+ housecurve 
PC Plus 25-31 wth upgraded 12.3 driver 
PC Plus 25-31 with old 12.2 driver 
I had phase problems while running two subs together, but sorted out manually. I've the wow factor with most of the materials thrown in. I'm running music from squeezebox->Sony STR-DA3200ES and movie from Toshiba HD A1 (LPCM)->Sony STR-DA3200ES
Still i'm wondering how can I calibrate both the subs together
any comments, suggestions much appreciated.
thank you
sunil