I used a B-1 series II for years. The sound is fantastic, it worked very well for double bass in a big band and with various combos. Great low end and fantastic detail up top. Good luck with the sale!
Great cabs, and that's good price! I've had 2 for 20 years, used them for everything from DJ-ing to micing classical guitar in front of an orchestra, in addition bass duties. GLWTS