Crystal Element Output

The lowdown on the Mississippi Sax. Just for Google, this section is about harmonicas.

Crystal Element Output

Postby songdog » Mon Oct 30, 2006 8:19 pm

I just picked up a couple of JT30s. Do the vintage crystal and ceramic elements typically found in the 30s have a lower output compared to the Shure CR and CM elements? Mine do.

I seem to recall reading somewhere here that the crystals like to play into a higher amplifier input impedance so maybe this is some of my problem?
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Postby ricochet » Mon Oct 30, 2006 8:47 pm

Yes, crystals are very high impedance.
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Postby hashtaff » Mon Oct 30, 2006 11:12 pm

You could try an Impedence transformer.
Youcan put them in-line with your mic bettween it and the amp.
I think the sell them on the JT30 site. I have One I use for a low output vintage mic and keep it permanently attached to it.
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Postby jeffl » Mon Oct 30, 2006 11:42 pm

hashtaff wrote:You could try an Impedence transformer.
Youcan put them in-line with your mic bettween it and the amp.
I think the sell them on the JT30 site. I have One I use for a low output vintage mic and keep it permanently attached to it.
The one I have has two lines out,which is handy for stage purposes.
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Postby songdog » Tue Oct 31, 2006 2:36 am

hashtaff wrote:You could try an Impedence transformer.
Youcan put them in-line with your mic bettween it and the amp.
I think the sell them on the JT30 site. I have One I use for a low output vintage mic and keep it permanently attached to it.


I didn't see any listed at the JT30 store. You guys know of any other sources for the transformers?
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Postby hashtaff » Tue Oct 31, 2006 3:35 am

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Postby jeffl » Tue Oct 31, 2006 2:17 pm

I got mine right outa the front display case at my little local music store; one thing I like about that joint is that it caters to performing musicians, and the owner is a gigging musician who runs a sound company, so he is extremely helpful when it comes to technical and equipment issues. Radio Shack often has what you need in wiring supplies also, but communicating with some of their employees can be an issue if neither of you know exactly what you're talking about,lol! (BTW,mine is made by Conquest,a supplier of recording connectors)
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Postby songdog » Tue Oct 31, 2006 3:32 pm

hashtaff wrote:http://proaudiomusic.com/sound_systems/impedance_transformer.htm


OK, thanks. Those transformers can be purchased just about anywhere. I thought maybe you were refering to one with parameters specific to the real high impedances associated with crystal mics.
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