P83243 C
Sheet 4 of 6
Figure 4: Cascading Amplifiers
Note
: Use shielded cable for all interconnections.
OPERATION:
WARNING: DO NOT OPEN COVER! NO USER SERVICEABLE INTERNAL COMPONENTS! REFER TO QUALIFIED SERVICE TECHNICIAN. IF
UNIT IS OPENED, WARRANTY IS VOIDED.
Figure 5: PA-250 or PA-500 Front Panel
11. POWER
INDICATOR:
Green LED indicator illuminates when AC power is applied to the amplifier.
12. VOLUME
CONTROL:
Adjusts the total output level of the amplifier.
13. OUTPUT PEAK INDICATOR:
The indicator, as the amplifier output is increased, illuminates within 2dB of full rated output.
Figure 6: PA-250 or PA-500 Rear Panel
14. POWER ON/OFF SWITCH AND RECEPTACLE:
The amplifier is designed to operate from a line voltage of 115VAC at 50/60Hz. The IEC 320 receptacle has a male input to connect a grounded
line cord and female output for attaching a switched external auxiliary load. The external auxiliary load is not to exceed 3 Amps at 115VAC.
15. AUDIO OUT OUTPUTS:
The audio output is available at the rated output of 250 Watts (PA-250) or 500 Watts (PA-500) for an 8 Ohm load, for a 25V, 70.7V or 100V. The
GND and COM terminals of the AUDIO OUT terminal block are chassis ground. The shield of the audio shielded cable is to be terminated to this
GND. Connect (2) output wires from the speaker load, to the COM screw terminal and the selected constant voltage terminal, (i.e. 25V, 70.7V or
100V). The constant voltage distribution method facilitates the use of multiple speakers in parallel with a single amplifier.
Note:
Each speaker
