Hey Matt, former pio user here.

Page 69.

http://www.pioneerelectronics.ca/StaticFiles/POCEN/Files/VSX-1126-1326%20Manual.pdf

You can set your crossover setting by using the manual speaker setup function. The remote used to have a direct access button to that menu. Not sure now. To have the subs and mains play together you used to set the mains to "PLUS" (LARGE\SMALL\PLUS used to be options) not sure if your model has now changed.

IIRC You have to set your main speakers to small, then sub to yes, then it will let you choose the crossover.

Hope this helps.

Last edited by Serenity_Now; 03/09/16 08:02 PM.