Palmer PLB2X8 Manual De Usuario página 7

IN OpERATION
Please carry out all settings and cabling only when the amplifier is off.
The rear slide switch must be positioned in accordance with the desired
mode of operation (mono or dual/stereo). It has three clearly discernable
detent positions that are labelled as follows: DUAL 2x 8Ω, Mono 4Ω, Mono
16Ω.
In DUAL (stereo) mode, there is an 8Ω dummy load on each of the jacks
INPUT1 and INPUT2. It is possible to use only one INPUT if a dummy load
of 8Ω is required. However, it can then also only be loaded with 100W
RMS. The alternative impedances 4Ω and 16Ω can only be used in mono mode
via INPUT1. In this case, INPUT2 must not be used. Before turning on the
amplifer, please doublecheck the switch setting on the PLB2X8 and whether
an identical setting was selected on the amplifier and/or whether the
speaker jack with the corresponding impedance was selected.
On the front panel are two LED indicators, SIGNAL PRESENT for INPUT 1 and
2. The LEDs light up when there is an input power of 3-5 watts, indi-
cating that there is an input signal present. Logically, in mono mode,
only the INPUT 1 LED is illuminated. Each dummy load may be loaded with
100 watts continuous power. Because music typically constitutes a dynamic
signal, however, amplifiers with outputs of 120 to 150 watts can be con-
nected - especially with good cooling. In MONO mode, however, an ampli-
fier output of 250 watts should not be exceeded. With heavy loading, the
device can reach temperatures exceeding 70°C.
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