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

Showing 23 responses by oregonpapa

^^^ Nope, but that's definitely on the agenda.  That the PHT's, pronounced "POT."   They come in a two-pack. I'm going to try one on the cartridge and one on the turntable's junction box where the RCA connectors are. 

In the meantime ... the HFT room treatments are fantastic!
^^^

Alan ...

I've done a demo for friends many times with the Shatki Holograms by taking them out of the room, then putting them back into the system.  The improvement is dramatic every time ... with the Shatki Holograms in the system. So dramatic, as a matter of fact, that I cannot imagine anyone improving the sound by taking them out of the system. 

How will "better speakers" solve room problems? 

OP
s1nn3r ...

I second what David just said. You have a beautiful system and room. Love your floors too. :-)

I've gotten the same results as you, in that, the room just seems to get larger with each SR tweak I install.  Larger, but way more focused. The SR HFT's really opened things up for me. 

SR's demo at the  Newport show really showed what all of their products can do when combined together. Like I said, it was like a huge 3-D I-max theater picture of sound with the products in the system, and then it all collapsed and went away when the products were either disconnected and/or removed entirely from the room.

I can just imagine what the effects would be in a large home theater environment set up properly with a huge screen and projection TV with state of the art electronics and an ultra high-end speaker system.  

My business takes me into many very expensive homes that have custom theater rooms. These people need to know about the SR products for sure. 

How anyone cannot hear the improvements made by these products is beyond me. Maybe it has to do with the resolving ability of the system in the first place. I mean, one can put lipstick on a pig ... but its still a pig, right? And then there's that old sow's ear and silk purse thing. :-)

OP
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. 
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. 
^^^ 

Infection ...

Considering the results I'm getting with the 10-pack, If I had to do it over again, I'd go with 15 of these suckers right off the bat. That would take the HFT's to level 3. 

Tonight's listening session lasted until 1:45 in the morning.  Even my room mate, who is no audiophile by any  means, came out and listened for a couple of hours. We ended up with some of Bach's orchestral music ... with the final cut being Bach's Air on a G string.  Let me tell you ... I've listened to that recording at least a hundred times, and never have the strings been so defined, lovely and tonally correct. They just washed over us like pure ocean water. Heaven! 

So, yeah ... I have the 10 pack placed right where they need to be ... but if five more would enhance what we experienced tonight, bring 'em on.  :-)

OP
^^^ Thanks for the suggestions, David. I'll check into the 2.0's.  

I wish you could have heard that Air on a G String last night. the power must have been extra pure at that early hour (1am) ... it was glorious. 
Thanks, sgordon1 ...

Each step I've taken with the SR tweaks has revealed so much more from my recordings. Quite unbelievable, actually. 

What was your experiences with the HFT-X's? 
^^^ No, not yet in the car. 

I drive a low mileage Lexus LS 430 with the Mark Levinson sound system. It sounds really good and its a pleasure to listen to on trips.  I like to burn record albums to cassette tape for use in the car. All analog, ya know. :-)

I was wondering what the car  would do with an SR Black fuse for the radio ... but I hadn't considered the HFT's.  Have you tried them in your car?
David ...

I have to say, you are one fully dedicated audiophile for sure. Geeze, now I'm looking forward to upgrading the car with the SR products. Have you tried any ECT's on the battery terminals? How about putting an ECT on, or inside the fuse box. Or ... even upgrading the stock fuse that runs your car's audio system with an SR Black fuse? I mean ... ya never know, right? :-)
Ron ...

That's very interesting. I couldn't be happier with my HFTs in the room.  Its not subtle at all. It was a major improvement. Unlike you, I left all of the previous room treatments in the room when I added the HFTs' 

OP
^^^  Hi, sabai ...

Could you be more specific?  How about posting a picture of your DIY project? 
Hmm ... copper beading cones inserted in copper caps?  Thanks for clearing that up. :-)
toolbox ...

If they work for you, please post info on the parts supplier and specifically what you bought. Thanks ...

Frank 
^^^ When I first installed the ten-pack of HFT in my room, I had my friend Robert over for a listen. I didn't tell him what I had done and asked him what he thought. Robert hears like a bat, and upon initial listening, he about fell over. The improvement was significant to the point that Robert was guessing all sorts of things from tube rolling to an upgraded preamp. Everything was improved, including, as you said ... the bass.

Frank
madavid0 >>> 

Now that you are fully aware that there is a 30 day return policy, when will you be placing your order? 

Frank
David ...

I tried to find the "wide angles" on the Highend Electronics site and they weren't there yet. Do you have the info on price? 

Also, have you tried treating your HFT's with Tim's TC?  I pasted mine and got another lowering of the noise floor. Don't ask me how it works, cuz I haven't a clue.  :-)

Also, I'm very disappointed in the cancellation of the audio show. Was looking forward to seeing you again and maybe break some bread together. Hopefully, next year ...

Frank
madavid0 ...

Now that you've tried the HFT's on the 30 day trial, what are your conclusions?? 

Frank
^^^ I see that SR has come out with a new "BLUE" wall outlet. I wonder  how it compares to the Black outlet?

Frank
jkuc ...

I’m curious. Exactly what was your intent in making your above post?

Is this type of review more to your liking:

SR Red fuse = Good.

SR Black fuse = Better.

SR Blue fuse = Best.

SR HFT’s = Really good.

SR Level III Power cords = Better than the ones they replaced.

ARC REF-75se = Better than the REF-75 it replaced.

Herbie's tube dampeners = Better than nothing.

Please enlighten us ... what were your results when you placed the SR fuses and the SR HFT’s into your system and room?

Oh, wait ...

Frank