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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
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craigl59
307 posts
 

stfoth:

Exactly.

Call Eric and see if he isn't the kind of professional who can help you make the right choice. Best to get him at the right time as he can be overworked.

FYI, have recently purchased and returned an expensive Class D amplifier. This was bought on the basis of a well-known thread touting its abilities. My experiences were nothing like those described on that thread. Even went so far as to obtain a recommendation for the product on another site. Still, the amp was of modest capabilities and became defective in 5 days.

SO, you can't always trust threads -- even established ones. But I believe you can trust honest owner reviews if you can identify them. It's the innate problem with the Internet Audio industry.

david_ten
5,480 posts
 
@stfoth   I can't see anyone among the current owners who are actively posting 'jumping on you.'  The Impact Monitor thread OP recently returned his. I wished him the best (and so have others)...I hope he finds what works best for him. There is no one speaker for all of us. That's healthy for our hobby.

All the best in figuring out what will work out for you needs. Hope Eric is able to steer you in the right direction and you are happy with whatever choice you make.
213runnin
914 posts
 
Those speakers are just plain ugly, at least Bose had some fashion sense.  And being off on the sensitivity by one or two db's is acceptable.  6 is false advertising.  And the design is also a squarish box with several strong resonance peaks, so says stereophile's measurements.  

You can tell by the immediate personal attacks that my critique can't be debated.  Ugly.  False advertising.  Econo box performance.  At least you can pay extra to put a grill on that ugly mug.
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