Rolls PA71PLUS User Manual
12 VAC/
SPEAKER
LINE/
MicroMix
MIC
PA71PLUS
VDC
OUTPUT
OUT
POWER
INPUT
MIC
LEVEL
PWR
Owners Manual
Power Amplifier
LIMITED WARRANTY
This product is warranted to the original consumer purchaser to be
free from defects in materials and workmanship under normal installation,
use and service for a period of one (1) year from the date of purchase as
shown on the purchaser’s receipt.
The obligation of Rolls Corporation under this warranty shall be
limited to repair or replacement (at our option), during the warranty period
of any part which proves defective in material or workmanship under normal installation, use and service, provided the product is returned to Rolls
Corporation, TRANSPORT ATION CHARGES PREP AID. Products returned
to us or to an authorized Service Center must be accompanied by a copy of
the purchase receipt. In the absence of such purchase receipt, the warranty
period shall be one (1) year from the date of manufacture.
This warranty shall be invalid if the product is damaged as a result
of defacement, misuse, abuse, neglect, accident, destruction or alteration of
the serial number, improper electrical voltages or currents, repair , alteration
or maintenance by any person or party other than our own service facility or
an authorized Service Center, or any use violative of instructions furnished
by us.
This one-year warranty is in lieu of all expressed warranties, obligations or liabilities. ANY IMPLIED W ARRANTIES, OBLIGATIONS, OR
LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIMITED IN DURA TION TO THE ONE
YEAR DURATION OF THIS WRITTEN LIMITED WARRANTY. Some
states do not allow limitations on how long an implied warranty lasts, so the
above limitation may not apply to you.
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF
THIS OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED,
WHATSOEVER. Some states do not allow the exclusion or limitation of
special, incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights,
and you may also have other rights which vary from state to state.
LINE
INPUT
PHANTOM
POWER
LINE
LEVEL
PA71PLUS
MicroMix Power Amplifier
• RCA Inputs
• XLR Mic Input
• Spring-loaded output
• Low noise, efficient operation
The PA71 Plus mixes an unbalanced line level
signal with a mic signal to a powered 1/4" or
speaker terminal outputs. The unit is perfect
for small speakers in small environments.
Salt Lake City, Utah
7/01
INTRODUCTION
Thank you for y our purchase of the PA71 Plus MicrMix Pow er Amplifier.
This unit mixes a stereo RCA signal with a microphone to a 1/4" line lev el
output and a powered spring loaded speaker output. The unit for powering
small speakers in small environments. The 1/4" output is specially designed to power stereo headphones.
DESCRIPTION
REAR PANEL
LINE INPUT: RCA line le vel inputs (mixed to mono)
MIC INPUT: Balanced XLR input for connection to a dynamic or condenser microphone.
LINE/POWER OUT: 1/4" TRS output for connection to another amplifier,
or a pair of standard headphones.
SPEAKER OUTPUT: Spring-loaded terminals - the red terminal is
positive and the black one is negativ e .
12V A C/VDC: F or connection to the pow er supply.
SIDE PANEL
PHANTOM PO WER: J umper pin f or connecting 12 v olts of phantom
power to the Mic Input.
FRONT PANEL
LINE LEVEL: Adjusts the le v el of signal from the Line Input to the Line/
Po wer and Speaker outputs .
MIC LEVEL: Adjusts the le v el of signal from the Line Input to the Line/
Po wer and Speaker outputs .
LINE
INPUT
PHANTOM
POWER
LINE
LEVEL
MIC
INPUT
MIC
LEVEL
LINE/
POWER
OUT
SPEAKER
OUTPUT
12 VAC/
VDC
PWR
CONNECTION / OPERA TION
Connect input sources such as CD players or cassette pla yers 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 9
Mic Input Impedance: 600 9
Phantom Pow er V oltage: 12 V
Po w er Output: 5 W atts (8 Ohms)
V oltage Gain: 40 dB
Maximum Supply Voltage: 18 VDC
THD: .05% typical
EIN: 3 mV
Efficiency: 65%
Input Sensitivity: 28 mV
Bandwidth: 20Hz - 25 kHz
Size: 4.25" x 2.375" x 1.5"
Weight: 1 lb.
SCHEMATIC
H 1 A
H 1 B
4 . 9 9 K 1 %
X L R F P C
H 1 C
H D 3
H D 3
H D 3
+V
1
2
1 2
J 2
P C R C A X 2
2
3
R 2
4 . 9 9 K 1 %
C 1
J 1
3
4 7 U
R 7
2 2 K
1
3
R 8
2 2 K
R 3
4 7 U
4 7 U
C 2
3 3 2 1 %
R 4
3 3 2 1 %
C 3
C 4
R 6
4 7 U
2 2 K
C 7
1 U
+V
R 9
2 2 K
J 5
J A P D C
R 1
C 6
R 5
4 7 0 P F
2 2 K
+V
8
6
7
U 2 B
V O L U M E
U 2 A
4
4 5 6 0
D 1
1 N 4 0 0 1
D 2
1 N 4 0 0 1
D 3
1 N 4 0 0 1
D 4
1 N 4 0 0 1
P 1
4 5 6 0
P 1 0 0 K
R 1 2
2 2 K
C 8
2 5 P F
R 1 0
2 2 K
C 1 0
R 1 1
1
2 2 K
1 U
+V
C 1 7
2 2 0 0 U F 1 6 V
+V
C 1 1
. 1
C 1 8
U 1
6
T D A 7 2 4 0 A
6
3
3
112
2
C 1 3
4 7 U
C 1 4
1 0 U
R 1 5
1 0 K
D 5
L D R R
S i z e :
C 1 2
. 2 2
1 U
R 1 3
2 . 2
7
7
5
5
4
R 1 4
4
2 . 2
SALT LAKE CITY, UT 84107
PA71 POWER AMP
D o c u m e n t n u m b e r ;
PA71.SCH A
Ba
25 MAY 2001Date:
J 4
C O N 2
C 1 6
1 0 0 0 U F
C 1 5
. 2 2
ROLLS COPRORATION
5968 SOUTH 350 WEST
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P H O N E 1 / 4
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