More Helpful Information - Acoustic Research AW771 Installation And Operation Manual

VI. More Helpful Information
i. About Fixed-Level Audio Outputs:
A fixed-level, or line-level audio output is considered ideal since it provides an
audio signal unchanged by adjustments to the audio source volume control.
Hint:
Fixed-level audio outputs from stereo receivers/amps will typically be
designated as Tape, Tape 1, and Tape 2 outputs, or VCR audio output
connections. These outputs are frequently marked on A/V equipment as
'TAPE OUTPUT,' 'TAPE OUT,' 'TAPE REC, or 'TAPE RECORD or REC OUT.'
Please note:
(PB) are INPUTS and will not work with the transmitter.
Fixed-level outputs from TVs are usually marked as 'Constant,' 'Fixed,' or
'Select.' If they are not marked as such, they are probably variable outputs (see
"About Variable-Level Audio Outputs" below). Outputs from VCRs are almost
always fixed.
Hint:
When connecting to the audio outputs of a VCR, remember that the
VCR must be playing a tape or showing a TV channel for sound to be
produced.
Hint:
If your VCR (or other audio source with line audio output jacks)
only has a single audio output, you will need another "Y" cable. It differs
from the "Y" Cable Adapter included with these headphones. It will have a
single mono male plug and 2 female left/right jacks. Connect the dual plugs
from the included "Y" cable adapter to the 2 female jacks on the second
"Y" cable, and then connect the single male plug of the second "Y" cable
to the single audio output of the VCR.
ii. About Variable-Level Audio Outputs:
A variable-level output, such as a headphone jack or certain line audio 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 does 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.
Hint:
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.
Hint:
Most TVs, regardless of age or price, have variable outputs. If you are
unsure which of your TV audio outputs is fixed, refer to the TV instruction
manual. Some TVs have outputs that can switch between variable and
fixed. When given a choice, fixed is always recommended.
Jacks labeled PHONO, CD, LD, DVD or tape or VCR playback
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