JBL ACK1, Accessory Caster Kit for SRX900 Series Subwoofers Closed At the core are four

At the core are four of the ProX XT-S492 Single Tube Truss sections which are made with 2mm EN-AWT6 6082 Aluminum for safety and strength

Cooling System: Variable-speed fan with rear-to-front airflow

EAN: 4016842105373

Condenser (OH-2)

JBL ACK1, Accessory Caster Kit for SRX900 Series Subwoofers Closed At the core are fourThe JBL ACK1 is a universal accessory caster kit used for transportation of compatible JBL products. The kit includes four tour grade casters and the hardware necessary for attachment to the cabinet. The housing and wheels are black for a discreet look even in situations where the rear of the product is facing the audience, as in cardioid subwoofer stacks. Each caster has a load rating of 100 kg (220 lbs), and the wheels are made from black