The centre of our facility in Yverdon houses a huge anechoic chamber. With a volume of 150m3 it contains 4 tonnes of isolating material and rises up to over 7 meters in height. Prior to packaging and dispatch, every speaker has to pass through the chamber. Here the speakers are tested with a complete audio performance programme; this ensures that the very tight manufacturing tolerances have been achieved. Once past the performance and tolerance test speakers are tested for long term durability under continuous high power conditions to assure maximum reliability. Every speaker is shipped with a comprehensive printout of its measured audio performance; this is our guarantee of excellence and quality.