Adding a second sub

Well what I am thinking is that I have been looking for a set of NHT 2.5I or 2.9 to no avail.I could just use the subs as a bottom end to the 1.5's and have basicly a 2.5 speaker.

Gentleman,Gentleman,I thought the whole point in posting something on a forum thread is to found out information that you didn't know.If you guys want to go back and forth please start your own thread and stop whoring mine up.

The SW2Si, when combined with the NHT SA-2 monaural subwoofer ampli-fier, comprises the NHT SW2Pi Powered Subwoofer System. For a flatter overall low frequency response and increased clarity,two SW2Si subwoofers may be connected in parallel to the NHT SA-2 subwoofer amplifier, which is designed with enough highcurrent capability to drive two subwoofers (for more power, you may substitute the SA-3 amplifier). Alternately, you can use anexternal crossover and a monaural amplifier of your choice to create your own powered subwoofer system
This is what i needed.

Well right now I have my nht 1.5 running to the reciever and I am using the line level connection on the sub amp to the sub connection on the reciever.Then I'm using the subwoofer out on the sub amp to connected the sub to the amp.

Here is the link to the sub amp I have http://nhthifi.com/current/manuals/vintage/sa_2Man.pdf.
I would like to use the left 1.5 speaker and the sw2pi subwoofer system and kinda of a 3way component speaker.With the top have of the speaker(1.5)and the bottom have (sw2pi).Then do the same for the other side.I just think it would be easier to find anothe amp and sub rather than going to a 2.5I set up.BTW thanks for your helps guys!!!

(I would have have thought that sonically it might be better to take out signals from a Line Level out, run the satelites full range, and set the cross over to blend the sub with the bottom end of the satelite, thereby minimizing the effect of the subs incursion into the upper frequencies, assuming of course that the subs are being located in areas of the room to smooth out bass response etc, not necessarily in the immediate area of the satelites)This is how i use mine in the current config.
Are you saying it would be better to run the 1.5's as satilites?

Thank you guys very,very much.You guys are great.This has been really helpful.I haven't never tried to wire the 1.5 as satelites.I might try that out this weekend and see how it sounds.THANKS AGAIN!!!!