^^^thanks for your info,

BTW my subs are 4ohms each. if i connect it in series it will be 8 ohms, if in parallel it will become 2 ohms., right?

so i should be looking for an amp that has an impendance of 2 or 4 ohms, right?

what will happen if i connect it to 1 ohm AMP?

and what is the optimal wattage of AMP i should look for? should i consider mono AMP coz i got already an AMP for my seps and coaxials?

again: (2 subs, 200/400w, 4ohms each)