Understanding Loudspeaker Coherency

[callas01]

Originally Posted by BigAl87

Don't forget rule number 2 Steve. If Dynaudio meet the specs with all their speakers then the Hawk has to be there which brings me to if my ears are directly beween the Midbass driver and the tweeter I technically have a perfectly coherent speaker persay.

So the Hawk could qualify as a coherent speaker.

whats interesting is that the part I bolded states, that not only does each speakers drives reach the listener at the same time, they also retest to make sure each PAIR of speakers are time-phase aligned.... another reason why dynaudios are so well built.

Dynaudio directivity control
The distinctive driver symmetry with two mirrored drive units is an unmistakable characteristic of the Dynaudio directivity control (DDC) technology. After years of development experience with Dynaudio professional studio monitor loudspeakers, it became clear that many recordings are of superb quality but, due to listening room acoustics, the potential of these recordings could not be fully experienced. In particular, reflections from floor and ceiling boundaries interfere with a faithful, realistic sonic reproduction because of distortions and added time delays. With DDC, Dynaudio has created a technology that effectively reduces these effects. The vertical symmetrical drive unit array and elaborate crossover topology reduce the energy dispersed to the floor and ceiling by approximately 75 percent. The controlled vertical dispersion makes the loudspeaker far less dependent on the room and much less influenced by positioning as compared to conventional designs. DDC isn’t simply arranging the drivers in a symmetrical array. For DDC to succeed, every single detail – from each drive unit to the crossover – must be individually tailored and optimized for this concept. With two tweeters, two mid-range drivers and, depending on the model, two or four woofers, each drive unit complements its identical counterpart in frequency response and phase relationship in such a manner that a carefully defined dispersion characteristic is achieved. This intricate matching is repeated once again for each loudspeaker pair to work together in tandem. DDC is an impressive example of the innovative Dynaudio methodology for loudspeaker design and is truly without equal.