I had picked up this Totem Dreamcatcher sub to mate with the KEF Egg speakers I have on my benchtop at work. It was cheap because the seller said it had a buzzing noise. I liked it because at 7-3/4" wide by 10" long and 11" tall it's the right shape to fit where I need to put it. Of course it's hardly a true subwoofer and probably doesn't even hit the 30hz spec. He was right, it had an incurable buzzing.
Totem had no parts and no schematic, so my electronics wizard friend couldn't fix the Bash amp that's on a 6" x 6-1/2" plate. I could find no other amp anywhere near the 200w spec, so after 8 months of looking at it I today adapted a Dayton SPA250DSP amp by making a 1/2" thick piece of MDF to cover the opening and hold the 7-1/4" x 9-1/2" plate amp. Because the amp is bigger than the opening and the cabinet has twin ports up near the top rear, I have the plate hanging down below the bottom of the cabinet by almost 3". My son whipped up 3-1/2" riser to stick on the bottom, I'll paint it tomorrow and stick it on the bottom of the cabinet with construction adhesive. Done.
What I want to ask the experts here about is stuffing the cabinet. I don't know if it ever had anything in it, but when I took the stock Bash amp off there was none. I put some loose poly-fill in, filling perhaps 1/2 the volume, maybe a little more. I had hooked it up in my office to connect it to my PC and my office sound system to dial in the DSP with the Dayton app. It really sounds remarkably clean and responsive with the PEQ curve I set.
Do you think I should remove the stuffing or leave it? As I said, I don't know if the original owner had tried repairing the defective amp and removed some, but I'd never seen a small sub, sealed or ported, that didn't have some amount of stuffing in there. Pictures tomorrow of the finished unit, after the riser is painted and installed.