subwoofer advice


I would like to incorporate two or more subwoofers into my stereo setup using one or two powered subs (to be purchased) and a pair of Satterberg passive subwoofers that I already own.  My thought was to use a splitter to connect both my speakers and a powered sub to the speaker out of the amplifier (mc2505). 

Is it then possible to connect the passive subs to the powered subs in such a way that they are being powered by the active sub amplifier, rather than the main stereo amplifier?

If so, is it a good idea, and what features do I need to look for in purchasing the powered sub(s).

Any help/suggestions would be most appreciated. 


snapsnap