Well, dudes. In case we comparing the posts dates here:
http://www.groupdiy.com/index.php?topic=49758.0
Topic: D-U47 FET Microphone Project PCB ( Coming Next week ) (Read 2141 times)
« on: 2012-09-04, 08:34:31 »
and here:
http://www.groupdiy.com/index.php?topic=48056.0
Topic: U47 FET pcb. (Read 3460 times)
« on: 2012-03-15, 03:22:56 »
It is fine with me to give people more options.
@poctop : if you have a reason I shouldn't offer my PCB's, just drop me a mail.
If you need price fixing, no prob as well. If I can offer same price as yours incl. shipping, let's stick to it - I appreciate your work too.
U47 was built at this nicey black PCB at least 2 times, AFAIK.
The PCB was designed for my friend - he actually started the idea with this PCB,
I just draw it and brought files to factory and asked for best quality they can offer for high impedance circuit.
I wanted to make a mic for me, but unfortunately plans have changed
(passed some time at hospital with heart probs, recovery, blabla, than got a bunch of work). Well, in 2013.
I asked some photos from Milan, hope, he will post them here.
Funny, but:
just need to remind that the PCB High impedance section isolation strategy is a critical aspect of my design
Yes, it is MUST and BASIC thing... Otherwise the mic will work incorrect.
The PCB on photos made from very high quality material. Tracks spaced well.
Wash it with IPA, take down residue with pressed air, till it shines, dats all.
Want to mind piezo-ceramics in case of whatever. Microamperes and kilovolts. Same sh&&t, same strategies, well, already been there)
Well, the picture of PCB (comp side and bottom side, all built at one PCB):
(just click at attached picture).
I'd already started something similar, but for the 87ish style bodies that are being used for the U1621. Neumann actually made a microphone that was a fet47 circuit in a u87 style body, but I can't find the model number anywhere to bring up a picture.
