Howdy friends. We've been using the SWR Goliath 610 from our old bass rig w/the SVT we just procured ('74 blackline). It sounds okay, but we're thinking a sealed cab would be better. We're considering the BergNV610 or an Ampeg 610 either of which will require more cash, but an interesting trade was proposed today: an Ampeg 810 Ultra? for the Goliath. I can't seem to find much info about this cab and am hoping the local Ampeg gurus can help. He emphasized it was not an SVT but an Ultra. We're not opposed to spending a little more money, but a straight across deal is always nice. Thanks!