I know the Contrabass is not necessarily a DIY subwoofer although kits have been offered in the past but it seems I have met a few Contrabass owners here in the past. By days end today or tomorrow I should have a tracking number for my Contrabass subwoofer. I found a deal that I could not refuse so I jumped on it. I was just about to pull the trigger on a Tumult subwoofer though so now I will wonder what I am missing ,likewise if I went with a Tumult I would wonder what I was missing with the Contrabass. The Contrabass deal will most likely never happen again though so I had to go with it and as a bass enthusiast I will feel more complete having tryed out a Contrabass. How will the output of a Contrabass compare with a single Tumult? I was going to seal the Tumult in around 3cuft and based on what I have read about it I am fairly confident that this subwoofer would be very satisfying for both music and movies. How does the Contrabass perform in the music department? Lastly , I am putting the Contrabass in my 8.5' x12' HT room , as I understand it I am going to have to EQ the heck out of it and buy an amplifer that can drive anything. What is a good amp and EQ for the Contrabass?