Check the listing for details. JBL CBT 50LA-1 Black Line Array Column Single Loudspeaker. Color: Black, Condition: Used, Made in China. Listed at 240.00 USD. The JBL CBT 50LA-1 Black Line Array Column Single Loudspeaker is a high-quality pro audio speaker that offers superior sound performance. With its sleek black design and wired connectivity, this speaker is perfect for musicians and audio professionals looking for a reliable and powerful sound system. The JBL brand ensures top-notch quality and durability, making the CBT 50LA-1 a popular choice for those in need of a professional-grade loudspeaker. Wall mounting bracket not included in price. Four mounting brackets are available upon a request first come first serve. One speaker has visual dents in the front grill, but plays perfectly. This will be the last speaker shipped out unless request requested.