Rolls PA71 Dépliant

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PA71.SCH
A
25 MAY 2001
Date:
Rev:
Sheet 1 of
PA71 POWER AMP
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ROLLS COPRORATION
5968 SOUTH 350 WEST
SALT LAKE CITY, UT  84107
S i z e :
D o c u m e n t   n u m b e r ;
2 2 0 0 U F   1 6 V
INTRODUCTION
Thank you for your purchase of the PA71 MicrMix Power Amplifi er. This 
unit mixes a stereo RCA signal with a microphone to a 1/4" line level 
output and a powered spring loaded speaker output. The unit for power-
ing small speakers in small environments. 
DESCRIPTION
REAR PANEL
LINE INPUT: RCA line level inputs (mixed to mono)
MIC INPUT: Balanced XLR input for connection to a dynamic or con-
denser microphone.
LINE/POWER OUT: 1/4" TS output. 
SPEAKER OUTPUT: Spring-loaded output terminals - the red terminal is 
positive and the black one is negative.
12VAC/VDC: For connection to the power supply. 
SIDE PANEL
PHANTOM POWER: Jumper pin for connecting 12 volts of phantom 
power to the Mic Input.
FRONT PANEL
LINE LEVEL: Adjusts the level of signal from the Line Input to the Line/
Power and Speaker outputs.
MIC LEVEL: Adjusts the level of signal from the Line Input to the Line/
Power and Speaker outputs.
CONNECTION / OPERATION
Connect input sources such as CD players or cassette players to the 
RCA inputs, connect a microphone to the balanced XLR Mic Input. If the 
microphone is a condenser type, move the Phantom Power jumper to 
connect the indicated pins.
WARNING: DO NOT GROUND THE SPEAKER OUTPUT 
TERMINALS. THE SPEAKER TERMINALS ARE NOT AT 
GROUND POTENTIAL.
SPECIFICATIONS
Line Input Impedance:   
47K Ohms
Mic Input Impedance:   
600 Ohms
Phantom Power Voltage: 
 
12 V
Power Output:   
 
5 Watts (8 Ohms)
Voltage 
Gain: 
  40 
dB
Maximum Supply Voltage: 
18 VDC
THD: 
   .05% 
typical
EIN: 
   3 
mV
Effi 
ciency: 
  65%
Input Sensitivity: 
 
28 mV
Bandwidth: 
 
 
20Hz - 25 kHz
Size:   
 
 
4.25" x 2.375" x 1.5"
Weight: 
   1 
lb.
SCHEMATIC
MIC
INPUT
LINE
INPUT
LINE/
POWER
OUT
SPEAKER
OUTPUT
12 VAC/
VDC
PWR
LINE
LEVEL
MIC
LEVEL
PHANTOM
POWER
MADE IN USA
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