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 11 responses by davidpritchard

The speaker - room interaction is one key to obtaining that special listening experience that I sought for many years. The HFT family (HFT, HFT 2.0, and HFT-X) have allowed me to dial in my room to a degree of music satisfaction that I never accomplished using the older technology of absorption and diffraction.

The addition of an Atmosphere Unit and FEQ Unit then further augments the beneficial effects of the HFT's. Visually the HFT's are not obtrusive which is vital in my house. Also in today's world where we are moving more often and renting more often, this system can taken down and then applied successfully to any number of future rooms. 

The Synergistic Research pictures on their web site and the suggested placement pictures included with the HFT's make installation straight forward.

David Pritchard
s1nn3r:

Congratulations on improving your room's acoustics. Thank you for taking the time to display the photos of your room and system. By seeing the room one can really understand the improvements you have obtained.

David Pritchard

 

Oregonpapa:

I am glad the HRT"s are making a significant difference. The HFT- 2.0 placed on the speakers and front wall further improved what the original HFT's did for my system. They are tuned to a different frequency. By using a combination of the original HFT, HFT-2, and the HRT - X one is tuning the room at three frequency points and thereby having a speaker - room interaction that is harmonically richer and more complex that using a single type of HFT.

My room having a lot of glass windows did not benefit from HFT-X, but really improved with the HFT + HFT-2.0 combination. The Synergistic Research installation pictures at their web site are a good starting point of where to place these room tuning devices. One then needs to be ready to deviate from the pictures by listening to the effect in their own room.

After living with the final HFT combination for a while I used a glue gun to more firmly affix the HFTs to the ceiling, walls, and speakers. They can still be removed if needed after being glue gunned.

David Pritchard



I am sure Bach was a special event . In addition to the quality of the power often being better late at night, the decrease in solar disturbance of the electro-magnetic fields helps the sound. Listen to your system improve during the time interval of one half hour before and after sunset.

I bet you can hear as the sun sets the system's sound improves.

David Pritchard  

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



oregonpappa:
I wish it was always easy making sonic improvements in a system but usually it takes a fair bit of time, fiddling, and hopefully products with a good return policy as not all will work. 
I have tried an ECT at the Honda's fuse box -sitting on top of the music system's 10 amp fuse. No improvement. The ECT's I put on the bottom of the radio-CD player in a star pattern as it was too tricky to further open the unit. I put one ECT where the bundle of wires enters and exits the unit.

I talked at the Newport Beach Audio Show with Rick Reus (of very high end car audio installation systems).  He did not get a benefit in sound putting HFT's on the front windshield of one of his cars. But he did get an improvement putting an FEQ unit in the car (they are 12 volt DC powered). The exact placement of the FEQ was not critical for improvement. 

Car fuses use a special blade type fuse so a Black fuses will not fit. Also remember the car system is all DC powered and not AC powered like most home systems.

I do try to approach the subject in a planned stepwise manner. Then if I get positive results, I report them. 

David Pritchard

ronrags:

They work beautifully together. Plus I believe it will help you to optimize the HFT's locations with an FEQ in the system. 

David Pritchard
Yes ECT"s and HFT's will effect the sound when placed on a circuit breaker or on the Black wire (hot wire) exiting the circuit breaker.
Two to perhaps 5 inside a breaker box can have a nice effect.
After deciding where I want my devices placed I switch from blu- tac to a drop of super glue to affix  the devices. They effect is amplified .
Have fun and experiment with location!

David Pritchard
I heard them demonstrated at the Factory open house at Synergistic's listening room. The effect of the HFT wide angle is significant and I will be ordering them soon. They are used in addition to the regular HFT's.  They will be demonstrated at the Newport Audio Show the first weekend in June. I think the Synergistic Research room is worth the effort to go to the show. 

David Pritchard
The wide angle HFT's are being sold by Highend Electronics - look at their items for sale advertised here on Audiogon. I am sure that the other Synergistic Research dealers are able to order them - like Scott Walker Audio, The Cable Company, and David Wiseman.
SR suggests 3 to 6 Wide Angle HFT's be added to a room that has already had HFT's installed. There is a good video on YouTube discussing their placement and a printed diagram.
I believe a 3 pack is $399.00.

I did change my plans so I can go to the Newport Show June 1-3.
If you are able to go feel free to call me during the show.
Cell phone 575-644-1462.

David Pritchard
The Synergistic Research HFT system is fabulous and solved my significant room acoustic problems. Previously I had tried the old school approach of absorbtion and diffraction with much less sonic success and visually the room was then unappealing. I give the SR approach the highest satisfaction rating one can give.

Synergistic Research now has a family of HFT's as Sgordon1 alluded to.
The original HFT, HFT 2.0 (more warmth and texture to sound), HFT-X( more air and space), and two wide angle versions. A combination of these products allows one to really dial in a room sonically.


These small resonators are easily placed and can be repositioned quickly. If you sell your house or change apartments you take your acoustic treatments with you.


For 99.9% of us audiophiles, we will never have a custom built perfect dimentioned dedicated listening room.For real rooms with real acoustic challenges, the Synergistic Research HFT system does a great job of improving  listening pleasure.


Peter Hansen at the Cable Company is an expert on installing the HFT's as is Scott Walker and his staff at Scott Walker Audio. Brownsfan's approach of sending videos of his room for HFT installation advice is a great approach .Another great use of the smart phone. You can watch Peter Hansen placing HFT's in a room by going to YouTube and searching for Synergistic Research videos. The HFT's do come with a good suggested approach diagram on where to place them in a room.


And best of all if you do not like them you send them back and get your money refunded. 30 days  to try them. And if you return them or change their placement - no nail holes in the wall.

A great product that has improved my listening pleasure.

David Pritchard