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10
Variable‑Level Audio Outputs
A variable-level output, such as a headphone jack or certain RCA-type
outputs, provides an audio signal that changes with the volume level
set on the audio source. As the volume of the audio source is adjusted
up and down, so is the audio signal strength sent to the transmitter.
This can affect the quality of sound generated by the headphones, and
may require an adjustment of the volume level of the audio source to
produce a signal strong enough for the transmitter.
Hints:
• On most bookshelf-type or compact stereo systems, inserting a
headphone plug into the headphone jack results in automatic cutoff of
the regular, or hard-wired speakers.
• Most TVs, regardless of age or price, have variable outputs. If you
are unsure which of your TV audio outputs is xed, refer to the TV
instruction manual. Some TVs have outputs that can switch between
variable and xed. When given a choice, xed is always recommended.
Listen safely!
Enjoy your headphones at a safe volume. Avoid or limit the amount of
time you listen at higher volumes—permanent hearing loss may occur if
the headphone is used at too high a volume. If you experience a ringing
in your ears, or your own voice and other sounds seem mufed, stop
using the headphones and consult a hearing professional.