Originally Posted by
Rusnzha
A 9 Volt battery it is. They will last as long as the shelf life of the battery. There is no upper cutoff in the L100, these are simply hi pass for the mid and tweeter. I used Solen caps from Parts Express for the main caps. These are much better than stock, but not premium caps so I bypassed them with audiocaps also from Parts express.
The sound is much more clear and transparent with the modified crossover. This is really wierd, but even the low end seemed to tighten up quite a bit. I believe this is due to the better clarity of the bass harmonics in the midrange speaker.
I built them onto the same board as the stock crossover so they aren't the prettiest things in the world, but the appearance and the operation of the pots is unchanged.
If you are more comfortabe using a crossover with inductors, your best bet would be to follow porschedpm's suggestion go with something like the crossover in the 4412, but I'm not so sure it would sound like an L100 anymore if you do this. Good luck!