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Any box loudspeaker design however sophisticated, is bound to perform badly because from the laws of physics it does not cooperate well with the room – the necessary recreated reflections will be unnatural and colored. This is very easy to understand. Just stand behind a box speaker and listen to the horrible sound radiating in that direction. This sound will eventually reach your ears mixed with the direct sound and other undesired reflections from nearby walls, roof and floor, plus the unwanted sound emanating from cabinet vibrations.
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A PERFECT8 loudspeaker on the other hand radiates symmetrically forwards and backwards, nothing at all sideways, and only minimally towards the floor and the roof. The dramatic effect is that a listener may sit behind the system and still enjoy a great sound stage. Reflections created from the clear backwards radiation are necessary and desirable – this is optimal for a natural sounding result.
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"The laws of physics put unbreakable shackles on any conceivable box loudspeaker design. New and innovative approaches are required to truly advance the state of the art."
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Moreover, from the laws of physics, the box speaker will excite more resonances, or standing waves in the room. These standings waves are "the sound of the room" and depend on the physical dimensions of the room and the reflective materials of the walls, floor and roof. The standing waves can be very detrimental and are often perceived as an unnatural booming sound in the bass or other severe irregularities. Physics research clearly shows that a dipole design – a PERFECT8 loudspeaker – with symmetrical forward and backward radiation, excites far less of these standing waves.
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Any box loudspeaker is bound to create vibrations in the cabinet surfaces. These vibrations are usually addressed through stiffening the cabinet structure with various methods. Our studies show however, strong vibrations persist or may even worsen, and overall are quite detrimental to the perceived sound. The cabinet sides will be secondary sound sources producing significant sound output at specific resonance frequences, strongly coloring the sound. The decay of these vibrations will last for tens of milliseconds causing later unrelated sounds to sound unclear and jumbled.
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