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When implementing the music distribution
system in an existing premise, a number of different scenarios may
be encountered in relation to wiring. If only one pair of wires is
available out of an existing home-run cable run, then only mono music
with a single in-wall speaker is feasible for that location. In
addition a Local Port pad must be used for that in-wall speaker. In
that event only premise-wide (or wholehouse) open voice paging is
equally available. Keep in mind that mono music is well suited for
most if not all commercial environments. It may also be just fine
for many homes with non-discriminating users.
If two pairs of wires are available out
of an existing home-run cable run, mono music with a single in-wall
speaker without any associated Local Port pad may be implemented.
For stereo output in that location a Local Port pad ought to be
associated with that pair of speakers. A desktop speaker set with
built-in local port may be chosen as well. A universal multimedia
speaker set may equally be chosen.
If three pairs of wires are available
out of an existing home-run cable run, stereo music with in-wall
speaker pairs is fully available. Keep in mind that there is a
limitation on the maximum length of cable run for each speaker set.
You do away with that limitation in cable length by adding a Local Port pad
or a Power Jack.
The above directives apply to the
entire premise wired in home-run topology and also set the variety
of music formats and sourcing capability that may be possible
depending on wiring conditions throughout the premise.
For a premise that is wired in
daisy-chain, there are many limitations imposed by that sort of
wiring for in-wall speakers. To do away with those restrictions, all
in-wall speaker sets must use a Local Port pad or a Power Jack.
All universal multimedia speakers may be used as is in that
environment. Desktop speakers with
built-in local port may all be used. The format as to mono or stereo
is conditioned by whether one pair or two pairs is available
throughout the cable chain.
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