Synergistic Research HFT's


I acquired a ten-pack of SR's HFT room treatments and installed them according to directions just prior to last night's listening session. Easy to install using the blue-tack type of material that was included in the package. 

http://highend-electronics.com/products/sr-hft-high-frequency-transformer

The listening room already sported two pairs of Shataki  Holograms ... one pair in the front corners of the room and a second pair in the rear corners of the room. In addition to the Holograms, there are tube traps along the rear of the listening position. I thought I had my room problems solved with the existing treatments and I was satisfied with those results.

Enter the SR HFT's ...

I had my friend Robert over last night to help evaluate the changes, if any. I was looking forward to maybe a small improvement at best. I mean, what can one expect from little metal devises that stick to your walls ... little devises so small that one wouldn't even notice them unless they were called attention to?

Long story short ... we were hit over the head with astounding disbelief at the ... I don't want to use the word "improvement," because that would be an understatement. I'll use the word trans-formative instead.  Because, that's exactly what this tweak has done; its transformed my listening environment, and consequently my entire system, into an unbelievable music machine. 

The first CD I played was a private recording of Rachmaninoff's third piano concerto, with the L.A. Philharmonic orchestra during a Rachmaninoff piano competition. The disc features the winner of the contest on piano.  This has always been one of the favorite recordings in my collection. It transports the listener into the venue in a very natural way. This CD was burned right from the master tape with no artificial reverb or compression.   A good test for any changes to the system. 

Uhhh .... what I thought was a great recording transported us into the live event. Astounding to say the least.  How can such a simple tweak as ten little dots spread around the room have such a huge effect?  My theory is ... the sound energy coming from the speakers causes certain resonances at certain frequencies, and those resonances  excite certain areas of the room and smears the sound. The HFT's take those resonances out of the equation. That's my  theory, anyway. 

Here's the noted improvements:

1. A much more solid presentation at higher volume levels. Everything just seems to hang together better. 

2. Bass control: The best bass from my system yet. Very defined. The lower registers of the piano are a delight. 

3. Size of the presentation:  What I thought was a big sound stage before has been expanded in a very focused way.

4. Transparency: I can "see" much further into the presentation now. The audience noises,coughs & sneezes, the orchestra tuning up, the members turning the pages of the music, the conductor walking on the platform ... all there where a lot of it wasn't before. 

5.  Musicality: The correct tones of the instruments, which I've paid particular attention to in the system, were much improved. Strings, timpani's and the presence of the piano were all dead-nutz on. Amazing. 

6. 3-D:  A much more holographic presentation.  Good Lord, how much better can this get? So much more "air" around the performers. It really adds to the suspension of disbelief in a big way.

I could go on and on with our positive impressions last night, but I will echo what Robert said:  "This is your greatest tweak ever!"  "It sounds like you've improved your entire system." 

After playing a number of CD's featuring piano, we switched to the analog rig and played a whole variety of music ... from straight ahead jazz to Hawaiian music.  The expansion of the sound space, and the realism from analog and tubes with the new room treatment? Unbelievable. 

The ten pack of HFT's gets you to "level two" ... one more pack of five would get it to "level three."  Based upon last  nights results, there is another five pack in my near future. 

Are any of you other A'goners using SR HFT's in your room?  If so, please post your results here. I'd like to know if your experiences with these devises are similar to mine. 

Happy listening, guys. 
128x128oregonpapa
nyame ...

Nope, no atmosphere or FEQ in the system. Just the SR HFT's and the room treatments I alluded to earlier.  For what they are, just ten little devises that you stick around the room, they are NOT subtle at all. A major advancement forward in my system for sure. Like my friend Robert said ... the best tweak I've tried yet. The improvement in the bass response is amazing ... and of course, everything else up the line is improved along with it. 
Hey OP, how did you deal with the racks of albums, windows, doors, and rack when placing your buttons? Did you feel you compromised the placement because of those or would you say location is not super critical +- some inches?
I have the Atmosphere mini hooked up and the unit has been on for 24 hrs and I have to report that the results are pretty impressive to say the least and I haven't even installed the HFT's yet!!  

I have my system setup as a semi nearfield listening configuration with extensive ASC tube traps and room resonance control and it has quite pronounced imaging, soundstaging and bass agility without the mini but with the mini it is a much more engulfing experience. The most vivid attribute is the liquidity which still has me shaking my head as I have taken great care in my AC supply with that being high current balanced power, Oyaide outlets along with judicious grounding of components.

In my 35 years of being an audiophile, this is possibly the most profound upgrade I've implemented although I think a system/room that has been assembled with thought and research certainly will be beneficial to the Atmosphere's attributes, there is no doubt that any system will benefit from implementing one of the Atmosphere units to the point of being a major upgrade. 

Off to listen to more music...
bugredmachine ...

Yes, I did have to compromise a bit. 

First, let me say that I have no wife to deal with, so nothing in the sound system has to pass "the wife test."  *lol*

There is a window covered with vertical blinds about 8 feet behind the speakers, right where one of the HFT's is supposed to go. (you can see the blinds if you go to my system page). So, I keep the blinds shut and have one HFT stuck to one of the blinds. Its the same with the HFT on the left center ... its stuck to the closed blinds. All of the other HFT's were placed according to the directions. Actually, they are all in the proper locations, I just have to keep the vertical blinds shut. I always shut the blinds for listening sessions anyway, because I've found that the reflections off of the large windows negatively affect the sound. 

It is a trial and error thing though. Yesterday morning, I warmed up the system and it didn't sound quite as good as before. I checked around and found that the HFT on the ceiling had come loose  over night and fell on the floor. I got some Blue Tack and put it back into place and walla ... all was good again. Imagine that ... one little HFT made that much difference. Not really drastic, but I could tell the difference. 
So as a first time user & considering your experiences would you suggest beginning with 5 or 10 of the original HFT?