Abstract: A speaker component mounted into a frame and related structure which is designed to reproduce sound in its most real and true form from an amplifier or other sound source and including a speaker mounting panel for the speaker component, a back wall, a front sound diffusion panel, surrounding a frame with a base resonance chamber and a tenor resonance chamber and including dowels to separate the partition components forming the chambers and further including a sound diffusion receptacle area with sound ports communicating the receptacle area with the atmosphere and where the resonance chambers are airtight with all the components combining to reproduce sound without interference especially in a quadraphonic system.