Abstract: A speaker transducer assembly is disclosed which includes first and second speaker diaphragms supported on a frame in over and under juxtaposition. Each of the speaker diaphragms has a central opening defining an inner periphery which is attached to a voice coil form for coaxial movement therewith and in unison. An intermediate baffle is coaxially positioned between the speaker diaphragms to define upper and lower, separately vented chambers. The upper chamber is vented through an outlet in the region of the outer peripheries of the first speaker diaphragm and the intermediate baffle; similarly, the lower chamber is vented through an outlet situated in the region of the outer peripheries of the second speaker diaphragm and the intermediate baffle. Preferably, the two vent systems have different vent exhaust areas to obtain stagger tuning and thus achieve a split of the deepest frequency load.