Hi, My subwoofer is stuck in standby mode! I've tried doing what was suggested in similar threads ie. turning up the output level and increasing the crossover frequency, but still no joy. I'm using a Sony STR-DG910 amp, with the speakers set to small. As soon as I turn the subwoofer on, the light goes green, which means it's in standby mode. I've tried playing movies with explosions and stuff, but it doesn't change. Can anyone help me?