Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
I would simply split the source signal and run one pair of R/L lines to the mains and the other pair through an inline filter and onto the amps for the flanking subs.
Of course, this assumes both subs are the same and placed flanking the mains. Distributed subs don't need to be the same, so I'd run the Morel and the Boston Acoustics as distributed subs. You could probably leave them right where they are.
Don't know if that answered your question or not but that's what I would do.