rascalseven
Well-known member
I posted this in another thread, but it occurred to me it might be good to post it individually as people might not read the other thread, so here it is.
The BA183 has no silkscreening to help in populating it, and it seems the vast majority of 183's floating around have only the output section populated, so I hope this will help people out. There's a lot of Neve iron out there that needs a circuit to go with it :wink:, so don't be afraid to snag some BA183's for your Neve project. They're almost always on ebay - usually in pairs- for pretty reasonable.
The first picture is of a typical BA183AM (output-only loaded) with the missing preamp components drawn in (pins N-V). I took the pic in the shutter of my front window so you can see the traces on the other side and then drew in the additional component layout using Powerpoint.
The second picture is of a completely populated and refurbished card. When I refurbish one of these I always install new transistors, new electros and a new 47-ohm/1-watt resistor in the output section. The 47-ohm resistor is mounted immediately below the 2N3055 heatsink, and it just cooks. I always replace the original with a fresh one as a matter of caution.
Hope this is helpful!
Peace to all,
JC
The BA183 has no silkscreening to help in populating it, and it seems the vast majority of 183's floating around have only the output section populated, so I hope this will help people out. There's a lot of Neve iron out there that needs a circuit to go with it :wink:, so don't be afraid to snag some BA183's for your Neve project. They're almost always on ebay - usually in pairs- for pretty reasonable.
The first picture is of a typical BA183AM (output-only loaded) with the missing preamp components drawn in (pins N-V). I took the pic in the shutter of my front window so you can see the traces on the other side and then drew in the additional component layout using Powerpoint.
The second picture is of a completely populated and refurbished card. When I refurbish one of these I always install new transistors, new electros and a new 47-ohm/1-watt resistor in the output section. The 47-ohm resistor is mounted immediately below the 2N3055 heatsink, and it just cooks. I always replace the original with a fresh one as a matter of caution.
Hope this is helpful!
Peace to all,
JC