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Tekton Double Impacts

Anybody out there heard these??

I have dedicated audio room 14.5x20.5x9 ft.  Currently have Marantz Reference CD/Intergrated paired to Magnepan 1.7's with REL T-7 subs.  For the vast majority of music I love this system.  The only nit pick is that it is lacking/limited in covering say below 35 hz or so.  For the first time actually buzzed the panel with an organ sacd. Bummer.  Thought of upgrading subs to rythmicks but then I will need to high pass the 1.7's.  Really don't want to deal with that approach.

Enter the Double Impacts.  Many interesting things here.  Would certainly have a different set of strengths here.  Dynamics, claimed bottom octave coverage in one package, suspect a good match to current electronics.

I've read all the threads here so we do not need to rehash that.  Just wondering if others out there have FIRST HAND experience with these or other Tekton speakers

Thanks.
corelli
aricaudio's avatar
aricaudio
276 posts
 
Also, something to note- is the 6G4B is capable of 5.5 watts RMS in single-ended mode (single tube), as opposed to 3.5 watts for the 2A3. Parallel 6G4B can do closer to 8 watts (the same as a single 300B). 
charles1dad's avatar
charles1dad
10,250 posts
 
Hi Aric, 
I really appreciate your clear and thorough answer.  Some really hard core diehards tend to favor AC heating particularly for the 45 and 2A3 tubes. The 300b seems to be the dividing point  (in terms of power) and above this level (say 211 or 845) then DC is preferable for the reasons you gave. 

I've had some very experienced builders say the same as you in that DC can sound every bit as good as AC. Given your knowledge I was interested in your take on this topic. Thanks again. 
Charles 
charles1dad's avatar
charles1dad
10,250 posts
 
Tom,
It sounds like you're having a ball with your new KT 88 SEP amplifier.  You may not be able to contain yourself once you get the DI SE paired with this amplifier 😊. 
Charles 
sbayne's avatar
sbayne
493 posts
 
Aric - Thanks. Really impressive to get no hum with AC heating on this type of tube.  
Scott
aricaudio's avatar
aricaudio
276 posts
 
@david_ten - Yes, I recall you mentioning getting the front end in place, and all of that worked out first. I hope that's following a good path and things are working out! As far as the options for an SE amplifier, the 845/211 is definitely going to have more power and slam over a 2A3, and arguably more SET tone than the KT88 in my Transcend SE, but also requires a much more robust parts list to get it to work. The chokes and transformers need to be able to handle 1,000 volts continuously for the 845/211, and it also requires double the capacitance, and many series parts in the power supply to handle those voltages (most caps, chokes, transformers, etc. rate a maximum voltage of 500-600 volts). So the build of an 845/211 amplifier is almost double the cost. That said, I believe the KT88 in the Transcend sits right in between a 2A3's midrange and an 845's power- and won't break the bank. The 150's are a quite a bit brighter and larger sounding than the 88's in this amp, but don't quite have the midrange lushness of the 88's. Aric
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