Mark, thanks for the reply. As usual, I need to summarize it back (and ask a few more questions) to make sure I understand this.

1)If I set the fronts to “large” and they now get “the full frequency range of that recording”. What frequencies does the sub get?

2)If I set the sub’s crossover to 60 Hz, I now understand it is not an absolute cutoff number. How does the receiver now the that crossover is set at 60Hz? I thought it was a one-way communication from the receiver (output) to the sub (input)

3)It seems to me I should forget I ever saw a sub crossover switch.

Sorry for the additional questions. I’ve been known to look at things different and ask “odd” questions.

Thanks again