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INTRODUCTION
Thank you for your purchase of the ROLLS RA63 Distribution Amplifier. This unit
will distribute six high-level balanced lines in a sound distribution system. The
screw terminals on the rear panel are for input and output, and each output may
power more than one line. The unit is intended for professional applications and
has a FR4 double sided circuit board and painted steel chassis.
FEATURES
• 6 Distribution outputs on barrier strips
• Screw driver adjustable front panel volume controls
• Balanced inputs and outputs
• Clean, quiet operation
DESCRIPTION
FRONT PANEL
PWR
+ 20 dB
0 dB
CH 1
CH 2
CH 3 CH 4 CH 5
CH 6
4 ) $ ! >
VOL 1 - 6: These screwdriver adjustable controls adjust the level of output signal
for each indicated output.
+20dB/0dB Switch: Pressing this switch in provides 20 dB of gain to the input
signal.
PWR: LED indicating the unit’s power status.
REAR PANEL
120 VAC
50/60 Hz 15 VA
MADE IN U.S.A.
MODEL RA63
SERIAL NUMBER
63-
NRTL /C
-
+
INPUT
CH 6
-
+
-
+
CH 5
CH 4
-
+
-
+
CH 3
CH 2
-
+
-
+
CH 1
12 VAC
RISQUE DE CHOC - NE PAS ENLEVER
WARNING:
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT NOT REMOVE BACK.
NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
120 VAC 50/60 HZ 15 VA: Power Cord. Connect to a properly grounded AC
source.
12 VAC: These two terminals provide 12 volts of ac current. These are available
for connection to low power accessory units.
INPUT: These three terminals, labeled + for the positive or “hot” connection, - for
the negative connection, and the ground symbol for earth ground connection are
for connection to the balanced or unbalanced input signal to be distributed.
CH6 - CH1: For each channel; the two terminals labeled + for the positive or “hot”
portion of the output signal, and the - for negative or neutral portion. The ground
signal indicates the terminal to be connected to earth ground. This terminal may
be lifted in the event of ground loops.
INSTALLATION
Install the RA63 in a standard 19” rack. The unit is intended for installations where
several zones or areas need to be controlled and a high level balanced signal is
required to drive the input lines.
SPECIFICATIONS
Input Impedance: 100 KΩ balanced
Max Input Level: +22 dBV
I/O Connectors: Screw terminal; +. -, and ground
Output Impedance: 50 Ω balanced
Max Output Level: +24 dB
Max Gain: 20 dB
S/N Ratio: >90 dB
THD: <.008%
Power: 120 VAC 50-60 Hz, 15VA
Size: 19 x 1.75 x 6.5
(48 x 4.5 x 17 cm)
Weight: 7 lbs. (3 kg)
SCHEMATIC
ROLLS CORPORATION
5968 South 350 West
Salt Lake City, UT 84107
RA63.SCH
Rev:
A
Sheet 1 of 1
Ba
+12
+12
-12
+12V
-12V
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
P O W E R
C H 1
C H 2
C H 3
C H 4
C H 5
C H 6
1 2 V A C
O U T
+ IN
-IN
C IR C U IT
G R O U N D
2 0 d B
B O O S T
R 2
5 1
C 1
C 2
1 0 U
R 1
1 0 K
2
3
1
4
U 1 A
4 5 6 0
R 3
1 0 K
6
5
7
8
U 1 B
4 5 6 0
C 3
1 2 0 P F
R 4
5 1
D 1 1 N 4 0 0 1
D 3 1 N 4 0 0 1
D 4
1 N 4 0 0 1
D 5
L D S G
4 .7 K
D 2 1 N 4 0 0 1
R 9 4 .7 K
S W 2
S W S P S T
P L 1
P L U G A C M A L E
T 1
M C I 4 0 7 4 0 2 4
R 7
1 0 K
R 5
1 0 K
6
5
7
8
U 7 B
4 5 6 0
C 6
1 2 0 P F
C 7 1 2 0 P F
R 8 10 K
R 6 1 0 K
C 8
1 0 2
2
3
1
4
4 5 6 0
R 1 2
1 0 K
R 1 3
1 0 K
1 0 0 K
C 9
1 2 0 P F
1
2
3
D P D T
2
3
1
4
U 1 A A
4 5 6 0
6
5
7
8
U 1 A B
4 5 6 0
2
3
1
4
U 1 B A
4 5 6 0
6
5
7
8
U 1 B B
4 5 6 0
2
3
1
4
U 1 C A
4 5 6 0
6
5
7
8
U 1 C B
4 5 6 0
2
3
1
4
U 1 D A
4 5 6 0
6
5
7
8
U 1 D B
4 5 6 0
2
3
1
4
U 1 E A
4 5 6 0
6
5
7
8
U 1 E B
4 5 6 0
R 2 A 5 1
R 4 A
5 1
C 3 A
1 2 0 P F
C 2 A
1 0 U
R 2 B
5 1
R 4 B
5 1
1 0 U
C 3 B
1 2 0 P F
R 1 B
1 0 K
C 3 C
1 2 0 P F
1 0 U
R 1 D
1 0 K
C 3 D
1 2 0 P F
5 1
5 1
C 3 E
1 2 0 P F
5 1
1
O U T +
4
O U T +
2
O U T -
3
5
O U T -
1
4
2
3
G N D
5
1
4
2
3
5
1
2
3
4
5
R 3 A
1 0 K
C 1 A
R 3 B
1 0 K
C 1 B
C 1 C 1 0 U
R 3 C 1 0 K
R 4 C
5 1
R 2 C
5 1
R 1 C
1 0 K
R 3 D 1 0 K
R 2 E
5 1
R 3 E
1 0 K
R 1 E
1 0 K
R 1 A
1 0 K
P 5
1 0 K
P 6
1 0 K
P 1
1 0 K
P 2
1 0 K
P 3
1 0 K
P 4
1 0 K
C 4
C 5
R 2 D
C 1 D
1 0 U
R 4 D
C 2 D
1 0 U
G N D
C 1 E
1 0 U
R 4 E
C 2 E
1 0 U
S 1 A
R 1 1
U 7 A
-1 2
R 1 0
1 0 0 0 U F 1 6 V
C 1 0
5 0 3
1 0 0 0 U F 1 6 V
Date: 31-Jul-2000
Size
Document Number:
Title: RA63 DISTRIBUTION AMPLIFIER
C2C
OUT -
OUT +
GND
OUT -
OUT +
OUT -
OUT +
1 0 U
OUT -
OUT +