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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
kdude66
1,200 posts
 
grannyring,

You bring up some good questions related to this review,
I will have to read it again more thoughts to follow.

Kenny.
kdude66
1,200 posts
 
grannyring,

I read the review again just for clarification for me,
Overall I found the review kinda spotty and not that easy to understand the reviewers overall thoughts.He has the spec wrong on the sensitivity,the brilliance is rated 94db at 2.83 volts at 1M and not 94db 1w at 1M.

In my personal and experienced opinion the brilliance and the DI's are like comparing apples to oranges overall,I Offcourse have not had the chance to hear the brilliance speaker but I have heard the pendragon and wasn't that impressed.But as you know I truly love the sound I'm getting from my DI's.

The reviewer had a non upgraded pair which could be a huge difference in sound when he spoke of etched treble response,a upgraded crossover would probably take care of that issue,the bottom line in his review is the ratings he gave at the bottom using a note rating system which shows each category doing well except the fit and finish category.

The obvious difference that I see also is the single 8 inch woofer plays all the way up to 800hz and you are going to get a lot of voice at that frequency range and the woofer is so far away from the other drivers.This is a speaker you probably would want to sit 10ft or more away from to get the most coherent sound.

Remember the Di woofers are crossed at 250 hz and very little voice is going to be in that frequency range,just a thought.I honestly would rather read a review on the Electron speaker and or the DI monitor speaker,that would be much closer to the DI's.

Kenny.


grannyring's avatar
grannyring
6,467 posts
 
Agreed apples and oranges.   Bottom line.  
kalali's avatar
kalali
1,977 posts
 

missioncoonery, you may not consider $9,000 speakers high end but many of us out there do. To each his own.

What do you have in your system?


mr_m
1,900 posts
 
Kenny,
I agree that the 800hz crossover point, along with the distance the woofer is away from the other drivers could be a bit of a problem. Maybe the low mounting of the 8" woofer was used to extend the lower frequency of that driver using the floor for some boundary reinforcement. The compromise, I would believe, be in the lower midrange. I couldn't imagine this speaker sounding anything like the DI's.....IMO
Tim
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