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P84502 C 

Sheet 3 of 6 

 

Figure 2: 

 

POS 1 

POS 2 

POS 3 

POS 4 

SLIDE HERE FOR (0N)

SLIDE HERE FOR (OFF)

USE A SMALL SCREWDRIVER TO

CHANGE THE SWITCH POSITION.

 

 
 
 

Table 2:  Audio Input Voltage Mode Selection

 

Switch Settings (SW1) 

Audio Input Voltage Mode 

POS 1 

0.5 V RMS 

ON 

25 V RMS 

OFF 

 
 
 

Table 3:  Sound Output Level Selection

 

Switch Settings (SW1) 

Sound Output 

Level 

Relative Level 

(dB) 

POS 4 

POS 3 

POS 2 

A

1

 

+6 

(typical) 

OFF ON OFF 

B

1

 +3 

(typical)  OFF 

ON 

ON 

6

2

 0 

(Reference) OFF 

OFF 

OFF 

5 -3

(typical) OFF 

OFF 

ON 

4 -6

(typical) ON 

ON 

OFF 

3 -9

(typical) ON 

ON 

ON 

2 -12

(typical) ON 

OFF 

OFF 

1 -15

(typical) ON 

OFF 

ON 

 

NOTES: 

1.

 

These settings are not to be used in UL Listed applications

 and should be used in non-UL Listed applications only when 

the audio input level is not at the rated value – 0.5 V RMS for the 0.5-V mode and 25 V RMS for the 25-V mode – to 
provide 3- or 6-dB compensation for line losses and/or low drive levels. 

Using these settings while applying the rated audio 

input to the appliance will cause excessive distortion and increased current consumption, and it is not a recommended 
operating condition.

 

 

2.

 

This is the setting used as a reference level for the other settings in this table.

 

3.

 

These are 

typical

 values with respect to the reference level (Sound Output Level 6: 0 dB), and are included only to assist the 

user in choosing a setting during installation. 

However, use the values in Table 1, not these values, for the actual sound 

output levels. 

 

 

WARNING:  DOUBLE CHECK SWITCH (SW1) SETTINGS TO MAKE SURE THEY ARE CORRECT.  

IMPROPER SETTINGS CAN DAMAGE THE UNIT OR RESULT IN A DISTORTED OUTPUT OR A dBA SOUND 
OUTPUT LEVEL THAT IS BELOW CODE REQUIREMENTS FOR PUBLIC MODE FIRE PROTECTION, WHICH 
COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS. 

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