You have to listen to music and set the high and low freq's to cut off notes below what the sub can play, or what is inaudible. (around 25 I would say) and set to cut off high notes that are also inaudible (120ish) These are just assumptions as my amp is set to match my cars settings and would be set differently in a different situation/car. You need the know what voltage from the preouts you are geeting from the cd player and set the amps gain accordingly so 1v preouts= buy a new cd player!
Totally read your question wrong. I though you wanted to know how to "tune" your amp not know the specs of the subs, sorry dude dont know the subs unless you mean Type X from alpine....dont know any c4 edition subs........
