had you heard the amp power other speakers? It's possible that its just not a very good amp. I haven't heard anything run off an MTX amp, so I can't offer any firsthand help.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>