[HAM] V21 Drivers

[David Anderson]

Keith,

I'm not sure if we disagree or if it's an issue of semantics.

The V21 faceplate may have a phase plug built into it, but the  
primary purpose of the faceplate is to hold the diaphragm in place.

In other words, you could have a faceplate without a phase plug, as  
many dome tweeters do, but with no faceplate, what keeps the  
diaphragm where it's supposed to be?

Maybe my question for Jordan is: are you looking for the whole  
plastic assembly that screws to the metal magnet structure, or are  
you looking for the little cork-shaped thing that is stuck into the  
larger plastic assembly?

In the first case, you'd probably have to buy a non-working V21 for  
parts; in the second case, you should probably be able to fashion one  
using an existing one as a guide.

David

On Jun 9, 2008, at 5:46 AM, Keith H Clark wrote:

> Dave,
>     That black plastic piece on the Jensen V21 that covers the  
> diaphragm IS
> the phase plug. It acoustically aligns all the frequencies  
> emanating from
> the diaphragm into a coherent wavefront to exit the driver.
> In an Altec driver, the phase plug in the later ones is that orange  
> piece
> with the radial slots in it. In the earlier ones, they were  
> circumferential
> slots machined into the metal. In both cases, the sound passes  
> through those
> phase plugs,as in the Jensen driver where it exits 'the slots'  
> after being
> compressed and aligned to enter the horn throat.
> m.com/
> Beta Forum Port: http://www.hammondforum.com/forum/
>