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

Showing 16 responses by charles1dad

According to the many posters on this site who’ve actually  listened to the Double Impacts they are unanimous in confirming their superb sound quality. It seems although this speaker has an uncommon driver array ( relatively speaking) the designer knew precisely what he wanted to achieve. Based on owner feedback he certainly has in resounding fashion .
Charles
How is Kenny wasting anyone’s time? He owns the Double Impacts and is very familiar with their sound quality. What is more reliable than this experience? It is rather strange that people who have no direct experience with a product can form such strong opinions based purely on speculation and preconceived beliefs.

In reality there are quite a few audiogon members who’ve posted exceptionally positive comments regarding these speakers. I place far more value on the perspectives and comments from those who have actual listening experience than those who play the role of armchair quarterback. Relying on "math" is no substitute for direct listening to an audio product.
Charles
Onhwy61 ,
I whole-heartedly agree with your comment in regard to asking questions about a product.  However it is without question a different matter to present uninformed conclusions rooted in pure speculation. In my opinion the latter scenario has occurred on this thread. 
Charles 
Onhwy61,
Read the judgemental comments (from his expert friend) that followed the "question" for example, "comb filtering monster" and "the MTM spacing is ridiculous"
Far from a simple and innocent question. Rather strong and negative assessment from someone with no direct interaction with the Double Impact. This is obviously more than an inquisitive question don’t you think? The entire post should be taken into consideration. 
Charles
Just have to introduce politics and Trump to make a point? And CNN is just ideally neutral I suppose ? Come on mission coonery  you can do better.😊
Charles

Mapman,
In general terms I agree with much of what you have written. I have had the opportunity to hear many expensive (25 K and upwards) speakers. Some were quite impressive and clearly some were better than others

I do however firmly believe that one can very successfully build an excellent sounding audio system utilizing speakers that are quite reasonably priced. As you note this will require some experience, time and good quality ancillary electronics but is definitely achievable. Matching and synergy is the vital key.
Charles
Hi schw06, 
Your kind comments are appreciated.  I'd add kdude66 (kenny) to your list. He's a very competent modifier of audio equipment and has much experience with a wide assortment of top notch amplifiers and speakers.  He knows his stuff 😊
Charles 
Grannyring and schw06,
I agree with your comments/ take on this as well. If I were really interested in a speaker I’d welcome the opportunity to hear it in my system. What better way to assess them could there possibly be? What is a superior scenario to a home audition?

Yes you will incur some expense with shipping if you decide to return them, this is acceptable to me given other alternatives. Listening at a ďealer showroom is helpful but this isn’t "your" system. Is the expectation there should be zero out of pocket cost and the manufacturer just absorbs everything? That makes little sense to me.

Many speaker manufacturers don’t publish crossover point figures. If it’s that important for you to know call or email the builder. Even if this information is readily available you would still not know what the speaker sounds like. Home audition when possible is the best method for judging an audio product. Tekton willingly offers this vital option.
Charles
There is as  I understand a Double Impact "SE" version that uses all Scanspeak drivers in place of the standard drivers. This model is 6000.00 dollars so presumably the Scanspeak drivers are much more expensive. 
Charles 
I agree with the common sense approach of Swampwalker and Sebrof in regard to buyer paying for the return shipping cost of products auditioned in one’s home. I do believe that this would have the benefit of narrowing the field to those seriously considering purchase vs those who just want to hear them with no intention of buying. As was written earlier by bullitt5094 , the buyer should have some "skin in the game".
Charles
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
Hi Mikirob,
You judge audio products by how they sound? Well so do I, Yes I understand that this is a strange and unconventional approach 😊
There’s an odd aspect of the High End audio community in that products can be looked down upon and dismissed "because "of their lower price.

There’s an ongoing thread that basically takes aim at Tekton Double Impacts and their owners. Essentially the premise is the speaker is "midlevel " quality and undeserving of the high attention level it has garnered. The OP of that thread hasn’t heard the Double Impact but deems it is not true High End caliber.

How one can glean so much information based on preformed assumptions is a mystery. There is a snooty snob attitude at work and this isn’t uncommon in the audiophile sector. Brand status and very high cost are required for approval or Acceptance.

Perhaps that OP and others of that mindset would find the Double Impacts unsuitable by their lofty standards, okay that’s fine. I'm a free market advocate and believe people can spend what ever they want, that’s their call.   My only point is to base an opinion on actual listening. I’ve heard very expensive speakers and some of them are truly superb sounding, yet still could be considered overpriced. This is subjective I freely acknowledge.

I do believe that higher price is actually viewed as a definite plus factor for a certain segment of audiophiles. That’s okay as there are always going to be distinct niches formed and individuals will decide where they fit in. My criteria is listen first and then offer a honest impression. Maybe Tekton's pricing model intimidates some, who knows. 
Charles
I don't recall any attacks directed toward Devore speakers  on this thread. 
Charles 
The statement questioning the the cost difference of internal parts between Devore and the Double Impact hardly seems like an    "attack".  Just a reasonable observation.  I suppose it is a matter of interpretation and level of one's sensitivity. 
Charles