First of all I don't run my BX63A crossover for the B460 subwoofer like the manual says. I tap off a pre to amp interconnect to run signal to the BX63A. But I don't use the main out of the BX63A back to the main amp, i.e., I don't use the BX63A to intercept the mains, just a signal to it, and signal out to sub amp.

I've read that it's better to run a sub off the speaker outputs of the main amp vs tapping off a pre signal.

If I were to do that, would running lines off the main amp speaker terminals to the BX63A input work just as well?

Thanks in advance.