1.12 Deep Discharge Cut-Off Circuit

PUSH

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3

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:

Pin 1

Ground

Pin 2

+ signal

Pin 3

-- signal

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:

1

Pin 1

Ground (shield)

2

+ signal

 

Pin 2

 

Pin 3

-- signal

 

3

 

¼ in. TRS (stereo) phone plug:

 

 

 

 

 

 

 

 

 

 

 

 

Tip

+ signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

 

 

eve

 

Ring

-- signal

 

Tip

 

le

 

Sleeve

Ground (shield)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ring

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.

Warning!

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.

 

 

 

 

 

 

 

Connectors for unbalanced signals should be configured as follows (refer to previous

 

 

Warning):

 

 

 

 

 

 

 

 

 

 

 

 

XLR male connector

¼ in. TRS (stereo) phone plug

¼ in. TS (mono) phone plug

 

 

 

 

 

 

 

 

 

 

Pin 1

Ground

Tip

+ signal

Tip

+ signal

 

 

 

(shield)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin 2

+ signal

Ring

shorted to Sleeve

 

 

 

 

 

 

 

 

 

 

 

 

Pin 3

shorted to

Sleeve

Ground (shield)

Sleeve

Ground (shield)

 

 

 

Pin 1

 

 

 

 

 

 

 

 

 

 

 

 

10 freePORT PAS 400 Version 060328

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HeadsetUSA PAS 400 manual Deep Discharge Cut-Off Circuit, Connecting Signal Sources