Spot the speakers

onance has made this issue’s ‘Spot The Invisible Speaker’ competition rather easy employs wide-bandwidth Wave Flex drive units which behave as combined high-bandwidth midrange and high-frequency transducers, then a low crossover to carbon-fibre Air Flex woofers which connect to a chamber of air behind the speaker diaphragm, allowing sufficient excursion to produce promised “robust and powerful bass”. A repeatable and simple installation process includes a high-accuracy depth gauge and embedded locator discs to measure the thickness of a finish applied over the surface of the speaker. Six new models are available. For more information visit