Bag End has an new 15 cab and I just bought one. I recently sent bass NW an email asking about a used Bag End S15B-D. It's the big brother to the S15-D cube that we all know and love. The difference is a much larger and unfortuanatley heavier cab with better bass response. I really didn't want to get another bulky cumbersome cab but even though I loved the nice punchy tone I was getting from my 2 cabs, I just wasn't getting the low end that I wanted out of my double S15-D set up. Here is the response from Bass NW. I deleted some things from the email like prices and stuff because I they probably don't want me posting their prices on the internet. "I will try to let you know via e-mail if we get this cabinet in used. But, this is not a very common model and not one that we see often. We just got in a new model of Bag End 1X15" cabinet that is not yet listed on their web site that sounds great. It is called for now the Bag End S-15 CUS (custom) model and will later be called the S15S-D model. It is a 1X15" speaker (same one that is used in the S15-D and S15B-D cabinets) that is built into the same cabinet size as the D10BX-D 2X10" cabinet. So, it is deeper in size and has incredible bass response and output. We just got two in and are really impressed. .....The only thing about the S15B-D is that it is quite bulky to haul around. Please give our retail store location a call if you would like more detailed assistance with this." Any way I just purchased one of these on their recommendation and will let you all know how it sounds when it gets here. can't wait.