Hi David here.Greetings and salutations to all my fellow audiophiles.Today,I wanted to discuss sub crossovers and the use of crossovers in general within our systems.It would be interesting to know which ones you are using {XVR-1,Bryston,Marchand,etc.}and your preferences and experiences with trying to phase independent subs with towers.Hopefully this topic will not pull zeroes my first time out.Regards,D.