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In the Forum: Horn-Loaded Speakers
In the Thread: Experience Music Horn Installation @ VSAC
Post Subject: The sulphur hexafluoride idea and the Jeffrey’s PillowsPosted by Romy the Cat on: 8/8/2009
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 cv wrote:
Did I ever mention my sulphur hexafluoride idea to you? You fill a horn with this gas, sealing the front with some loose fitting heavy grade mylar or whatever. The horn can then be 44% of the size you'd otherwise need.

Hm, you would be very surprise how close you hit. I is not about the gas-filled horn: I personally would like to have a riverside scenario – an ling as slow horn to let the sucker to build up the “umf” and slowly release the pressure. Where you were very close is in the idea of “solid horn”. The “solid horn” or a “hard horn” (both of them are bad transition from Russian) is concept invited by one guy in Russia. I met him at one of their audio forums and he very strongly advocated his invention. His horns have high exertion drivers at throat and a light suspended Mylar-like diaphragms hermetically covering mouth. The ratio: mouth to throat work across the confine air as gain magnifiers. I remember I argued with him proving to him many weak point of this idea. He did not badge and believed that it was a “way to go”. I need to mention that he is in low0key pro-audio world and build his speakers for young rock–roll bands. Anyhow, also I very much do not endorse the idea of the “hard horn” but it was done and tested.
 cv wrote:
I was going to email Jeffrey and ask about them - kind of like the scene at the movies in Annie Hall where the director is in the queue at the movie... But I'm pretty sure they all needed a place to crash after the beers were cracked open...

The fan part is that disagree with Jeffrey in his use of those Pillows. I did not talk to him but I have the site visitor who did spoke with Jeffrey about it sent me email about it. So, I feel that Jeffrey used the Pillows wrongly. However, my question was not ONLY about the Jeffrey’s motivations (OK, I thought that he would be kinkier :-) but rather what the pillows like this would do in a horn like this. I think it is a very good horn-thinking exercise. Do not use the HornResp to model it… :-)

The caT

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