Non Bose Wiring Diagram

[Kaane]

Anyone have a non Bose Allroad stereo diagram?

I know the 4 speakers are driven from the head unit, how is the rear sub connected? Is the amp using the rear speaker outputs? or a separate output from the head unit?

[Kaane]

Got my ELSA fixed and found them. Seems the rear subs are driven like the bose from a low level output from the head unit.