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Tekton Double Impact & Comb Filtering
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."
"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."
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- 362 posts total
This was a good response from another thread on the Tekton phenomena. shadorne5,843 posts08-23-2017 9:13am@stfoth |
I invite anyone that questions the performance to put their system of equal or double the value up for comparison against the modest Pass Labs X250.5 & Double Impact pairing I have in my listening room at the moment. If you are passing through the BC interior from Vancouver, Calgary or anywhere this is an open invite. Postulating about gear is nice and all but let’s do some real world testing and comparisons. I’ve always got pricey speakers and amps around to demo against them as well. I would welcome some criticisms at this point. Worst case scenario you will leave with your doubts and reservations confirmed while talking shop with a fellow audio nut. Asking how they fair over time is is a great question that I wonder about myself. With the ever changing models it is hard to know. So much has come and gone in this silly hobby over the decades. |
- 362 posts total