a sub bass , bass and low mid frequency loudspeaker incorporates multiple loudspeaker drivers arranged in a semi - circle configuration contained within an enclosure . the symmetric multi - horn invention enables all associated loudspeaker drivers to couple their energy in phase coherence and time alignment to form one coherent sound wave upon exit of the loudspeaker . low frequency sensitivity is greatly increased upon exit from the loudspeaker without creating resonance or transient decay . additional loudspeakers can be added to form a larger system that maintains phase coherence and time alignment over all the loudspeakers contained in the system . each additional loudspeaker added to the system increases low frequency sensitivity .