So, four 8-ohm speak-
ers wired this way will
yield an 8-ohm load.
The wiring diagram is
shown in (10).
Power rating
While it is usually not
an issue, most speak-
ers are rated for one
watt of power and
most decoders will
only put out a watt or
two. The total power
rating of an array of
speakers will be the
rating of the indi-
vidual speaker times
the number of speak-
ers in the array. For
example, three 1-watt
speakers in an array
will handle 3 watts.
So, now you can see
how speakers can
be matched to the
specifications of your
decoders. For a bit more in depth on speaker specifications,
check out this month’s Mr. DCC’s Workbench. There is a bunch
of data on my web site. I suggest you start at the speaker page
and work from there.
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10: Four speakers in a series-paral-
lel array – the final impedance will
be the same as the speaker imped-
ance – 8-ohm speakers will yield an
8-ohm load.
10
