| Re: Repair JBL 2226H cone [message #73676 is a reply to message #73671] |
Sat, 25 August 2012 23:09   |
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Wayne Parham
Messages: 18789
Registered: January 2001
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Illuminati (33rd Degree) |
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Some third-party replacement cones are obvious, others are pretty good copies. The only real way to know if you have a genuine JBL recone is to buy it yourself, or through a shop you trust.
If you want to try and examine what you already have, there are several things to look for. One is the basic color and texture of the cone. All JBL cones have irregular "bumps" in the paper pulp on the backside. Lots of recone kits are smooth, which is a tell-tale sign it's a third-party cone.
The shade of grey is pretty consistent, although a genuine cone in the sunlight is lighter. They also tend to have a discoloration near the surround that most aftermarket cones don't have. None of that really helps, I expect, because you'd have to compare with a known good cone side-by-side to notice this anyway.
Truly the best way to know is to measure the speaker, as all genuine JBL cones measure very consistently like the published response chart. An aftermarket cone probably won't match, and some are way off. If they weren't, we wouldn't care so much.
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