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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."

seanheis1

Showing 5 responses by james_w514

james_w514's avatar
james_w514
286 posts
 
Yesterday while evaluating DI’s my friend said "I can’t quantify it but they are the best speakers I have ever heard. They are musical instruments"

To me this rings true. When I switch to one of my other speakers I am back to the DI’s in less than an hour no matter how good the other speaker measures in room. At the very least my brain is being tricked by what I am hearing and I couldn’t be happier with the result. If I saw a thread revealing a "gotcha" moment exposing bad measurements it wouldn't change my feelings about the product. 
james_w514's avatar
james_w514
286 posts
 
@seanheis1 you mention the DI’s might not be ideal for midrange junkies and that they are for movies and music with slam.

You feel that way after listening to DI’s? How long did you spend with a pair?

I love the mid range they and they perform beautifully with delicate music. I’d put it right up with the Audio Note AN-E/Lx Hemp I owned previously for mids. Female vocals and classical guitar sound just right. The softer sounding Oscar Peterson recordings are perfect. 
james_w514's avatar
james_w514
286 posts
 
Someone that raves about Totem Rainmakers and is poo pooing on a speaker he has never heard before? that is just plain laughable. Why are the inexperienced so quick to make judgement?
james_w514's avatar
james_w514
286 posts
 
The Mega’ s sound great!

Speakers are a very personal choice so it won’t take long to have others share their negative experiences. I just hope it is after spending time and not just a demo. No complaints here if someone doesn't like them after a long listen. I know it took me about a week to fully appreciate what I had. I recently invited a picky friend over fully expecting him to trash the DI’s and put me in check but it didn’t happen. Expect a smaller reviewer to get a pair soon and go against the grain for increased reputation/noterity. That or they genuinely won’t like them. IMO the greatest strength of the product is the value and the looks have really grown on me.

Insult an Audio Note product to a fan boy if you really want to deal with conflict.
james_w514's avatar
james_w514
286 posts
 
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. 
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