First gen brahma. I'm thinking it was a 3 inch coil but I'd have to measure to be sure. I've actually got the original one somewhere as I use it as a pen cup. it's still got the original dust cap on it as well
Ebay is buyer beware central. I typically buy from there, but I find things there in my price range, research the actual product elsewhere, and then find a seller that seems competent.
Research saves a few headaches from happening imo.
Shady people or even people with bad reps that cant personally defend their positions would never get a dime from me. The subs may work well, be designed well etc... but if the man at the top appears at all to not deserve my hard earned money, he simply doesn't get it.
That's the problem these...
I had a pair on an orion 900 back in the day. they were underpowered. Lots of guys around then were putting 1k into them with no problems. They are a sealed box intended sub but I had some success with them ported as well.
Great subs and I wish I still had my pair.
That will probably help considerably. Beyond that, there's not going to be much you can do to quiet it down much without getting too "inventive" ie, fugly.