MEElectronics EDM Universe D1P - Manual (Page 11)

How to Wear: Inserting Earpiece
Each earphone has a channel indicator with an R for right and an L for left.
The inline microphone and remote is located on the cable for the right channel.
Make sure the ear tip is secure on the earphone nozzle.
Pull up on the top of your ear with the opposite hand to open your ear canal
and insert the ear tip into your ear canal.
As you are inserting the ear tip into your ear canal, adjust the angle as necessary to enable the ear tip
to fit deeper into your ear canal, creating a seal. Moistening the ear tip prior to insertion may make
insertion easier.
Once inserted properly the ear tip should not be visible and outside noises should be attenuated. To
test for a seal, you can snap your fingers next to your ear.
If you feel pressure in your ear, pull back on the earphone housing slightly to release the pressure
without breaking the seal.
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Note: If you are having issues
achieving a seal, try different ear tips
and/or different insertion angles.
Without a proper seal, the sound will
lack bass and sound tinny.