UXA Series Owners Manual
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.
Load Matching
Each output of the device can be optimised to drive either a low impedance load (e.g. 2, 4 or 8 Ohms), or a
Constant Voltage (C.V.) using the Load parameter in the Output menu. There are several C.V. settings (25V, 70V
and 100V Line) which determine the maximum RMS voltage that the amplifier will produce. Select the one
which is appropriate for the installation. A number of low impedance settings (depending on the model) are
also available. Although it is not critical that this setting matches the impedance of the connected load, this will
maximise the power that is available for the load.
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Additionally, the channel 2 output is duplicated on the NL4 connector for amplifier channel 1 for Bi-Amp wiring.
Similarly, the channel 4 output is duplicated on the NL4 connector for amplifier channel 3. This can be useful for
making a connection to two loudspeakers with one 4-core cable (i.e. Bi-Amp).
On the UXA4810 model, all outputs are Bi-Amp; each NL4 connector carries two amplifier outputs – Channels
1&2, Channels 3&4, Channels 5&6 and Channels 7&8.
In addition, the channel 1 or channel 3 connector (all the NL4 connectors on the UXA4810 model) can also be
used if the pair of amplifier channels is being operated in bridged mode.
Summary of Contents for UXA4406 series
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