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In Reply to: RE: Room Tuning Mpingo Bells posted by Jim Hickey on February 16, 2016 at 06:13:41
These look like a rip off of Synergistic Research, which is a rip off of the Asian (forget his name) inspired room "treatments", and so on.
Out of curiosity, I made some of my own Acoustic Art style pieces after getting some brass bowls (make sure they ring, thrift store finds) and making some wood pieces to hold them.
To my ears, they DO work. I think how well depends on your ears and system, room size etc. I already have some homemade Shakti Hallowgraphs that I would not do without, so I am familiar with augmenting the stereo spread/spaciousness/room affects. As far as sound, I am hearing a deeper, richer, fuller room acoustic--what does that mean? Perhaps more headphone like, in that you feel a bit more surrounded with sound, if that makes any sense. My guess is that these work because they ring, and if your speakers are able to excite or stimulate the frequency of the bowls, it affects the room and your ears.
I would suggest finding some inexpensive brass bowls that ring when tapped and putting them at different points in your room. Maybe even buy some Tibetan type bowls locally, and take them back if you don't hear any difference. Good luck!
Follow Ups:
I think you might be referring to the ASI "Sugar Cubes" and the Synergistic HFT's. I've got a combination of both on the front wall of my HT/casual listening set up.( 18 total on the front wall and 6 additional placed near the listening position) They add sound stage depth and atmosphere to the overall presentation. A nice effect for sure. Later I added a two of the large Clubwood resonating bells behind each speaker. I'm not sure anything changed after adding the bells. Now could I take down all the other treatments and just leave the bells to see if they alone could produce this effect? I doubt it. It seems one has to put a lot of these tiny devices in a room to have an effect and the "large" bell isn't really large. All I can say in the end is YMMV in regard to the "bell". In a different room/system, their effect might be more pronounced. Your DIY Skakti Hallowgraphs sound interesting BTW. How did you fabricate those those?
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A few years back, someone posted here on how to make the Hallographs. A jigsaw, some plywood and sandpaper and about 30 hours of work later, voila! I suspect any type of material would work--exotic woods seem like bs, gives them a reason to inflate the price. The great thing about them is you can expand or focus the soundfield ie for orchestra vs. chamber, jazz vs. rock etc. Maybe do a search to try to find the post.
Thanks Ric. I'll check it out, but at least I now know a jigsaw is involved.
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