[Harp-L] number of crystal vs. ceramic jt30's

[Dan <billybudd1313@xxxxxxxxx>]

I think it's also important to note that crystals tend to degrade over time, and under stress.  Heat and moisture can render a crystal useless in no time.  I'm not sure about the longevity of ceramics.  Anyone?   Is it a quality control thing, or the nature of the technology?  
 
When we extrapolate back to try and answer the original question (i.e. how many of each?)  using #'s of old microphones we find today, I think it's important to account for units that failed or wore out.
 
As a side note:  If you can find an old crystal that works..... can be some great sound.   Just don't leave em in the car in summertime.
 
 
Message: 18        
   Date: Fri, 27 May 2005 11:05:41 -0500
   From: "Gary Bohannon" <beauxart2@xxxxxxxxxxx>
Subject: Fw: [Harp-L] number of crystal vs. ceramic jt30's

Judging from what I've seen, the ceramics are kinda rare compared to 
the 
crystal JT's... seems like for every 20 crystals I see an old ceramic.  
Most 
of the ceramics I have, and have seen, were from the '60's, which 
coincides 
with the fact that just about every late '60's/early '70's crystal JT 
I've 
found is usually dead.  Seems like the quality control of the '60's 
crystals 
really fell off, I'm sure that's why Astatic must of started to produce 
more 
ceramics at that time.
The ceramics are nice sounding mics, real even and kinda mellow... 
great for 
higher key harps.

Some of the big time harp mic collector guys could probably weigh in 
here 
and give a more educated opinion.

Hope that helps,
Gary B.
NashVegas



		
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