balanced line level HPF any schematic... check forum, there was one for LPF but link is dead 
should i just use 2 separate passive HPF and connect it to hot and cold, or should i make it unbalanced first then HPF back to balanced again ???
i am gonna choose the cap value with trail and error, with measuring actual room response..
hot -----cap----+------- out
+res to gnd (180k)
cold-----cap-----+--------out
+res to gnd(180k)
gnd------------+connect to resisitors----- gnd
edit: i want to get 100hz roll_off from bigger speakers, close to ns10's
should i just use 2 separate passive HPF and connect it to hot and cold, or should i make it unbalanced first then HPF back to balanced again ???
i am gonna choose the cap value with trail and error, with measuring actual room response..
hot -----cap----+------- out
+res to gnd (180k)
cold-----cap-----+--------out
+res to gnd(180k)
gnd------------+connect to resisitors----- gnd
edit: i want to get 100hz roll_off from bigger speakers, close to ns10's