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In the Forum: Horn-Loaded Speakers
In the Thread: Vitavox’s S2 Survival Guide.
Post Subject: Dumping that diaphragm…Posted by Romy the Cat on: 3/27/2006

 cv wrote:
Regarding what effects the larger horn will have: my gut feeling is that the larger air mass will provide more damping anyway. It may be that there's an optimal bug screen "density" that varies with the air loading?

This is very good direction to think I have thought about it a 3-4 years back. You are proposing that is the throat reactance of the S2 horn would be higher (more air-mass in the horn bell) then the S2’s cone would be more dumped and will be less “poisoned”. The problem that I have experience when I tried to implement it was: how to increase the throat reactance and at the same time to pressure a shorter horn.

I have tried to increase the acoustic impedance of the bug screen by laying there the semi-transparent acoustical material. It defiantly “helped’ in some areas but at the same time it did create some damage in other areas. I think to do it properly it should be manufactured a new bug screen with twice more smaller size of each sell and perhaps twice thicker, as the bug screen also acts and a very effective defuser. I did not do it but if I come across the “ready to go screen” I would defiantly try. Another area of expiration for you if you wish is the back chamber of the S2. It is a clean metal with a lot of reflection at HF. By layering it within it’s perimeter with the 3M’s made Brillo sponge (or similar) yo0u might silently change the Sound.

Rgs,
The Cat

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