10 Bedrock SMxx operating manual © Bedrock Audio BV, 2019
The supplied charger includes adapters for use worldwide, and operates on
a wide AC voltage range of 100 – 240V. Do not use the charger if the casing
appears cracked or broken, or if it has been exposed to fluids or moisture.
Contact with components inside the charger while this is plugged in may
result in serious injury or death.
4.2. Safety precautions related to connectors
The Bedrock SMxx features a USB connector and an XLR connector (to
which the microphone is attached). If you connect external devices to these
connectors, please ensure that these connections are protected against over-
voltage and power surges. The voltage supplied to the USB port may not
exceed 5.5V. As the USB power circuitry is connected to the battery pack,
excessive voltage applied to the USB port may cause the battery pack to
catch fire or explode.
The XLR connector supplies 48V phantom power to the microphone. This
phantom voltage can be switched on and off through the hardware settings
menu. IMPORTANT: connecting equipment not designed for 48V phan-
tom power to the XLR connector (with phantom power switched on) may
permanently damage the connected device and/or the SMxx. The manu-
facturer explicitly denounces responsibility for any damages to third-party
hardware resulting from exposure to the Bedrock SMxx’s phantom power.
The “AC Volt meter” function of the device is intended for measuring audio
output levels of amplifiers and other audio equipment. NEVER connect the
XLR input pins to AC voltages over 40V; do NOT try to measure the AC
mains with your SMxx.
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