I bought this Calrec mic (a CB7C) along with a faulty Beyer M201 for £25. I can replace the capsule on the Beyer, but I thought I might get some fun out of the Calrec.
So, here it is:
Appears to be originally battery-powered with a DC-DC converter and unbalanced output.
What I'd like to do is put in a new circuit for 48V. I was thinking of either getting a board from another SDC and putting this in (maybe someone has an old board they replaced?), or making something on stripboard. My worries with strip board are the impedance between the tracks which could be an issue at the capsule end. If I do make my own circuit, I'd prefer transformer-balanced out as I have some small Beyer 1:5 and 1:10s which I can use.
Any thoughts?
Roddy
So, here it is:
Appears to be originally battery-powered with a DC-DC converter and unbalanced output.
What I'd like to do is put in a new circuit for 48V. I was thinking of either getting a board from another SDC and putting this in (maybe someone has an old board they replaced?), or making something on stripboard. My worries with strip board are the impedance between the tracks which could be an issue at the capsule end. If I do make my own circuit, I'd prefer transformer-balanced out as I have some small Beyer 1:5 and 1:10s which I can use.
Any thoughts?
Roddy