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Post by ulriggribbons on Jun 4, 2024 13:06:10 GMT -6
This is a rarity for me (I'm normally on the giving mic advice side =) ).
I have 3 AKG 414's. One silver 1960's 414 (pre EB) , and a pair of 414 EB P48.
The P48 pair are sentimental, as I believe them to be originally from John Lennons NY studio. The person I got them from bought them from his estate( along with a U89 that I have). Have no documents/can't prove anything , but they are something I'll likely hang on to.
Both of them have failing nylon capsules. They pass audio, but with transients, it sounds like the diaphragm is hitting the back plate, as there is a click sound with the audio cutting out.
The Silver 414 (serial 569) I got as a disassembled box of parts, and rebuilt. The capsule in this mic is also caput. I think it's a Beezneez capsule from quite a few years ago. The original capsule I think I sent to Marik in the way back machine =)
So if you were in my spot, needing 3 capsules for 414's, what would you do?
For the EB P48's, would you go with Brass CK12 capsules, instead of nylon?
Thoughts appreciated
Regards
Jon
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Post by drumsound on Jun 4, 2024 13:38:54 GMT -6
I'd get brass CK12s for one of the known sources, probably our own mics at BeezNeez |
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Post by svart on Jun 4, 2024 13:46:44 GMT -6
Honestly if they were that special, I'd put them in a glass case and forget about using them. Keep them original.
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Post by damoongo on Jun 4, 2024 14:05:19 GMT -6
Tim Campbell in Denmark is well regarded for his ck12's and ck12 reskins. I think he's on this board too... timcampbel
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Post by mcirish on Jun 4, 2024 15:11:30 GMT -6
I don't think you will get a capsule from Tim. The DIY community have tried for a couple years but he's super buried and can't supply to DIY. My guess is that Ben is your best source. Keep the originals just in case you find someone good enough to reskin them.
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Post by hadaja on Jun 4, 2024 15:20:02 GMT -6
I have had a couple of EB Nylon capsules fail over the years.
I actually just went with AKG replacements direct from them and they were fine with no discernable difference in sonics.
Although I did no scientific testing.
I think I still have the original capsules floating around somewhere in my box of spares.
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ericn
Temp
Balance Engineer
Posts: 16,086 
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Post by ericn on Jun 4, 2024 15:35:55 GMT -6
I would probably just order a pair of Brass Capsules from Ben and be done with it.
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Post by opr on Jun 5, 2024 5:13:30 GMT -6
I'd definitely recommend the brass CK12 or a quality reproduction over the Nylon. I've replaced quite a few in P48 and EB and it's night and day improvement. I'm currently working on a batch of capsules so let me know if I can help.
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Post by chessparov on Jun 5, 2024 11:32:27 GMT -6
Removing nylons well is an important life skill.  |
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Post by guitfiddler on Jun 5, 2024 12:48:17 GMT -6
I'd definitely recommend the brass CK12 or a quality reproduction over the Nylon. I've replaced quite a few in P48 and EB and it's night and day improvement. I'm currently working on a batch of capsules so let me know if I can help. What about a brass capsule in a BUL-S? |
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Post by opr on Jun 5, 2024 18:07:13 GMT -6
I'd definitely recommend the brass CK12 or a quality reproduction over the Nylon. I've replaced quite a few in P48 and EB and it's night and day improvement. I'm currently working on a batch of capsules so let me know if I can help. What about a brass capsule in a BUL-S? Yeah that'd work too. The main requirement is that the polarization voltage doesn't exceed 60v. I also make a 70v version optimized for mics with higher polarization voltages. For example Rode Ntk and K2 etc |
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Post by Ward on Jun 6, 2024 13:28:20 GMT -6
Removing nylons well is an important life skill. I often find myself eyes and teeth into that work. |
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Post by Ward on Jun 6, 2024 13:29:19 GMT -6
What about a brass capsule in a BUL-S? Yeah that'd work too. The main requirement is that the polarization voltage doesn't exceed 60v. I also make a 70v version optimized for mics with higher polarization voltages. For example Rode Ntk and K2 etc a 70 volt version of a CK12? Wow, had no idea that was implemented in a design. Today is a good day to learn something new~ |
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Ari
Full Member
Posts: 35
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Post by Ari on Jun 6, 2024 19:35:31 GMT -6
these tend to fail because they have a foam ring whose job is to hold a gap through expansion. the foam disintegrates over time and eventually the capsule fails. you can fix the capsule by replacing the ring with a higher longevity foam, like crosslinked polyethylene
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Post by opr on Jun 6, 2024 20:57:28 GMT -6
Yeah that'd work too. The main requirement is that the polarization voltage doesn't exceed 60v. I also make a 70v version optimized for mics with higher polarization voltages. For example Rode Ntk and K2 etc a 70 volt version of a CK12? Wow, had no idea that was implemented in a design. Today is a good day to learn something new~ A Ck12 tuned to original specs would likely fail or not operate optimally under 70v polarization. When polarized, a microphone capsule back-plate statically attracts the diaphragm towards it, this has an effect on diaphragm behavior and the way a mic sounds. If the voltage is too high for a given design, The diaphragms movement is restricted which sounds flat and one dimensional,imagine the sound of restricting the movement of a speaker, in worst cases the diaphragm will suck to the back-plate and the capsule will fail . In the end a balance is required to get the most out of the given design and operating voltage for best sonics.
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Post by anders on Jun 7, 2024 1:37:58 GMT -6
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