Electro-dynamic transducer (1) including: a main magnetic circuit (2) defining an air gap (15), a moving part (16) comprising a dome shaped diaphragm (17) fixed to a movable coil (18) diving into the air gap (15); a support (20) to which the moving part (16) is suspended; a suspension (26) linking the moving part (16) and the support (20); wherein the support (20) at least partly extends in an inner volume inside the moving part (16), wherein the suspension (26) is fixed, by an outer periphery, to an inner face of the moving part (16), and wherein the suspension (26) is made of an acoustically non emitting material.