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In Reply to: RE:More T350 lore posted by Paul Eizik on October 18, 2014 at 14:07:20
hi Paul. The 1823M does have a phase plug.
You can see it when you open it up.
Follow Ups:
Quirck
The EV data sheets for the 1823 and 1824M make no mention of a phase plug or loading plug. Neither do the data sheets for the similar 1824S. A loading plug is promoted in detail as an important feature in the data sheets for the T350/T35 however. One could argue that the volume and geometry of the air chamber in front of the diaphragm in a driver like the 1823/1824 is designed to minimize destructive cancellation in the sound waves, and that this is the same task a loading plug would be put to. However they are quite different things. To be honest I have'nt currently disassembled any of my 1823's or 1824M's to examine this area, but a picture of something resembling a phase/loading plug in one of these drivers would make me a believer.
Paul
Hi, I have sent you two pictures, cannot post them here.
Quirck
Thanks for the correction and the pix! There was probably a patent concern for the reason that this was not mentioned in any of the data sheets. I have never replaced a diaphragm on any of my 1823/1824's but I did open an 1823 up some years ago, and if you don't remove the diaphragm then you won't see the plug. Also there's a metal screen obscuring a view of the plug from the mouth of the driver. BTW the pix came through fine (I've attached one here) but the two text attachments were blank, maybe because I'm running a Mac.
Paul
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