LD LDPREST1 User Manual Download Page 8

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To connect to a new auxiliary device, press the Bluetooth pairing button for around 2 seconds until the Bluetooth symbol flashes more rapidly.

The Bluetooth ID is now visible to other Bluetooth devices. Activate the Bluetooth function on the auxiliary device and search for nearby Bluetooth

devices in the Bluetooth menu. When the LD PRE ST1 appears under “available devices”, you just need to select it and the connection will be made

automatically. If this process is successful, the Bluetooth symbol is permanently lit on the front of the device and the Bluetooth ID is no longer

visible to other devices. This prevents unauthorized connections to the Bluetooth module. Playback from the auxiliary device can now be started. To

disconnect a currently paired Bluetooth device and to set the Bluetooth module ready to pair again, press the Bluetooth icon for around 2 seconds.

Pair the playback device and connect it again by selecting LD PRE ST1 from “paired devices” in the Bluetooth menu of the playback device.

MASTER VOLUME CONTROL

The master volume control is used to adjust the volume of the summed signal of all channels except the EMERGENCY channel. The EMERGENCY

channel bypasses the master volume control, and the signal is sent directly to the stereo line output, LINE OUT. The master volume control is

equipped with a ring-shaped LED display. This LED ring remains dark when there is no signal or only a very weak signal at the output, and starts to

light up white as soon as a sufficient signal level is detected.

PRIO

LED for the indication of an active priority mode related to MIC/LINE channels (priority levels 2, 3 and 4).

Three situations cause the priority feature of the MIC/LINE channels to engage, thereby causing the PRIO display field on the front of the device to

light up yellow.
1.  The VOX circuit is active (input signal level MIC/LINE 1 exceeds the set VOX threshold value).
2.  The contact between poles C and + of the terminal block connections for MIC/LINE 1 channel is closed using a mute switch/button.
3.  The chime/signal tone is played.
Further information on the channel priorities and the EMERG and PRIO indicators on the front of the amplifier can be found in the PRIORITY LEVELS

table in these operating instructions.

EMERG

Indicator for the priority function of the EMERGENCY channel. The EMERG indicator is lit yellow if priority level 1 is activated by the VOX emergency

circuit or a connected mute switch/button (contact closure). All other input channels are muted during this time. As soon as the contact closure is

opened again or the emergency signal level falls below the VOX threshold value, all channels will be unmuted, and the EMERG display will be turned

off.

STANDBY BUTTON

Briefly press the standby button to put the amplifier into standby mode and mute the stereo line output, LINE OUT. If the standby button is briefly

pressed again, the device is ready for operation again. If standby mode is activated by pressing the standby button, reactivation of the device via

the automatic standby function is not available, even if an audio signal is detected.

PRIORITY LEVELS

Priority