for a while iwas biamping using two identical amps one on top the other driving the low end of the speaker untlil i noticed that my midbas was in fact better with one amp. bi-amp with the passive cx inside the speaker is a waste and in some cases may produce problems because of cx configuration . you do not get much more , theamp still has to amplifier the full signal it receives at the input even you wasting a portion of it at the output.
To get the dynamic benefits of biamping you have to go active with the inconvenience that this entails. A better way to achieve this is to relieve your speaker of the last 3 octave using subs from say 20to 60 rolling off passively for the top and cutting actively the high from the subs donot make mistake even excellent speakers can get help from a sub when it is properly done. i have piega C-40 and i use sub i only do two channels by the way.
To get the dynamic benefits of biamping you have to go active with the inconvenience that this entails. A better way to achieve this is to relieve your speaker of the last 3 octave using subs from say 20to 60 rolling off passively for the top and cutting actively the high from the subs donot make mistake even excellent speakers can get help from a sub when it is properly done. i have piega C-40 and i use sub i only do two channels by the way.