Promowide SP1790 Manual De Usuario página 7

5. You should now be able to place the speakers freely from room to room without
disruption. Should there is any disruption (signal cuts off or carries distortion), press
the speaker's "AUTO TUNE" button to maximize the best reception.
If you hear interference from other components, switch on the channel control of
transmitter, and then move the speakers to other free location. You can re-adjust the
tuning control by moving it either channel 1 or 2 of the transmitter, then pressing
"AUTO TUNE" button for best reception.
When transmitting / receiving over long distances, the signal from the system will
become weaker.
6. Switching Off
a) For protection of the transmitter and power saving, the transmitter will cut
off automatically if there is no/weak operation input signal from audio
source for 4 minutes.
In other words, if the signal comes back, the transmitter will work again
automatically.
b) Press the ON/OFF button to turn off the speakers and the LED light goes
off, or simply press the ON/OFF button on the remote control unit. If you
use the remote control unit to turn off the speakers, the speakers will be at
stand-by mode for 5 minutes and the LED will be changed from blue to
yellow. You can switch on the speakers again by using the remote control
unit during the stand-by time. If there is no signal from the remote control
unit in 5 minutes, the speakers will automatically power off.
P.6