1.0mF Solen capacitor on positive lead. .22mH coil across terminals.
Non inductive 4.7ohm resistor. I prefer an L-pad there instead...for varible balancing use, to account for your room acoustics and personal taste. This works well as it crosses the tweeter over very high, but lets the efficiency cut through, without the glare. Put your head close and make sure it is not the mid doing the damage before doing this mod.