I have a 12" MTX Jackhammer JH5512-04 with an MTX Thunder 342 2 channel amp. I have it bridged at 340w at 4ohms. The amp has L and R gain, EQ and Frequency knobs. I cant find the specs for the amp online anywhere. Im not sure what the difference between the EQ and Frequency knobs is. None of the knobs have any kind of range on them either. Just