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
OP,

When you are ready, treat yourself to a set of
HFT-Xs and place as suggested.  Listen as your speakers
are transformed!

The variety offered by the different HFT versions is special.
Welcome to the party.
WhenW
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? 
Great detail and focus.
A great compliment to the other versions.

Have you placed any HFTs in your car interior?
^^^ 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?
sgordon1:
My system has benefitted tremendously with the HFT's and the HFT-2.0. However the HFT- X (high frequency resonator) did not add to my sonic enjoyment. And that is the beauty of this HFT "system". There are resonators that respond to three different frequency bands. By careful placement of a mixture, you can really optimize the listening room - speaker- listener interface. It is fabulous that these products come with a thirty day trial to allow you to tune the room and return what is not needed.

I drive a Honda Minivan. High frequency speakers on the front dash in each corner and low frequency drivers in the front doors. After adding HFT-2.0's to my room, I had too many original type HFT's on the walls and removed some.

I now have 9 original HFT's on the front windshield. I also have three mounted on the ceiling about two feet behind the front seats. The Tone controls are set to Left 3, Front 3, Trebble 4, Bass minus 1. I am the only one in the car 95% of the time. With the HFT and tone adjustment, I now have a fabulous soundstage with good instrument positioning, and nice decay of notes. I now often listen to solo piano and chamber music while driving to work! This music would have not have conveyed any emotion in my untreated car.

The HFT's were glued into place with windshield glass glue bought at Home Depot after final position was obtained. The HFT will fall off the windshield on a hot day when Blue Tack is used to afix the HFT to the car glass.

To reduce electronic glare- noise etc., I added seven ECT (Electronic Circuit Transducers) to the CD player. As a bonus I now know how to remove a CD + radio from a Honda!

To complete the sound system transformation , I installed an Acoustic Revive 777 unit to the ceiling about three feet benind the front seats. This gives better focus and less fatigue.

This was a very fun and rewarding project.
David Pritchard