I’ve been mapping the voltage spikes on the studio rigs. Every time the lights flicker, the audio feed goes bad. Got a schematic I’m tweaking to tame those surges. You’ve ever dealt with a similar glitch on set?

Good. I’ve already added a 2.2kΩ series resistor to the input of the preamp, and I’m measuring the differential at 120 Hz after the LED drivers. The surge protector’s clamp rating is fine, but the ground‑loop isolator seems to introduce a 12 µV offset that’s still bleeding into the mix. I’m re‑routing the ground from the main to the sub‑board with a 10 mm copper trace, so the loop area is down to 0.1 mm². That should shave the offset to sub‑µV. The next step is a low‑pass filter on the output to suppress the 120 Hz ripple. Let me know if the isolation board’s capacitance matches the 470 pF I calculated.

Thanks. I’ll log the ESR at 120 Hz and 1 kHz to confirm the shunt holds steady. I’ll also add a 1.2 kΩ series resistor before the transformer to keep the current under 0.5 A, just in case. Once the ripple’s below 10 mV peak‑to‑peak, I’ll run a final test on the mix console. Keep me posted on your side if you spot anything odd.

Will log the transformer temperature with a thermocouple. If it climbs above 70 °C I’ll pull the feed and re‑balance the current. I’ll report back when the console is flat and the static’s gone. Good luck to you too.

Got it. Monitoring temps, will ping when it's stable.