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It only took a matter of minutes if not seconds to realize that I had a poor man's Podium producing sound that I never thought was possible in a home environment.I wonder!!!Has anyone here had a look at Podiums' patent claims?I for one, have not seen their patent, but there must be some mention of NXT technology. I don't think they can lay claim to multiple exciters, only the type and the way they're mounted. This along with the type of panel material and they way in which it's mounted. I'm sure there are other claims as to their uniqueness as a loudspeaker system. I won't speculate beyond what I've just mentioned.My point, (yes I have one) is that anyone of us may come up with a "similar" system that may indeed have qualities worthy of enterprising commerce.Personally, I just love the idea of making something that contains a part of my own creativity. It's sort of cool to make something that works amazingly well and knowing that the guy down the street can't walk into a store and buy one just like it.This is the sort of thing that sets the DIY'er and entrepreneurs apart from the rest of us, we are a unique breed !Despite having a technical background, I'm a "hands on" kind of guy.No one here would be shocked to know that scientists and engineers the world around have made their breakthrough discoveries by empirical means.After their discoveries are made they create formulas to fit their technology.Please don't flame me!"Most" of the time, technologies are a germination of an idea in which known science is applied until the desired results are obtained. "BUT"!!!! If we get into a situation where established science is not yielding expected results, we must question our testing methods and possibly find new testing procedures.Quite often, well heeled speaker companies have there own anechoic chambers. Not too useful below 200 hertz, so they resort to quasi-anechoic methods to try and "gate out" lower frequencies. Many times they'll make a composite curve of anechoic and quasi-anechoic results. Still not a room friendly way to test a loudspeaker.We're pretty lucky to have NXT technology to make our own loudspeakers.They're fairly room friendly, so there's little need to go outdoors and make measurements.I know, I'm beginning to sound like a cheerleader for NXT. I don't have the legs for it, believe me! I've been designing and building ESL's for over 25 years, they're great sounding speakers. The downside is getting adequate sound level and acceptable bass.Also, they're more trouble to build. Expensive step up transformers and bias supplies, high failure rate and many amplifiers balk at driving a capacitive load.Oh, I forgot...............No magic!Jack
Quote from: zygadr on 19 Nov 2009, 03:40 amIt only took a matter of minutes if not seconds to realize that I had a poor man's Podium producing sound that I never thought was possible in a home environment.Quite often, well heeled speaker companies have there own anechoic chambers. Not too useful below 200 hertz, so they resort to quasi-anechoic methods to try and "gate out" lower frequencies. Many times they'll make a composite curve of anechoic and quasi-anechoic results. Still not a room friendly way to test a loudspeaker.Boy, pretty bad when I have to quote myself.I meant to say that the "reflections" of the lower frequencies were gated out.Jack
It only took a matter of minutes if not seconds to realize that I had a poor man's Podium producing sound that I never thought was possible in a home environment.Quite often, well heeled speaker companies have there own anechoic chambers. Not too useful below 200 hertz, so they resort to quasi-anechoic methods to try and "gate out" lower frequencies. Many times they'll make a composite curve of anechoic and quasi-anechoic results. Still not a room friendly way to test a loudspeaker.Boy, pretty bad when I have to quote myself.I meant to say that the "reflections" of the lower frequencies were gated out.Jack
Zygadr and fivestring.You know that panel material I have been testing ,the one that is very rigid ,the one that got very hot but only melted the foam inside .You will never guess what it is made of .
I was hunting around many moons ago and found a supplier for 6mm single ply(which I think would be better?) but never got to buy or try it.I'm not certain if it may or may not require stiffening at 6mm?.........double ply at 6mm definitely wont, but may not transfer the sound from front to back as well..............don't know unless we begin testing
