Pop Up Tweeter
2nd August 2016
Objective of this write up is not to provide a singular straight-forward best answer.
First it shows the use of known good rules/solution/setup (proven from textbooks), but to more importantly demonstrate which/when/how to use what investigative method to achieve a proper good setup. (It's more of a diary for myself)
Finally without the break and fail due to disobeying the fundamental laws of physics (in this case mostly acoustics) and not forgetting standard rules of practice in basic attention to electronics, etc.
Consider this a super quick demonstration, can't even label this a short cut nor qualify as a crash course, because if you know you know. Else a lot of text book foundations required to explain the things done and unfortunately is out of this scope.
26th January 2016
I did not managed to designed my ultimate tweeter, still throwing in all the things learnt, too greedy falling into the trap of always tomorrow will be better. Hence another solution is to simply BUY from the internet. Some models inquired, now starting the gambling purchase. Upon receive it is subjected to anechoic chamber and measured seriously. It is going to replace the existing tweeter, this purchase/selection got to be better, else effort wasted.
Ta Da
It sounds so much better than the in-built sandwiched tweeter. This is going to be permanent in next page. Full detailed measurement report in this link Click to download.
May 2016 a video of it's 3D vibroscanning using www.klippel.de @ 4kHz. Only single video is provided, because the full scan to 20kHz shows good performance, no problem whatsoever.
No wonder it's sound is good, even though the non-linearity was not done properly, because the diaphragm was done really nicely. Recommend to buy? errr no. Let's get something even better. X-File, it's out there, we just have to look for it, or make one myself.
Now that it is too high up, I've temporarily angle it downwards pointing to my ear.
A lot more will be coming, stay tuned.
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