Dear Wayne,
Thank's for your explanation. But I still confused with your explanation. You said :
"However, if one subsystem is 10dB more efficient but handles 10 times less power, then you really have a matched system even though power requirements are different. At maximum power, both subsystems will generate about the same SPL. Simply attenuate the higher-efficiency subsystem by 10dB, or raise the power of the lower-efficiency subsystem to match."*Do you mean I need to buy another amp for high freq? Or I still can make it with one amp, but lookin for the mid and high loudspeaker that the sensitivity is 10dB lower (I think I must use an attenuator or L-pad here) than my woofer, and power handling around 50watts is match with my woofer?
*And for the passive filter, do I need to make sub with 2way (with low frequency overlap) filter or build a three way filter?
Thank's in advance.
Regards,
Gabriel Temmy