Multi pattern U47 schematic

[kojoboadi]

Just remembered, it was because I had used turrets on mic pcb and a turret wasn’t connecting on the back!
Made sure all connections were working then worked like a charm.


Haven’t used it in a while but after holidays will test again and see if it still works!!!

Thank you so much—I really appreciate it! I’ve used many of your posts as guidance while building my own setup. I think I need to rewire the grounds on the T.Bone STC 7000 PSU because I’m getting some hum. However, with the Takstar PSU, it works great with no issues. I just need to bring the heater down to 5 volts.

What values would you suggest for the B+ voltage and R1/R2 resistors? Currently, I’m at 105V with 1G for both.

 

[Spencerleehorton]

As this multi pattern mic should essentially work at 120, 60, 0, I use mine at 120v rather than 105v
Heaters at about 5.2v seems about right, have a play and see what suits you.
Merry Xmas bud.

 

[kojoboadi]

As this multi pattern mic should essentially work at 120, 60, 0, I use mine at 120v rather than 105v
Heaters at about 5.2v seems about right, have a play and see what suits you.
Merry Xmas bud.

I need some advice—I’ve assembled what appears to be the same PSU as yours, the TPSU_2xFIL in the Tbone Retro PSU. Everything is set up, and the voltages have been adjusted accordingly, but my heater doesn’t seem to have enough current, causing a significant voltage drop when connected to the microphone.

Would you mind sharing the values you used in yours? I’d really appreciate your help!

Thanks in advance!

 

[Spencerleehorton]

i'll take a look in a few days and get back to you