I have an NBV4 wired with 20g wire between the board and the RC port, the RC port and the battery, the board and the LED strip, and the REC port and the LED strip (see the thick wires in the picture). I'm using a 15A continuous draw battery, and I am getting static out of the speaker when I ignite the saber. It's fine without the blade attached, but the color and the sound is messed up when I connect a blade. I've tried 32 separate blades on this saber and the same thing happens every time.
I'm using the following:
16mm Anti Vandal Momentary Red Dot/Ring Switch
20mA DynaOhm™ Variable Resistor
Saber Essentials 28mm Stealth V2 Speaker
330 ohm SMD 0603 resistor
Pixel PCB connector
Switchcraft 2.1mm Power Jack
Nano Biscotte Sound Module V4
DM Sony Li-Ion 18650 3.7V 15A 3120mAh PCB Protected Rechargeable Battery