I imported this cab direct from Acme in the US about 9 months ago. Its utterly superb for loud double bass applications and as a hi-fi cab for electric bass. Its the louder 4 ohm version as these are slightly inefficient cabs, requiring a lot of "juice" (500W from an amp is good) to get maximum volume and performance. I absolutely cannot fault this amp for performance. However, I have a weak back and at 50 pounds its too heavy for me to carry in and out of venues. I am going to replace with a lightweight, high quality cab (1x12" or 4x5") for louder gigs with my DB, when my Crazy8 isn't quite up to it.
The Low B2 cab itself is in pristine condition (looks completely new) and comes with a thin slip cover from the manufacturer, which at least prevents knocks and keeps out the elements. The specs are shown here: http://www.acmebass.com/#/products
So this is up for grabs at a very reasonable £400 collected (from West London) to any UK-based musician. This is about a 30% discount to the cost to me, including import duty costs and delivery. I can also post within the UK or overseas, as I have the original packing box, but this would be at cost via a respectable, tracked courier (UPS or similar). I appreciate that this will not be of interest to a US-based TB'er price-wise but just wanted to make clear that we in the UK (and Europe) pay 21% import duty on goods from the US, as well as delivery costs, so this means its much more expensive to buy US-sourced goods for us. Hopefully its good value to a UK or mainland European TB'er though