T-3 crystal or CM

gheumann · Posted: Fri Feb 27, 2009 5:42 pm Post subject:

Another alternative is bicycle handlebar tape. But there is a notable ridge between grill and shell on this mic - and it is small - I don't think you need any help to hold onto it.

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jbone · Posted: Sun Mar 01, 2009 1:12 pm Post subject:

here's at least a temporary solution. they put a fat white rubber band around the broccoli we buy at the grocery sore. if you like broccoli, get a bunch and use the band around the front of your mic. may sound silly but it will definitely give you more to grip and if you don't like it, it comes off with no residue.
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harpastatic · Joined: 08 Aug 2007 Posts: 32

broccoli bands are the in way for gangsters to wrap their money BTW,good one jbone.

i would definitely sell the crystal seperately,i think you'd get much more money that way!

harpslinger · Posted: Tue Mar 03, 2009 12:29 am Post subject: Thanks again all

Has any body heard of bringing life back into a weak crystal?
I have (2) R7's (some of have heard my $200.00 sob story already)

It just seems to me if they could make them with a salt crystal initially that somehow a new salt crystal could be made to replace the old. I definitely have not looked inside but if they are just junk maybe I will take one apart to see how they are made.

Any Advice?

harpastatic · Joined: 08 Aug 2007 Posts: 32

i guess you could try boosting the signal with an output transformer.

www.jt30.com sells them.

check with one of the experts like greg first though!

gheumann · Posted: Wed Mar 04, 2009 4:50 am Post subject:

I've heard rumors of someone who rebuilds crystal elements but I've never been able to get to the source. An output transformer won't help. Of course it is possible, but it would take some very specialized equipment. I HAVE dissected a few. The diaphragm is attached to a pin that is connected to the crystal, and the diaphragm is fastened to the housing around the outer perimeter, which with Brush and Astatic crystals, anyway. The housing is crimped over to secure the diaphragm. I'm sure they did this with a special machine. There is no way to undo it that I know of.

Maybe I'll figure out how to do it and get into the business myself - I could get rich! However getting identical crystals might be impossible - and a different crystal would make a different tone, I would think.
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harpslinger · Posted: Thu Mar 05, 2009 12:05 am Post subject:

That sounds right .
Here is a link to a post from someone whio claims to be able to repair some of them.
http://groups.google.com/group/ha...34111743dd/0c481b917b7cbb75?pli=1

it is worth a try. I am going to take a dead one apart and pray for insight.

I have a question for you Greg, in response to Jeff's statement about the chrome being slick. You build mics with chrome fronts don't you? Have you heard anything from the players about them being slippery when wet.

I have some shure bullets and I was thinking of having the faceplates chromed. Now I am thinking of having them knurled first.
Any thoughts?

gheumann · Posted: Sat Mar 07, 2009 5:24 am Post subject:

No, I don't chrome my grills - more because of cost than slipperiness - but my grills are simply polished aluminum - and it has much more friction with your hands. I know I sound like I'm tooting my own horn but ask anyone who owns one of my mics - they are the most comfortable mics to hold of any bullet available.
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harpslinger · Posted: Sat Mar 07, 2009 6:50 pm Post subject: Polished Aluminum

Looks good,
The polished aluminum looks really good. I saw a sight in England for polishing metal and they have some incredible examples of polished aluminum. In fact they plate silver gold chrome etc. but the guy says polished aluminum is his favorite.
I noticed on the Charly Musselwhite mic the diameter in the grill and the wood gets smaller right behind the front edge then a little larger again to allow for the good grip, thats a great idea.
Approximately what diameter do you make your grills?

gheumann · Posted: Sat Mar 07, 2009 7:11 pm Post subject:

My grills are 2.34" in outside diameter - same as a JT30 but without the bumps. In the pic of Charlie's mic I think what you're seeing is the effect of glare. The mic goes straight back parallel with the rear surface of the grill for about 1/4" before it starts to taper. However I do offer an option I call a "grip shoulder" that does help grip the mic more securely. Pic of one with that option attached (hopefully.)

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