A cry for help to Snell B owners

Hi
Have you ever experienced that a powerful on paper amplifier couldn't bring your speakers to life?
I just encountered this problem .I bought 2(two!) Conrad-Johnson MF 2500A (each is rated at 240 watts per channel) for vertical bi-amping and this combo cannot bring Snell type B to life.I hear high frequencies,upper midrange and bass,no lower midrange and midbass.There is no soundstage,just flat music coming out of the left and right speaker.The burn-in is out of question because i've been running this combo 24/7 for a month already.Before i had (still do) one 13 year old Conrad Johnson MF 200 (rated at 200 watts per ch) and it was moving those speakers with ease.When i look closely at the midrange with the old amp playing,i can actually see the drivers move,while with the new ones i can only feel them move by touching the drivers.
I called CJ office and they are puzzled.I tried reaching Snell but all their numbers are disconnected (the recent one with 978 area code).I know that the amps are not faulty.
The only last step left for me is disconnecting crossover and bi-amp with external one,but i have no idea how to do it and which one to use.Please,help me.