An audio loudspeaker system is provided which consists of an enclosure having a front wall, a rear wall with a plurality of circular openings, a pair of side wall, a top wall and a bottom wall. A plurality of loudspeaker components are supported on the front wall of the enclosure for radiating sound energy therethrough and having varying frequency ranges. A plurality of tubular ducts are supported in the circular openings in the rear wall and extend inwardly into the enclosure to exhibit a tuned acoustic frequency to the loudspeaker components having the lowest frequency ranges.