I have a pair of technics a51 floorstanding speakers. They are three way, 12" 3" 1". I believe they are an old japanese model or something. I have no idea where to begin to upgrade them. But I know the box for each speaker is huge and I would love to have 12" subs on my fronts to...

I picked up a pair of these along with the matching surrounds, SB-S25, for $35 at a yard sale this past weekend. I searched on the internet for more information about them and can't find much. They are amazing speakers! The best I've ever heard, and they look superb! I can't believe there isn't...