U47 wiring question
Hi, I'm building a U47 clone, and I have a question about basic interpretation of the schematic - how to translate into real-world.
Attached is the U47 schematic. Circled (or ovaled) in red is the ground connections.
Would one interpret this literally - ie, take the lead off C1, attach it to the lead off R2, then to the lead off the can shield, then the lead off R8, etc, on down to the ground at the binder/tuchel connector...or would one literally have some kind of bus bar to which all the connections are made up/down the mic?
Or, would one actually take a wire from each to a star ground point at the bottom of the mic, meaning literally have 7 wires coming down to a star ground internally at the mic. Lead off C1 to star ground, lead off R2 to star ground, lead off can shield to star ground...
- forgive me I've not had the luxury of a real '47 to open, although I've tried to figure this out from many pix.
I know this newbie eye-rollingly simple for you guys, so sorry for that. But I just don't know how to interpret this correctly.
Thank-you,
Mike
Hi, I'm building a U47 clone, and I have a question about basic interpretation of the schematic - how to translate into real-world.
Attached is the U47 schematic. Circled (or ovaled) in red is the ground connections.
Would one interpret this literally - ie, take the lead off C1, attach it to the lead off R2, then to the lead off the can shield, then the lead off R8, etc, on down to the ground at the binder/tuchel connector...or would one literally have some kind of bus bar to which all the connections are made up/down the mic?
Or, would one actually take a wire from each to a star ground point at the bottom of the mic, meaning literally have 7 wires coming down to a star ground internally at the mic. Lead off C1 to star ground, lead off R2 to star ground, lead off can shield to star ground...
- forgive me I've not had the luxury of a real '47 to open, although I've tried to figure this out from many pix.
I know this newbie eye-rollingly simple for you guys, so sorry for that. But I just don't know how to interpret this correctly.
Thank-you,
Mike
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Hope you find your answers by someone knowledgable. Neumann mics were the basis of many chinese mics. The MXL is a good starting point to some (me). Not sure which Neumann it resembles the most. I read from the homepage that the schematics, not just the shape, is copied, and by just replacing the parts with better quality, one can have a huge difference. A diaphragm exchange is also to prefer. Try to study the inards of a few cheap mics with similar qualities and see if they are close the your U47 schematic.
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Hi Rewind, thanks for your insights. Right now my mic collection is in Huntington Beach, so I don't have any to tinker with.
How has anyone else who has made a clone handled the grounding?
Thanks so much,
Mike
How has anyone else who has made a clone handled the grounding?
Thanks so much,
Mike
Hi again Rewind, and all,
Here's a comment Dan from GroupDIY shared regarding this; I thought it worth repeating in case this helps anyone else:
"There is only one ground wire running up to the capsule end. It connects from the tag board at the bottom of the mic and goes to the ground pin on the headbasket connector. The ground sides of C1, R2 are tied together on this pin. The VF14M, being a steel tube, has a shield connection on pin 3 of the tube socket and this pin is also connected to the ground pin on the headbasket connector. R3 is connected there.
The transformer is connected to the tag board ground which goes back to the Tuchel connector, together with the wire for the filter cap.
It's pretty much like you see it on the schematic."
--MagnetoSound aka Dan
Here's a comment Dan from GroupDIY shared regarding this; I thought it worth repeating in case this helps anyone else:
"There is only one ground wire running up to the capsule end. It connects from the tag board at the bottom of the mic and goes to the ground pin on the headbasket connector. The ground sides of C1, R2 are tied together on this pin. The VF14M, being a steel tube, has a shield connection on pin 3 of the tube socket and this pin is also connected to the ground pin on the headbasket connector. R3 is connected there.
The transformer is connected to the tag board ground which goes back to the Tuchel connector, together with the wire for the filter cap.
It's pretty much like you see it on the schematic."
--MagnetoSound aka Dan
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