FS - BagEnd D12-D 4 Ohm bass cab, two full range custom 12” Eminence ceramic speakers (no tweeter) Deep Red Series, which originally had an intergrated power amp but I removed (& sold) then sealed the hole with ply & hooked up a neutrik speakon. I've only used it a couple of times at studio but last time I paired with my GK 400RB-IV (also FS) & Darkglass B7K and it just roared ! If heavy rock/metal is your thing then this is a fantastic match .. I think these BagEnd cabs like to be cranked.
As much as I love these Bagend cabs the weight is just too much for my ageing back
Check out Talkbass about this brand, old school type construction (18mm ply) & heavy ceramic drivers .. great tone but comes at a price = weight 33kg (bathroom scales), but quite compact 28.5"h x 18.5"w x 15.5"d
Similar spec to this can be found on Bagend site but looks like the Deep Red Series is no longer available so check the birch oiled 212 to get info etc
One of the original drivers had a slight crease in the cone so Bagend sent a brand new replacement which I installed.
These ceramic Bagend speakers (custom made by eminence) are very efficient but don't put out lots of low end which can be a good thing.
Now including a Bagend S15X-D in excellent condition (with roqsolid cover)
https://bagend.com/wp-content/uploads/2015/06/D12-D.pdf
https://bagend.com/wp-content/uploads/2015/06/S15X-D.pdf