HeadsetUSA PAS 400 - Manual (Page 10)

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.
̈ 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)