Hi all,
I'm at a stopgap in building a Hairball Silver 500 mic pre. I've finished the input stage, zobel, and power sections, but I am at a loss on how to wire a Ed Anderson EA2503 to the Elements (silver) PCB.
I was communicating with Mike Mabie who was very helpful, but eventually we both got stuck.
I am here to ask the community for help to finish this part of the build.
Mike gave me a 2503 schematic, then later one with handwriting on it indicating the HI and LO Primaries.
The EA2503 has 8 colored wires like the original, but only four will be attached to the PCB.
What I need to know is what to do with the remaining four wires. The connections to the PCB pads are as follows:
1. Primary HI - RED
2. Primary LO - BROWN
3. Secondary HI - BLUE
4. Secondary LO - ORANGE
This leaves green, yellow, violet and grey.
Are any of the below possible solutions?
1. Solder together grey(7) and violet(8), cut short and tape to avoid short, and also do the same with green(3) and yellow(5)
2. Solder all four (grey violet green yellow) together and cut and tape
3. ??? (suggestions?)
Mike also suggest possibly connecting grey(7) & violet (8) with a relatively high ohm resistor, which would mimic some resistance of the circuit of a meter.
I'm basing most of this thinking from handwriting on a schematic that indicates four terminations of the output on the 2503. This is attached.
Any help is very very much appreciated.
Thanks
I'm at a stopgap in building a Hairball Silver 500 mic pre. I've finished the input stage, zobel, and power sections, but I am at a loss on how to wire a Ed Anderson EA2503 to the Elements (silver) PCB.
I was communicating with Mike Mabie who was very helpful, but eventually we both got stuck.
I am here to ask the community for help to finish this part of the build.
Mike gave me a 2503 schematic, then later one with handwriting on it indicating the HI and LO Primaries.
The EA2503 has 8 colored wires like the original, but only four will be attached to the PCB.
What I need to know is what to do with the remaining four wires. The connections to the PCB pads are as follows:
1. Primary HI - RED
2. Primary LO - BROWN
3. Secondary HI - BLUE
4. Secondary LO - ORANGE
This leaves green, yellow, violet and grey.
Are any of the below possible solutions?
1. Solder together grey(7) and violet(8), cut short and tape to avoid short, and also do the same with green(3) and yellow(5)
2. Solder all four (grey violet green yellow) together and cut and tape
3. ??? (suggestions?)
Mike also suggest possibly connecting grey(7) & violet (8) with a relatively high ohm resistor, which would mimic some resistance of the circuit of a meter.
I'm basing most of this thinking from handwriting on a schematic that indicates four terminations of the output on the 2503. This is attached.
Any help is very very much appreciated.
Thanks
