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Carbon fiber is usually used in sheets, and is essentially a cloth. If you are using a carbon fiber panel, then that is the carbon fiber cloth in a matrix of something like polyester, epoxy, or phenolic resin. In this way it has similar properties to the fiberglass/polyester resin in boat hulls, surfboards, and car bodies. You could vary the properties by varying the substance in which it is embedded. I wouldn't blame the carbon fiber itself for whatever sound characteristics you are hearing. Laying the carbon fiber cloth over something like a thin sheet of balsa and pouring another substance over it - polyester, epoxy, varnish, shellac, lacquer - may give some interesting results - who knows?
Very interesting post Nickolay!I had visited the links and I'm impressed what they have accomplished. I think what I find even more validating is their selected panel size that you had posted (60x20x3).Not in terms of surface area size, but the width and length ratio's. Their panel width is 33% of the chosen length.For the panels I've been using, I've calculated them (if I remember correctly) based on the "golden ratio". My panel size is 48"x16". And guess what ratio that equates to be?.... 33%Not trying to toot my horn but just reiterates what has been going on in this forum, how correct we have been (as a whole) with certain parameters of this technology, and building them our own ways to satisfy/challenge our individual imaginations. Question is, how much further can we take it to be more effective and efficient with out breaking the bank!Peace!
Hi Zyggy ! Quite the contrary. In DIY we are able to make IDENTICAL PANELS much cheaper and even much perfect. We must try !!!Tectonic panel size 60"x20"x3", and it work from 80Hz ( By my calculation, summary panel diaphragm surface area is about 0,55-0,6m2 )And now we are experimenting with Rohacell 31 + Carbon Veil laminating
.......tell us a bit more on how you made them and why they are taller than usual?
What are you going to use for your magnet system?
Now........................what's next???????
Just a suggestion, ...................it would be awesome if we only end up needing ONE exciter instead of multiple units. I know that this would mean that the new motor would need to be very high powered and efficient, but it would certainly be ground breaking to say the least!