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If anyone is looking for an easy covid project that you can have fun with, try these. In the U.S., buy some wiggle molding (used for corrugated roof panels). In my case, I bought two 8' lengths and ripped them in half on a table saw, giving me 4) 8' lengths (about $9 a piece). Then take them and cut them into 2' (you will need 12 pieces)lengths so that the curves line up with each other. Take 2, two foot lengths you just cut and put them back to back and glue/screw them together, until you have 6) two foot pieces.
Take a 1x4 and cut it at about 12.5", make 4). Attach (3) of the curved pieces to the 1x4, two on one side, one one the opposite side in the center (see picture)one 1x4 at the top, one at the bottom.So you should end up having 2) panels. That's it, you are basically done, BUT, I used these panels on the floor at first and they worked, but it wasn't until I put them up in the air about 2' that I went WOW! So you will need to make a stand for them.
In the past I had made and used a more accurate DIY Shakti Hallowgraph model, which I have been using for years,and was curious if wiggle molding would work. Give it a try and let me know.
Ps. I have NOT used what I show in the link, but they should work, any reference you need for visuals or placement, just look up Shakti Hallowgraphs. Also if you want to make the curves offset, just misalign the curves before you glue them together.
Follow Ups:
Could you make these for less than $2690.00?
If so, would it be possible to properly finish the circumference edge to avoid possible serious injury?
Great idea Ric. I've been using the original Shakti Hollagraphs for years and they do really work. In fact been telling customers they can make their own pretty simply by going and getting some rose wooden trellis's like these https://www.amazon.com/Panacea-83737-Brown-Wood-Trellis/dp/B01H03VQRK/ref=sr_1_90?dchild=1&keywords=Rose+Trellis&qid=1612796444&sr=8-90 then building a base for them to sit upright on the floor.
Here's why I think they work and what they are doing.
Think of when you throw a stone in a lake and then see all the ripples that follow. Now if you took a giant fork and placed it upside down in the lake and then threw that stone in the water what happens? Well when those waves hit the fingers of the fork they break-up the waves right? Well that is what the Hollagraphs are doing, they are breaking up the sound waves to smooth things out. At least this is my thought on the subject. Give it a try I think you will surprised on the effect.
Agreed, thank you, I think that the shape has more to do with the sound than the uprights, but I have not tried, pvc or anything else non wavy. You will notice in my picture that I put the curves together when I should have offset them more like the originals.
I have my original DIY pair on lazy susan's right behind the speakers, so that I can pivot them quickly to tape marks on the floor. For the new set I made (shown) at first I had one or two between the speakers, but they were a bit strong. I now use them pointing along the side walls straight ahead for added ambience.
In the near future, I plan to make them half as tall, trying a one foot tall section, and experimenting with upper corner placement, etc.
For those who have commented they hear nothing, I will restate, that you need two things in this hobby, sensitive ears and sensitive equipment. Without the former it must seem more like snake oil. My brother in law couldn't hear anything, and my sister could hear a difference right away!
I guess your mileage may vary...I purchased two pairs of genuine halographs several years ago and after realizing they did nothing at all I sold them at what was unfortunately an extreme loss, we lick our wounds and soldier on
If I knew you didn't like them I would have bought them from you.
What sonic improvements do you detect from using the hallographs? I've never tried them or other things like room lenses. Currently use absorbing panels on the walls only. I do use some other tweaks that I was skeptical about until I actually tried them.
Trying to figure out how to answer, but here goes. When we set up new speakers, we try and configure them a certain distance from the walls and what we hear from our listening position. Two different people might set the toe in angle differently, the speaker position, etc., according to what sounds best to that person.
The hallowgraphs may be an extension of that, in that you are trying to improve, soundstaging, details,naturalness, bass reproduction, etc. by aiming these devices in a particular direction.
In my case, I assumed (wrongly) that toeing them out would open up the soundstage, and that toeing them in would give more detail, which in general is true. Over time I found that it depends on the recording, for instance sometimes orchestral music sounds best with them toed in, and ensemble music might sound best with them toed out. I eventually put the Hallographs on lazy susans, so I could pivot them easily and determine what position sounds best, which for most people is a PITA and many times I just leave them where they are.
If you ever put on a recording and you are wanting the soundfield to open up, or you're wanting more richness in the notes, give these a try.
Sorry for the long explanation.
I've read some reviews that seem to mirror your experience And while it sounds like they can certainly benefit certain setups, you could be going down a rabbit hole if you combine them with position-sensitive speakers.
I don't think so. The idea is to enhance the sound, and I don't know of any speakers they wouldn't work with (I think Jonathan Valin of Absolute Sound still uses 4!).
Previously I used them with my Dunlavy's, and when I switched to open baffle Spatial Audio speakers, I thought I would no longer need them because the open baffle/room interaction would be different. Wrong! As it turns out the Spatials use "controlled directivity" which MINIMIZES room boundaries--that's part of the appeal of the design. Having an open baffle design, you would think would use more of the room nodes, but not in this case.
At any rate, what I present on this forum is a very low cost project that is easy to do. You decide if it works! The hallographs (I misspelled them)are still being sold at $1495. The first pair I made out of oak, the second pair out of cheap wiggle molding. Is there a difference in sound? Even with a different design, they still work. Do they work as well as the originals? Can't say. Good luck!
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