171.899UK and 171.900UK User Manual
Transmitter and Receiver
Setting up
The IEM58 has been designed with simplicity in mind and requires minimum effort to set up.
There is just an illuminated button, USB-C charging port and 3.5mm stereo jack on each unit.
It is advised to charge the transmitter and receiver fully (2 hours each) from USB before first use.
Connect a standard 5Vdc USB charger to the USB-C connector on each unit for recharging.
The push button will light solid green when charging (…or blue/green if the unit is switched on)
The green light will go out when charging is complete.
Connect a stereo line level signal to the transmitter via the 3.5mm stereo jack on top.
This can be the headphones output, aux out or monitor out from a mixing console.
Note: it may be necessary to use leads or adaptors that convert the mixer output connections to a
3.5mm stereo plug for the transmitter.
Connect the supplied in-ear headphones (or other 32Ωtype) to the 3.5mm jack on the receiver.
This output could also be used as a line input for an active speaker or mixing console if required.
The transmitter and receiver may already be paired with each other when bought as a set.
Additional receivers (171.899UK) may be bought for multi-listener applications.
The pairing procedure between transmitter and receiver is mentioned further below.
The push button on each unit should be pressed and held for 3 seconds, which will cause the push
button to flash blue. When both transmitter and receiver are flashing blue, they will connect if they
are already paired and the push buttons will change from flashing to solid blue.
When this happens, the transmitter will be sending audio wirelessly to the receiver.
Pressing the button on the transmitter or receiver for 5 seconds will cause the push button to flash
blue and green at the same time. This is now in pairing mode and removes any previous pairing
setting. When a transmitter and receiver are flashing blue and green together, they will pair
automatically, and the LED will change to continuous blue when paired and connected.
