I found this Pentron MM4 microphone mixer and would like to try using it for recording. It has 4 channels each going through one section of a 12ax7. I thought I would try the circuit as is and then simply wire 2 channels with cascading gain each through 2 sections of 12ax7 with 2 outputs instead of 1.
I dont have much experience with this but understand some basics. I have not tested it yet. I will definitely replace the power cord with a 3 prong and most likely the filter and cathode bias caps. should the selenium rectifier be replaced? How do you do that without changing the B+ voltage?
Any ideas or suggestions are welcome thanks for your help
I dont have much experience with this but understand some basics. I have not tested it yet. I will definitely replace the power cord with a 3 prong and most likely the filter and cathode bias caps. should the selenium rectifier be replaced? How do you do that without changing the B+ voltage?
Any ideas or suggestions are welcome thanks for your help
Comment