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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
mofojo
517 posts
 
So your off of the measurement kick now that you've been called out? 
No one ever said they were pretty. I think they look pretty obnoxious but sure as hell don't sound like econo box speakers. But hey if form over function is your thing ... 
erik_squires
5,268 posts
 
@mofojo,

If that was directed at me I don't see the dots you are trying to connect.

I've always (starting months ago) said they were interesting and I would probably recommend listening to them based on design and measurements. I've also said that one of the innovations was IMHO getting the price so low for the parts quality. 

I have not however said I liked their looks, had listened to them or that they had remarkable efficiency.

Honestly this discussion has generated a tremendous amount of emotional energy I find a little left out from. I'm not all that passionate either way.

Best,

E
charles1dad's avatar
charles1dad
6,996 posts
 
It seems to me that mofojo was referring to 213runnin.
Charles 
mofojo
517 posts
 
Correct
stfoth
435 posts
 
@kdude66 .  Thanks.  In your estimation, the latest magic is from the seven tweeter array?  I'm not sure how the vertical three tweeter are wired/crossed.  From the site, I thought maybe they were set up similarly, just with three.  Maybe that includes the Enzo 2.7.  A good question when I call.

@craigl59.  I've been using a couple panels from GIK, here and there, especially behind speakers and behind the listening position when either or both are "too close" to the wall.  I'm already pushing the WAF limits...  If I start putting pillows around, there will be blood.
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