I recently bought a new sound set up in place of my Ampeg BA210. I bought a used British made Trace Elliot GP7SM 130 amp to power a used Bag End 15 cabinet. Although I am extremely pleased with the tone (especially the midrange ) that the amp and cabinet produces, It doesn't seem to put out that room rumbling low end I expected from a 15. The same room rumbling lows that my Ampeg could produce with the two tens. Am I missing something or might I have something connected wrong? This is the first time I have had a separate amp from the cabinet. Is there a way to maybe add something to get the lows I want?