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Junior Varsity
Dim tweeter
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<blockquote data-quote="Tim McCulloch" data-source="post: 216732" data-attributes="member: 67"><p>Eventually ferrofluid get thicker, stickier, and will affect free movement of the voice coil. This will show up as an impedance variation (compared to a reference unit) and will have audible/measurable magnitude differences.</p><p></p><p>I'm not a fan of "aftermarket" HF parts. The closest we ever found were made by Radian and while not exactly to JBL spec, were pretty consistent in our inventory of 2445 drivers. The rest that we tried were shit, frankly. See Riley's post.</p><p></p><p>Art's advice on ferro, diaphragm alignment, and freq sweeping is spot on.</p></blockquote><p></p>
[QUOTE="Tim McCulloch, post: 216732, member: 67"] Eventually ferrofluid get thicker, stickier, and will affect free movement of the voice coil. This will show up as an impedance variation (compared to a reference unit) and will have audible/measurable magnitude differences. I'm not a fan of "aftermarket" HF parts. The closest we ever found were made by Radian and while not exactly to JBL spec, were pretty consistent in our inventory of 2445 drivers. The rest that we tried were shit, frankly. See Riley's post. Art's advice on ferro, diaphragm alignment, and freq sweeping is spot on. [/QUOTE]
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