Like many of you, I have been pondering purchasing these speakers but am very curious about the unusual tweeter array. I asked the smartest speaker person that I know (he is a student of Sean Olive) about the design and below is what he had to say.
"In theory it could work, but the driver spacing means that the crossover point would need to be very low. He is using the SB acoustics tweeter which is 72mm in diameter, center to center on the outside opposing drivers is around 5.7 inches, which is about 2400Hz. This means that combing would stop between 1/4 to 1/2 of the wavelength (between 1200-600Hz) is where the outside tweeters should start playing nice with each other. Since he is not using low enough crossover points he has created a comb filtering monster. Now while it's not the great point source that was promised, it's no worse than most line arrays and the combing will average itself out given enough listening distance.
The MTM spacing on the other hand is ridiculous. Hopefully he is cutting the top end off on one of those midrange drivers to avoid combing."
He owns the Devore and justified the price to himself based on how they sounded in his room. He does not seem unhappy with the choice. Not sure how that is attacking the speaker. The quote was taken completely out of context with the meaning of his entire post. Are you looking for a reason to be offended?
The statement questioning the the cost difference of internal parts between Devore and the Double Impact hardly seems like an "attack". Just a reasonable observation. I suppose it is a matter of interpretation and level of one's sensitivity. Charles
No. And no. No attack on DeVore or Harbeth. As charles1dad kindly stated it is a reasonable observation of many speakers internally. You might do your own investigation, you might be surprised in what you find out. Best, mikirob
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