Rubens' Tube 2 M. Designed by Timstar in response to customer enquiries, the Rubens' Tube provides memorable demonstration of standing waves.The Rubens' Tube consists of an 10 cm diameter aluminium tube with row of small holes drilled along the top, and 15 loudspeaker mounted at one end, and is supplied with instructions.Natural gas or LPG can be used, with length of burner tubing to connect it to the supply.The speaker can be driven directly using signal generator with power output, but Rubens' Tube Driver (SO180900) is recommended for best effect.See our website for more information and video links to Rubens' Tubes in action.Designed and manufactured in the UK.