Hey all,
Im finally getting around to building my personal M49c after many months of waiting... All the parts are finally in one place and ready to assemble. I have an old ac701 that was pulled out of an old build, should still work fine. Have a 6s6b-v that ill use for testing and calibration before throwing in the real deal...
Parts:
M49 body from Flea
Neumann K49 Capsule
Haufe BV11 Transformer
Mouser BOM
GAC 7 Cable
German Tuchel Connector
Photos of the flea body mechanicals.
As I've never held a real m49, I will have to go from pictures and the schematic. The only reasonable closeups I could find were from Klaus's m49v tear down (Photos below from Klaus's site: Neumann M49V: Complete Tear Down and Analysis) So, thats what Ive been studying.
. . .
Parsing from mostly the overhead photo I landed with this layout so far... Realizing I can run wires in a routed channel in the black poly material underneath the turret board. The layout of the flea vs the original seems pretty darn close.. Mounting holes and pass throughs seem a bit different. But I think I can sort it out for the most part. I may drill a small hole in the board to pass the 5M resistor wire through just like the neumann does.
Since my transformer is internally strapped I don't really have traditional need/use of the small vertical turret board. So I might use that as a convenient breakout point for the incoming wires so i can meter them easily in testing.
Main questions moving forward:
So, I've mapped out most of what I have got to do next. I had a question about components I can leave out if I am NOT doing a calibration input. I was imagining leaving out R12. But do I need c3 or R4, or C8? I could imagine needing those but I don't know as much as y'all experienced wizards out there. Unrelated to the calibration circuit, I've been advised to leave out C4 as well. And I've raised R1/R5 to 250M.
What kind of switch is appropriate for S2? I want to make sure its the right one in that HIGH Z position.
Neumann used:
Thanks so much for the help and advice!
Im finally getting around to building my personal M49c after many months of waiting... All the parts are finally in one place and ready to assemble. I have an old ac701 that was pulled out of an old build, should still work fine. Have a 6s6b-v that ill use for testing and calibration before throwing in the real deal...
Parts:
M49 body from Flea
Neumann K49 Capsule
Haufe BV11 Transformer
Mouser BOM
GAC 7 Cable
German Tuchel Connector
Photos of the flea body mechanicals.
As I've never held a real m49, I will have to go from pictures and the schematic. The only reasonable closeups I could find were from Klaus's m49v tear down (Photos below from Klaus's site: Neumann M49V: Complete Tear Down and Analysis) So, thats what Ive been studying.
. . .
Parsing from mostly the overhead photo I landed with this layout so far... Realizing I can run wires in a routed channel in the black poly material underneath the turret board. The layout of the flea vs the original seems pretty darn close.. Mounting holes and pass throughs seem a bit different. But I think I can sort it out for the most part. I may drill a small hole in the board to pass the 5M resistor wire through just like the neumann does.
Since my transformer is internally strapped I don't really have traditional need/use of the small vertical turret board. So I might use that as a convenient breakout point for the incoming wires so i can meter them easily in testing.
Main questions moving forward:
So, I've mapped out most of what I have got to do next. I had a question about components I can leave out if I am NOT doing a calibration input. I was imagining leaving out R12. But do I need c3 or R4, or C8? I could imagine needing those but I don't know as much as y'all experienced wizards out there. Unrelated to the calibration circuit, I've been advised to leave out C4 as well. And I've raised R1/R5 to 250M.
What kind of switch is appropriate for S2? I want to make sure its the right one in that HIGH Z position.
Neumann used:
Thanks so much for the help and advice!