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More than one speaker can be connected to each channel provided the total impedance
per channel is not less than
2 ohms
. In bridged mode the minimum total impedance
should not be less than
4 ohms
.
100V line operation
A single channel of an C5 can deliver 1250W in to 2 Ohms, therefore the RMS voltage at
the speaker terminals when delivering this will be √(1,250 x2) = 50V.
If each channel is not loaded to full capacity of 1,250W (typically a 70V / 100V application
will not load it this heavily) then the voltage will be higher than this because the power
rails will not be sagging so much; approximately 60V.
Dependent on which voltage you use, a single channel will drive a 70V line to within either
3dB or 1.3dB of maximum and it will drive a 100V line to within 6dB or 4.5dB of
maximum.
A bridged pair of channel can deliver 2,500W in to 4 Ohms which equates to an RMS
voltage of 100V or approximately 120V with a lower load than the full 2,500W.
Dependent on which voltage you use with a bridged pair of channels, the C5 will be able
to overdrive a 70V line by either 3dB or 4.7dB and a 100V line being driven perfectly or
overdriven by 1.6dB.