The Br for grade N50 is 14500, IIRC. Even with Alnico the Beyer N260 field is 0.6T--and those are small suckers. I measured 0.82T for 1/4"x1/4"x1" over 0.064"...
Hi, I didn't ask, maybe you could mail to Uwe to check? Id imagine a spice simulation followed by some winding or matching to a comercial transformer would...
... I measured 0.82T for 1/4"x1/4"x1" over 0.064" gap with NO magnetic return circuit or iron backing. I'm not sure you should use steel for the return...
Hi, This is my first post to this list and my first attempt in mic building. Last year I bought a pair of in-ear binaural microphones from Microphone Madness (...
Hey all, Here I have two brand new Electro Harmonix 12AT7 tubes. I bought them for my el-cheapo tube mic and didn't care for their character. I would,...
I have a few general questions that I hope this excellent group can help me with: 1.What is the usual connection between the XLR pins and the diaphragm ...
I'll give this a shot. ... diaphragm ... Have a Look at this file: GenChinaMic.pdf It's in the Files section in the Zapnspark folder. It's a typical knockoff...
... diaphragm ... it, ... dB? ... quickly ... this ... capsule, ... You would be better off starting with the NT2 schematic, which is available on the web...
I dunno... We are talking of less than 20 bucks here, there will be many uses for that pair of AT7's... just keep'em! BUT... a 12AX7 is NOT a tube mic, way too...
Hello Everyone There are a few other tubes I would recommend you try. I've never had much luck using 12axy7 tube in mics. I would try 6072( my personal ...
Hello Everyone I have a small cache ( around 20 ) of old US made 6072s (GE 5 star) and 12ay7s. They were good pulls from I forget what. Maybe Macintosh amps....
While I can't really speak of tap pitches, I can say that the 12AT7s seem less bassy and clearer on the top end than the 6072s. Maybe even quieter. Of...
In the Files section, Zapnspark folder see: GenChinaMic.pdf GenChinaMod.pdf BiasingFETs.pdf GenMXL990.txt In the Photos section, Zapnspark folder see 4 photos...
Brad, I believe your question was about increasing the polarizing voltage to the capsule and not about trying to increase the P48 phantom supply. It so, I...
Brad, In designing anything, there are tradeoffs. in the case of a p48 microphone, the big, huge limiting factor is the p48 itself and that it is current...
Neat! After discussing chinese mic mods I ended up getting lazy and just buying a couple CAD m179 dual diaphragm condensers. Thes are a bit unusual in that ...
Les, Thanks for passing along that sound file. I enjoyed that. I had an opportunity to record some live music around Christmas this last year. That didn't work...
... is ... bias ... will ... Sorry for my half serious answer, I meant to say that after opening up an NT1-A I realized it was not a good candiate for DIY....
Hello Mr ZAP :) I checked the file, there seems to be some odd signal at 9668.41Hz, 10551.27Hz and 11434.13Hz about 4dB above the noise floor are those from...
Jim, I do that department of redundancy department thing all too often as well. I made a mistake too...the 12 string was mic'ed with an early modded unidyne ...
Les, Check out this SOUNDROOM site: http://oktava.com/ A very pleasant fellow to talk to. I got a replacement for a defective MK/MC 012 mic clip from them. ...
Hello Everyone I am thinking of building what is basically a cross between the AT phantom tube mic and the Naiant Studios MSH-4. I'll be using the same 6418...
... AT ... same ... with. ... 2665 ... the ... additional ... battery. ... something ... hoping ... and ... Are you using transformers? It's probably a nit but...
I have given up trying to con some poor soul into building my "Frankentube" microphone ;-) Apparently, some folks find that design--um--terrifying. I have...
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