10 freePORT PAS 400 Version 060328
1.12 Deep Discharge Cut-Off Circuit
The Deep Discharge Cut-Off Circuit is an intelligent circuit that will automatically switch off
the battery supply to the amplifier, before the battery voltage goes below the
manufacturer's recommended discharge cut-off voltage.
왘
If this occurs, switch the loudspeaker system Off (to Position 0) and immediately recharge
the battery.
1.13 Connecting Signal Sources
All inputs have at least 10 dB of headroom.
1.13.1 Input 1 and Input 2 pin connectors
Input 1 and Input 2 are combo jacks that accept balanced or unbalanced signals from either
XLR male connectors or ¼ in. phone plugs.
Input 1 and Input 2:
Balanced input signals - cable configurations:
Cables for balanced signals that will be connected to Input 1 or Input 2 should be configured
as follows:
XLR male connector:
¼ in. TRS (stereo) phone plug:
Unbalanced input signals - cable configurations:
For unbalanced input signals, the simplest solution is to use a ¼ in. mono (TS) phone plug.
Connect the "+ signal" to the Tip and the Ground (shield) to the Sleeve.
Connectors for unbalanced signals should be configured as follows (refer to previous
Warning):
PUSH
1
2
3
Pin 1
Ground
Pin 2
+ signal
Pin 3
-- signal
2
1
3
Pin 1
Ground (shield)
Pin 2
+ signal
Pin 3
-- signal
Ring
Tip
Sleeve
Tip
+ signal
Ring
-- signal
Sleeve
Ground (shield)
Connect unbalanced microphones or any other equipment that has an unbalanced
connector (e.g. ¼ in. mono phone plug) to INPUT 2 (unless INPUT 1 will ONLY be used in the
LINE position). INPUT 1 has phantom power in the MIC or AUX positions and this may cause
permanent damage to an unbalanced microphone when an unbalanced connector is used.
Warning!
XLR male connector
¼ in. TRS (stereo) phone plug
¼ in. TS (mono) phone plug
Pin 1
Ground
(shield)
Tip
+ signal
Tip
+ signal
Pin 2
+ signal
Ring
shorted to Sleeve
Pin 3
shorted to
Pin 1
Sleeve
Ground (shield)
Sleeve
Ground (shield)