Rolls RA163 User manual

RA163
DISTRIBUTION AMPLIFIER
Quick Start Operation Guide
ROLLS CORPORATION
SALT LAKE CITY, UTAH
08/09
1 2 3 4 5 6 7
1234 12
MONO
STEREO LEFT RIGHT
MADE IN USA
www.rolls.com
1X8
2X4
STEREO MONO
CONFIGURATION
SWITCH
pwr
7 8
34
GAIN
0 dB
+20 dB
8 Channel Mono
4 Channel Stereo
DISTRIBUTION
AMPLIFIER PRO PLUS
RA163
FEATURES
• Stereo 4 channel or Mono 8 channel audio distribution
• Front panel volume controls
• Balanced inputs and outputs
Input Impedance: 20 KΩBalanced
Max Input Level: +22 dBV
Output Impedance: 100 ΩBalanced
Max Output Level: +24 dB
Max Gain: 20 dB
S/N Ratio: >90 dB
Frequency Response: 10 Hz - 40 kHz, +/- 1 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)
SPECIFICATIONS

INTRODUCTION
Thank you for your purchase of the ROLLS RA163 Distribution Amplifier. This
unit will distribute a mono signal to eight outputs, or a stereo signal to four right
and four left outputs. The outputs are designed to drive high-level balanced lines
in a sound distribution system.
NOTE: THIS MANUAL ASSUMES THE USER HAS A BASIC WORKING
KNOWLEDGE OF AUDIO ELECTRONICS, BALANCED AND UNBALANCED
CONNECTIONS, AND PROPER SIGNAL LEVEL SETTING.
DESCRIPTION
FRONT PANEL
pwr
1 2 3 4 5 6 7 8
1234 12 34
GAIN
0 dB
+20 dB
MONO
STEREO
8 Channel Mono
4 Channel Stereo
DISTRIBUTION
AMPLIFIER PRO PLUS
LEFT RIGHT
RA163
MADE IN USA
www.rolls.com
1X8
2X4
STEREO MONO
CONFIGURATION
SWITCH
Mono 1 - 8 / Stereo 1 - 4: These volume controls vary the level of signal for each
indicated output.
+20dB/0dB Gain switch: Depressing this switch provides 20 dB of gain to the
input signal.
pwr: LED indicating the unit’s power status.
STEREO/MONO CONFIGURATION
Use the 2X4 - 1X8 switch to change the stereo/mono configuration of the RA163.
Follow the silk screening on the unit for proper connection.
REAR PANEL
OUTPUTS
SERIAL NUMBER
RISQUE DE CHOC - NE PAS ENLEVER
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MODEL RA163
12341234 STEREO
RIGHT LEFT
12345678 MONO
MADE IN USA
www.rolls.com
120 VAC 50/60 Hz 15 VA
WARNING: DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. TO
REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER. NO
USER SERVICEABLE PARTS INSIDE. REFER SERVICINGTO QUALIFIED
SERVICE PERSONNEL.
INPUTS
MONO INPUT
RIGHT LEFT
120 VAC 50/60 HZ 15 VA: IEC Power Connector - Connect to the power cord,
and to a properly grounded AC source.
INPUTS Right/Mono and Left: Balanced XLR jacks.
MONO 1 - 8, STEREO 1 - 4: Balanced XLR output jacks.
________________________________________________________________
INSTALLATION
Install the RA163 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.
SCHEMATIC
1
ROLLS CORPORATION
5968 S 350 W
MURRAY, UT 84107
1
RA163.SCH A
1 JULY 2009
Title Size: Document Number:
Date:
Rev:
Sheet of
RA163 BALANCED DISTRIBUTION AMP
Ba
+12
+12
-12
-12
+12V
-12V
+12
-12
+12
-12
+12
-12
+12
-12
+12
-12
POWER
CH 1
CH 2 CH 3 CH 4
CH 7 CH 8
20 dB BOOST
R12 51 C11 10U
C12
10U
R11
10K
2 3
1
4
U1A
4560
R13 10K
6 5
7
8
U1B
4560
C13
120PF
R1451
D1 1N4001
D3 1N4001
D4 1N4001
D5 LDSG
R4 4.7K
C10
503
D2 1N4001
SW2
SW SPST
PL1
PLUG AC MALE
T1
ROLLS P/N 812
R7
10K
R5
10K
6 5
7
8
U9B
4560
C6
120PF
C16 120PF R8
10K
R610K
C8
102
2 3
1
4
U9A
4560
R2 10K
R3
10K R1 100K
C18 120PF
4
5
6
S1B
DPDT
2 3
1
4
U2A
4560
6 5
7
8
U2B
4560
2 3
1
4
U3A
4560
6 5
7
8
U3B
4560
2 3
1
4
U4A
4560
6 5
7
8
U4B
4560
2 3
1
4
U7A
4560
6 5
7
8
U7B
4560
2 3
1
4
U8A
4560
6 5
7
8
U8B
4560
R22 51
R24
51
C23
120PF
C22
10U
R32 51 R34 51 C32
10U
C33
120PF
R31
10K
C43
120PF
C42
10U
R71
10K
C73
120PF
R72 51 R74
51 C72
10U
C83
120PF
R84
51 C82
10U
R23
10K
C21
10U
R33 10K
C31 10U
C41 10U
R43 10K
R4451
R42 51
R41 10K
R73 10K
C71 10U
R82 51
C81
10U
R83 10K
R81 10K
R21 10K
P7
10K
P8
10K
P1
10K
P2
10K
P3
10K
P4 10K
C4 1000UF 16V C5 1000UF 16V
+12
-12
+12
-12
CH 5 CH 6
2 3
1
4
U5A
4560
6 5
7
8
U5B
4560
2 3
1
4
U6A
4560
6 5
7
8
U6B
4560
R51
10K
C53
120PF
R52 51
R54
51 C52
10U
C63
120PF
R64
51 C62
10U
R53 10K
C51 10U
R62 51 C61
10U
R63 10K
R61 10K
P5
10K
P6
10K
+12
-12
CIRCUIT GROUND
20 dB BOOST
R19
10K
R10
10K
6 5
7
8
U10B
4560
C15
120PF
C7
120PF
R15 10K
R1810K
C14
102
2 3
1
4
U10A
4560
R16
10K
R17
10K R9
100K
C9 120PF
1
2
3
S1A
DPDT
1X8
2X4
C2 503
C3 503
C19
503
C20
503
C1 503
C18 503
+12V+12V+12V
-12V-12V-12V
MONO
DUAL
1 2
3
J10 XLR JACK F
1 2
3
J9 XLR JACK F
3
1
2
SW2 SPST
1 2
3
J5 XLR JACK M
1 2
3
J6 XLR JACK M
1 2
3
J7 XLR JACK M
1 2
3
J8 XLR JACK M
1 2
3
J1
XLR JACK M
1 2
3
J2
XLR JACK M
1 2
3
J3
XLR JACK M
1 2
3
J4
XLR JACK M
C26 1U C25 1U
C24 1U C17 1U