bravox 3.5

in process of building mtm with bravox 12ohm question 1 is at what freq did pe cross the woofers over at? Question 2 would like to use an audax tm020j5 for the tweeter, could you suggest a 12db high pass circuit? would it be possible to add more woofers in a 2.5 set up to increase mid base?. and can i remove the cap on the woofer as i am electronicaly crossing over at 150? I am hoping to use this 6.1 set up for my computer as i am mixing from 2ch to dts es dvd audio. just looking for any suggestions