NV500 Mic pre BUILD THREAD

[Joe Malone]

UNDER CONSTRUCTION

NOTES & ERRATA
R30 is marked on pcb as 100k but is 10k for current orange HPF led to be correct brightness.
The 2 x BA283AV SMD plug-in modules have been pre-biased so are plug-and-play and swapable.
You can check if bias is correct by measuring the voltage across the 12R 1W resistor you should have 1.3 to 1.4vdc after the module has been on for a few minutes and the red led in between the 2 slots is softly light up showing 24.6vdc has been reached after the long soft start.

Link to NV500 Build map
https://jlmaudio.com/builds/maps/NV500Map.html

Link to FetDI500v3 Build map
https://jlmaudio.com/builds/maps/FetDIMap.html

HPF PCB assembly before fitting and soldering to 4 pads under NV500 PCB

HPF PCB 640 1.jpg

HPF PCB 640 2.jpg

HPF PCB 640 3.jpg

HPF PCB 640 4.jpg

HPF PCB 640 5.jpg

HPF PCB 640 6.jpg

HPF PCB 640 7.jpg

HPF PCB 640 8.jpg

FETDI500v3 assembly before plugging onto NV500 PCB

FETDI500v3 640 1.jpg

FETDI500v3 640 2.jpg

FETDI500v3 640 3.jpg

FETDI500v3 640 4.jpg

FETDI500v3 640 5.jpg

FETDI500v3 640 6.jpg

FETDI500v3 640 7.jpg

FETDI500v3 640 8.jpg