A patented expanding mandrel with quick-release fastener ensures a tight fit of the speaker cabinet. The plastic expansion splints ensure a vibration-free connection between the speaker cabinet and the tube. The height of the steel stand ranges from 1,417 to 2,117 mm, is fixed with a safety hook and secured by a clamping screw for a vibration-free and firm fit. Other features include a pull-out guard for the extension tube, an integrated shock absorber and durable powder coating.