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In the Forum: Horn-Loaded Speakers
In the Thread: The African compression electromagnet drivers?
Post Subject: The Italian tweeter.Posted by Romy the Cat on: 1/3/2011
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 audiofilofine wrote: |
Sorry but I prefer not to say the brand of the diaphragms .
I used only moving parts and not the structure, the suspensions were treated with a silicone resin |
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Yes, it is good thing to treat suspensions not the cone. The silicone resin, the old type of table tennis glue and the JBL Aquaplass are fine to do the job but the all easy a bit transients. They find on MF driver but I do not know if I would like to use them on tweeters. Still, what make you to feel that it was the resonances? Was it something auditable that you did not like?
| audiofilofine wrote: |
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I see, the external panel is complimentary to the 4 rods the forms the magnetic back path. You feel that the rods are not enough. Did you model the magnetic systems of you just arrived to it this concussion by listening experiments? I am sure that you know that warring the permeability of your rods you might change the sound….
| audiofilofine wrote: |
| In my opinion,the magnetic circuit of Cogent is not closed properly but I could be wrong because I saw them only in photos The black horns used with phenolic diaphragms and not look up very high but the highest spl. |
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Possible, I cannot judge on it. From the cooling perspective however the Cogent drivers are perfect in my few.
| audiofilofine wrote: |
| Half an hour aftert he meta lreaches a temperature about 46 to 50 degrees (depending on ambient temperature) and the temperature remains constant, even leaving under tension. The metal trumpet acts a sheat sink |
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Yes, I understand that metal trumpet acts a heat sink but do not forget that between the metal trumpet and electromagnet you have a diagram. So, of your heat sink is at 50 degrees then the diagram is at 60 degrees. It might be not the end of the world but you need to do all sonic tastings with the well warmed diagram operating at it’s cruse temperature.
| audiofilofine wrote: |
| Solenoids bear up to 200 volts without problems, but with increasing voltage increases the spl but the responseis less linear with a 3 db boost of around 12,000hz |
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This is what you are approaching to the saturation point.
| audiofilofine wrote: |
Tweeters area workin progress and no thing is final
I have yet tounder stand why changing the valve of power supply sound changes a bit even though the same voltage |
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Sure, I understand. Are you planning to convert it into some kind of commercial product?
One more thing, at your blog you reported that retard Angelo from Brazil as your friend. It is totally up to you how you are willing to compromise your standing but be advised that in my books the people befriended with that that Brazil idiot does not deserve my attention. That guy is ultimate nightmare, so pathetic and so primitive that it does not deserve my criticism. I know that by saying it again publicly I again will receive in no more that I hour a bombardment of emails from that idiot insisting that I need to embrace Christianity, to love Angelo and do not deny him my attention. Well, if Christ out there then I wish him to expire that piece of shit from Brazil. Now, he is your friend, deal with it.
Rgs, Romy teh CatRerurn to Romy the Cat's Site