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Quick Start

warning
  • ALWAYS turn down the "Master Volume" before putting on in-ear headsets or headphones because the Switch Back M8RX is capable of driving most headphones to extreme levels that can damage your HEARING!
  • It is the user's responsibility to prevent hearing damage by virtue of excessive headphone "Master Volume" settings.

Connecting the System​

  1. Connect the appropriate input(s) as shown in the hook-up diagram.
  2. Set all volume controls to "Off" (full counter-clock-wise position), connect the headphones or in-ear monitors.
  3. Connect the M8RX to PoE+ power such as an in-line PoE+ power injector or PoE+ network switch using unshielded Cat6 cable (never use shielded Cat6 cables). The M8RX receives its power over the unshielded Cat6 cable. The Hear Technologies PRO Mixer Distro is a good choice for a PoE+ network switch. The M8RX can receive power on any pair of the unshielded Cat6 cable. Since the M8RX uses 100BaseT Ethernet, the pairs on pins 4/5 and 7/8 are unused and lend themselves for an easy way to implement a passive power supply. 48 volts DC can be applied to any pair and ground can be applied to any pair. The M8RX must receive 36 - 52 volts DC with a minimum of 320mA.
  4. Adjust the level at the input source (microphone gain, Dante source, etc.) until the RED clip LED's on the M8RX just come on and then reduce the input(s) until you have a bright BLUE LED.
note

Adjust the source for as much signal as possible without clipping. Higher input levels improve signal-to-noise and dynamic range.

  1. Mixer Adjustment: Once you have the signals optimized, turn the master volume to about 12 o'clock and then raise the desired input volumes. For best performance, avoid adjusting the master volume too high and running the inputs too low.