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Old 23rd October 2012, 04:51 PM   #1211
jzagaja is offline jzagaja  Poland
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Got sachet of Aquaplas.
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Old 23rd October 2012, 05:04 PM   #1212
phusis is offline phusis  Denmark
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Originally Posted by jzagaja View Post
Got sachet of Aquaplas.
How is that evenly applied on the surface of a diaphragm?
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Old 23rd October 2012, 05:06 PM   #1213
jzagaja is offline jzagaja  Poland
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Will try brush first and show results with D800Ti.
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Old 23rd October 2012, 05:16 PM   #1214
AndrewT is offline AndrewT  Scotland
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I didn't measure 13 degrees. I worked for B&C and 6 degrees was on the drawings.
Is 6degrees the half angle?
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Old 23rd October 2012, 05:22 PM   #1215
tinitus is offline tinitus  Europe
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Is 6degrees the half angle?
and with the phase plug ?
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Old 23rd October 2012, 05:50 PM   #1216
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Gentlemen,

One may produce a "plug gauge" with polar graph paper and stick it into the throat to check fit. I have done this. I believe the included throat angle of the DE250 is very close to 14 degrees.
From this I made a wooden taper. I attached fine sandpaper to the taper to remove the mold marks from within the throat. The same served very well in smoothing the transition from driver to horn.
Better to get the mating surfaces lined up than to quibble over degrees. One degree difference will give you just about 1 foot in a hundred.

Last edited by Ed LaFontaine; 23rd October 2012 at 05:55 PM.
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Old 23rd October 2012, 06:46 PM   #1217
tinitus is offline tinitus  Europe
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theory and practice, not always the same thing

I just wonder what the exit angle is at the end of a phase plug like this one
theoretically probably completely wrong
sounds ok tho
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Old 26th October 2012, 05:57 PM   #1218
jzagaja is offline jzagaja  Poland
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Mummy.4 - 12BR70+D800Ti. Hope aquaplas will help a little.
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Old 26th October 2012, 10:56 PM   #1219
gedlee is offline gedlee  United States
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Originally Posted by AndrewT View Post
Is 6degrees the half angle?
It was 6 or 6.5° (I don't remember the decimal places) - half angle.
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Old 28th October 2012, 07:36 PM   #1220
jzagaja is offline jzagaja  Poland
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Aquaplas brushed without turntable.
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