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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
grannyring's avatar
grannyring
6,442 posts
 
This DIY guy says your the Man! Love reading what you did and you have now worked me up into DIY frenzy. I must do something else to my current speakers😊

I have found the types of improvements you outlined above will improve the sound of any and all speakers. Builders must build to a certain price point and we all get that. 

Now i I must smell some solder.....
missioncoonery
1,206 posts
 
So doing the math...$3000 for the DIs...$300 for ungraded version..$500 for paint..$260ish for new woofers,I undersrand you bought flawed finish but if one was to order them today ,basically 4 grand...Why did you stay with eminence,was it simple because of a direct size fit..have to say I consider them, well junk..Did you think about trying better drivers or did you want to stay in a price range.Its appearing to me these speakers are a project DYI,I've upgraded speakers before but normally vintage stuff like caps etc,never something new 
kdude66
1,200 posts
 
grannyring,

Thank You very much,

Get that soldering iron fired up no telling what you may mod next.


Kenny.
kalali's avatar
kalali
1,977 posts
 

missioncoonery, why the sour grapes man? The guy answered the question you asked. He bought something he liked but wanted to make it better. We all do that to everything we buy, to the extent our abilities allow. I bought a brand new Harley and the first thing I did was change the intake and the exhaust to make it "better".

What am I missing here?

schw06
88 posts
 
@kalali- you're not missing anything. I think if you do a google search for the term "internet troll" it will become very clear. It's a shame. This was a helpful thread otherwise.
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