If you're just running one RCA pair, and they're connected to a subwoofer output at the head unit, then you might have a crossover in the deck that's filtering out the high frequencies before they reach the outputs. The amp should have separate crossover settings for the front and rear output channels. Look for a switch labeled "LP", "HP", and "Full" or something similar.
"LP" will produce only bass, "HP" will produce higher freqencies, and "full" will allow the full audio range to play. But that won't matter if the head unit is only sending bass to the amp in the first place.
Ya sounds like your amp is only getting lows.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.