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Series-Parallel and minimum
impedance speaker connection
Series-Parallel combinations of loudspeak-
TC Series amplifiers provide their highest power at their minimum impedance loading of
2
ers are used to acoustically balance systems.
ohms stereo or 4 ohms bridged mono. If your amplifier is subjected to impedances in any
In addition, by using different combinations
given frequency range that are lower than these nominal impedance minimums, your
of series and parallel connections, you can
amplifier will eventually activate its protection mode and temporarily shut off. To deter-
achieve optimum operating impedances,
mine minimum impedances, consider the combined impedances of all speakers operating in
-.
which will allow vou to extract maximum
each frequency range.
power from a given amplifier. You can also
use these combinations as a way of protect-
ing your speakers from being overdriven
and damaged by the amplifier.
Series
R
1
+
R2
=
combined impedance.
For example, if
R
1
and
R2
are both 4-ohn
speakers, the combined impedance is:
4+4=8ohms.
Parallel
RI
X
R2
-
=
combined impedance
RI
+
R2
For example, if
R
1
and
R2
are both 4-ohm
speakers, the combined impedance is: