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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
charles1dad's avatar
charles1dad
10,250 posts
 
Hifiman5,
This speakers are sold direct which will reduce the retail price.
They could simply be "under priced" for the performance rendered. I had an opportunity to hear the Double Impacts driven by my 300b SET amplifier earlier this week. This is a very good sounding speaker.

I would remind you that the negative comments directed toward this speaker are from people who haven’t listened to them, or consider them unworthy due to their cost. In my opinion you don’t have a valid opinion of an audio product if you haven’t heard it.

I’m well aware that this doesn’t inhibit unsubstantiated speculation, conclusions  and opinion.
Charles
hifiman5's avatar
hifiman5
1,832 posts
 
Thanks @charles1dad !  Like I said I am not in any way bashing them.  As you so correctly pointed out, I haven't heard them!!

I'm just trying to figure out how Tekton does it at such low price points.

I gather people just buy these speakers based on testimonials and professional reviews (which are few from what I could find).

The business model of the company is hard to come to grips with.

Thanks for helping me understand this audiophile outlier.
kdude66
1,200 posts
 
hifiman5,

Check your inbox I sent you a pm.

Kenny.
david_ten
5,480 posts
 
@hifiman5    In addition, as it is with more basic case work, Tekton isn’t blowing costs on cabinets, though one can upgrade at additional cost and build time. Since it is a small operation, overhead is contained.
seanheis1 OP
623 posts
 
1. Internet Direct

2. Basic Cabinets

3. Lower cost drivers

4. Word of mouth advertisement 

5. Profitable upgrade options 

6. Clever engineering 
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