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
You are speculating that the only way this can be done is with a integrated single driver. I had the LS50's big brother 201/2 for several years.
Speaking of speculation, the coaxial effect isn't even mentioned by the speaker designer. 
213, I have Emerald Physics 2.8s, 12" carbon fiber OB mid and compression driver firing through dust cap, coaxial. mofojo's statement is on point.
Sean, it sounds like those trying to pump up the Tekton brand  may be exaggerating about this coaxial nonsense since even Tekton isn't reaching that far.  

BTW, I've owned several coaxial based speakers from Tannoy, that grand storied brand, and Tekton has a long way to go to at least start having decent looks, never mind performance.
Post removed