Unfortunately Dave, I am suggesting an amp of the same power range of the A1400, but as we have been mentioning there are some less costly alternatives. Luc, seems to be liking his Behringer and many others have the Crown XTI1000, much cheaper options to drive the M80s.
And I would also be looking at upgrading the other 2 subs to the same quality of the Paradigm. If they were able to contribute as much to the system as the Servo does you might find you won't need to run the Servo as high.
Just wondering how you calibrated all 3 subs? Maybe this is where the issue lies.
Each should have been calibrated to the same level as the speakers with the other subs off, then all 3 subs should then be turned on. This would net you 9db(is my math right?) gain. Audyssey isn't set up to handle multiple subs correctly. If the 9db is too much you could set each sub 1 db less than the speakers and achieve 6db gain, etc.
