I just bought the M60Ti, M22Ti and VP150 speaker combination for my HT. What are the crossovers (2nd, 3rd, 4th order...) in these speakers and their specs such as cutoff frequency? Furthermore, which ampllifier(s) best match with these speakers and a Denon 3300 A/V receiver? By the way, the speakers sound phenomenal in my living room, 22' W X 22' L X 12' high vaulted ceiling. Thank you.