1. The PAS will work with no sub attached at all.
2. It will also work if you use only the lower L1 (just the pole that goes into the base).
3. It will also work if the remote is not hooked up.
But, none of those scenerios is how it is intended.
Another common mistake made is hooking up the sub to the wrong speakon connection on the base. (I did it twice befoe taping off the wrong one.)
Don...consider the 45 day free trial from Bose.
Eddie