http://www.audioheritage.org/vbullet...l=1#post390896
This post read please.f
Ft
Original values are correct
TWhen you go off the reservation and mix different schematic for mid and HF we cannot guarantee the outcome but the filter values for the 2123 are correct in the 4344mk11 schematic.
The 2122 and 2123 are slightly different drivers.
As l recall the 2123 is slightly f sensitive and tthe low end response is different.
The 2122 was specifically designed for the 4345 monitor.
Unfortunately l am not in a position to provide details of the 2245 filter right now.
NFilters follow a mathematical transferfunction denoted by filter poles usually 1-4 poles in analogue filters.
1 pole is a 6 db slope...usually a very gentle slope but no good for the 2245.
3 pole is a 18 db filter and is better for the 2245.
4 pole is 24 db and is steeper slope and can be used for the 2245.
Do a search of the 4345 monitor.
The concept of bi amping is simple enough.
DO NOT use a passive crossover for the 2245.
I suggest acquiring a adjustable active filter like the Ashley and adjust the level until it seems subjectivity correct.
Anywhere from 250-340 Hz is going to work.