[HAM] V21 Drivers

[Keith H Clark]

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.

-----Original Message-----
From: hammond-bounces at zeni.net [mailto:hammond-bounces at zeni.net] On Behalf
Of David Anderson
Sent: Sunday, June 08, 2008 8:29 PM
To: The Hammond Forum
Subject: Re: [HAM] V21 Drivers


The phase plugs I've seen in V21s are either wood or cork, not black  
plastic.

The only black plastic part I know of on the V21 driver is the  
"faceplate," the part that holds the diaphragm in place. This is the  
term used for both horn drivers and dome tweeters. The ones I've seen  
have "GE" on them. Were they made by General Electric??

The parts of a compression driver are: the magnet structure, the  
diaphragm, and the faceplate--and maybe the phase plug :-)

David

On Jun 8, 2008, at 5:32 AM, Keith H Clark wrote:

> How about phasing plug?
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