So I have a beautiful Low Down Sound 610 I had made a few months ago. I've always loved big cabs, but most 810's are just too heavy. I had don build me a 810 sized 610, with ceramics, that weighs under 100 lbs. It has 6 Beta 10 a's and is ported all over, front and back. It lets me dial in an old school tone with a bit more 'oomph that I was never able to get out of my nv610. I use an Ashdown ABM 500 head. So the other day I used my had into a friend's Aguilar GS 410 with my band. It seemed MUCH louder at with the volume dial much lower and I was able to sit with the mix much better, most of all, i felt I was much louder. I know custom cab builds can sometimes result in a dud, but can anyone explain what might be going on?