ln76d

Vintage AKG C12 - plastic rings
« on: August 15, 2013, 07:40:22 AM »
Does anyone knows what is material of plastic rings from the inside of C12 body? Polycarbonate or plexiglass or...? Eventually what thicknes of it can be?
« Last Edit: August 15, 2013, 08:21:05 AM by ln76d »


Sinsay787

Re: Vintage AKG C12 - plastic rings
« Reply #1 on: September 05, 2013, 08:44:52 PM »
I think they are .093 3/16 I used plexiglass before

micaddict

Re: Vintage AKG C12 - plastic rings
« Reply #2 on: September 06, 2013, 07:49:13 AM »
FWIW, the Ela M has a whole plastic frame inside and it's a plastic that degrades and crumbles over time.

ln76d

Re: Vintage AKG C12 - plastic rings
« Reply #3 on: September 06, 2013, 09:31:44 AM »
I think they are .093 3/16 I used plexiglass before

Realy thanks for help!
How this be in milimeters? 3/16(inch - i'm guessing) is almost 5mm - thickness, but what means 0.093?
Sorry, but i'm not using imperial metric system :D

ln76d

Re: Vintage AKG C12 - plastic rings
« Reply #4 on: September 06, 2013, 09:39:34 AM »
FWIW, the Ela M has a whole plastic frame inside and it's a plastic that degrades and crumbles over time.

ElaM had completely different mounting system, plastic is main structure without any metal frame - only with all around plastic housing.

zebra50

Re: Vintage AKG C12 - plastic rings
« Reply #5 on: September 06, 2013, 11:43:49 AM »
I think they are .093 3/16 I used plexiglass before

Realy thanks for help!
How this be in milimeters? 3/16(inch - i'm guessing) is almost 5mm - thickness, but what means 0.093?
Sorry, but i'm not using imperial metric system :D

3/32 = 0.09375

!
Ribbon microphone services
http://www.xaudia.com
Microphone blog

micaddict

Re: Vintage AKG C12 - plastic rings
« Reply #6 on: September 06, 2013, 01:00:39 PM »
FWIW, the Ela M has a whole plastic frame inside and it's a plastic that degrades and crumbles over time.

ElaM had completely different mounting system, plastic is main structure without any metal frame - only with all around plastic housing.

Yep, that's what I said; a whole plastic frame.
Question is, is it the same material as the discs in the C12?

OPR

Re: Vintage AKG C12 - plastic rings
« Reply #7 on: September 07, 2013, 02:36:55 AM »
I've been looking into this myself and it seems the first C12 came out in 1953 and polycarbonate was invented in the same year .Plexiglas(acrylic-Poly(methyl methacrylate) had been around since 1928 and was released on the market in 1933 according to wiki that is ;).
 I'd say(at a guess) it was most likely 3-4mm Plexiglas(acrylic-Poly(methyl methacrylate) because of the time frame and considering R&D of the mic would have been happening prior to1953....
It's What's Inside That Matters!

Open Plan Recording

[email protected]

http://www.openplanrecording.com/


 

Related Topics

  Subject / Started by Replies Last post
5 Replies
1999 Views
Last post January 17, 2019, 08:30:15 AM
by leitmo