hk audio pro classic 12 crossover tuning

i have this speakers at home. they were sold with subwofers but i did just buy the 2 boxes with tweeters mids and some basses.


now i thought there might be a low pass filter on the crossover. if i could disable this i could gain more bass from those boxes.


could someone who is more experienced in electronics tell me what to cut or bypass on the crossover? or if a low pass filter is present at that crossover?


hk audio pro classic 12 crossover - Album on Imgur