92Figure 65: sending pink noise to the speakers8.12 SAVE THE PRESETLast but not least, don’t forget to save the preset to make sure the settings of your speaker layout will not be lost.IMPORTANT NOTE: The SDP-75 needs to be synchronized on an audio clock, either external (Slavemode) or internal (Master mode) in order to produce the pink noise. If a Digital source is selected withno synchronization signal, the pink noise won’t be produced. In such case, we simply recommendselecting an analog source.