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In the Forum: Horn-Loaded Speakers
In the Thread: RAAL “Water Drop” tweeter for Macondo.
Post Subject: "Water water everywhere and not a drop to drink"Posted by oxric on: 2/24/2011
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Romy:

Again thanks for the response. With regard to the most important question, my choice would be to use the standard AM Amorphous C-Core transformers in the short term but the Direct Tube Drive in the long term. As I mentioned elsewhere, I was in the process of looking for a place in Alsace in France, close to the border with Germany and Switzerland because of work, which I have now done. By some completely remarkable and undeserved stroke of good fortune, this townhouse happens to have a fairly large room that can eventually accomodate the sheer size of a full multi-channel 'Macondoesque' set-up. I would like to build Melquiades Full range in the near future but with the option of making it into a fully fledged Super DSET Melquiades. Anyway, that's the objective.


 romy wrote:

So, is Water Drop shape necessary? I do not know. I know that baffles are bad for HF devises and I would like my tweeter to stand alone with no baffles. If I buy this Lazy Ribbon then I would ask Alex to have the front plate no wider than  the body or the ribbon and to make the mounting provision under the bottom. Alex is very resourceful man and very much willing to use his inventiveness to benefit custom solutions.
 



Indeed, there is of course the practical difficulty that the front plate looks like a structural part of the frame supporting the ribbon. However, the reason for the less than ideal measured performance (although of no import) of the driver above 20KHZ, according to Alex has to do with the distance of the magnet from ribbon causing a certain amount of reflection. However the question is worth asking and I will ask Alex what he thinks of the possibility of reducing the front plate size to as small as possible.  

 romy wrote:

I feel that in out systems his tweeter need to be treated like a piece of furniture – you need to like how it looks and fells  in context of your own setup and your own speaker frame. I think Alex has no a lot of customers who use his drivers in standalone configuration – so you need to navigate his and to get from him what you want
 



There is another solution howver, which on paper and aesthetically is extremely appealing to me. I would love for the horns of my Macondo system to be not black but with a more elegant finish in keeping with the local magnificent landscape of a typical Alsactian town surrounded by vineyards, nestling in the foothills of mountains on which are perched the ruins of old castles, with the 'route des vins' and 'route des vins' unfolding just outside my front door. I doubt I will pull that off but if I do, the aesthetics of the Lazy Ribbon will stand out like a sore thumb. So I am thinking to myself why not have a Water Drop enclosure made out of wood or plywood that will be finished like the rest of the horns system.

With regard to the frame, there are actually only two solutions which can be conceivably of interest. One can use the 'H' style frame, with the significant annoyance that I had rather the frame was out of view altogether (I have long ago given up on the idea of making an 'H' frame pleasing to the eye. This leaves the monopole solution, which is or course what you are using. I was hoping my system would manage to look very different to yours, Romy, but the cumulative effect of the optimal solutions for the different channels just seem to always conspire to put me in a corner where I find it difficult to differentiate this system. In fact, the more I reflect on it , the more I see that I will end up with exactly the same combinations as yourself down to paint colour.

So watch this space. I will post more here once I have decided on the options for the Lazy Ribbon. Or if I have any 'Eureka!' moment.

Regards
Rakesh

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