Rolls RA163 User Manual

RA163

DISTRIBUTION AMPLIFIER

12

MONO

1X8

RA163

MADE IN USA

www.rolls.com

34

7 8

0 dB

+20 dB

GAIN

1234

STEREO

MONO

1 2 3 4 5 6 7

LEFT

CONFIGURATION

SWITCH

STEREO

2X4

DISTRIBUTION
AMPLIFIER PRO PLUS

pwr

8 Channel Mono
4 Channel Stereo

FEATURES

• Stereo 4 channel or Mono 8 channel audio distribution

• Front panel volume controls

• Balanced inputs and outputs

SPECIFICATIONS

Input Impedance: 20 KΩ Balanced
Max Input Level: +22 dBV
Output Impedance: 100 Ω Balanced
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)

RIGHT

ROLLS CORPORATION

SALT LAKE CITY, UTAH

08/09

Quick Start Operation Guide

INTRODUCTION

Thank you for your purchase of the ROLLS RA163 Distribution Amplifi er. 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

12 34

RIGHT

GAIN

0 dB

+20 dB

pwr

DISTRIBUTION
AMPLIFIER PRO PLUS

8 Channel Mono
4 Channel Stereo

RA163

MADE IN USA

www.rolls.com

STEREO

MONO

1 2 3 4 5 6 7 8

CONFIGURATION

SWITCH

STEREO

2X4

MONO

1X8

LEFT

1234

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 confi guration of the RA163.
Follow the silk screening on the unit for proper connection.

REAR PANEL

MADE IN USA

www.rolls.com

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 SERVICING TO QUALIFIED
SERVICE PERSONNEL.

MODEL RA163

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

RISQUE DE CHOC - NE PAS ENLEVER

SERIAL NUMBER

120 VAC 50/60 Hz 15 VA

INPUTS

MONO INPUT

RIGHT

12345678

MONO

OUTPUTS

12341234

LEFT

RIGHT LEFT

STEREO

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

XLR JACK M

C11 10U

+12

S1B

456

20 dB BOOST

R8

J1

51

R12

4560

8

R11

10K

2

CH 1

DPDT

100K

R1

R3

10K

10K

8

+12

C16 120PF

R7

10K

C261UC25

3

7

U1B

6

5

1

U1A

3

120PF

C18

R2 10K

4560

6

C8

J10

102

4560

P1

7

C13

U9B

C12

51

R14

4560

J2

1 2

10U

C21

R22 51

120PF

10K

R13

4

-12

10K

1

U9A

2

3

20 dB

R5

10K

5

C6

120PF

R610K

1U

3

XLR JACK F

1 2

+12

CH 2

1 2

3

10U

C22

10U

51

R24

120PF

7

C23

4560

8

U2B

6

5

R21

10K

1

4560

4

U2A

2

3

P2

10K

4

-12
S1A

DPDT

100K

R9

120PF

C9

BOOST

123

R16

10K

R17

4560

8

120PF

+12

R15 10K

6

C7

C14

10K

R19

C241UC17

J9

XLR JACK M

10K

-12

2X4

4560

2

10K

7

U10B

5

102

3

XLR JACK M

C31 10U

51

R32

R23

1X8

MONO

3

2

1

U10A

3

R1810K

1U

8

+12

R31

4560

CH 3

SW2

SPST

DUAL

R10

10K

C15

120PF

XLR JACK F

1 2

J3

4560

1 2

3

C32

51

R34

7

C33

U3B

6

5

10K

1

U3A

2

3

P3

1

C51 10U
51

4

-12
R52

+12

CH 5

J4

10U

C41 10U

51

R42

120PF

10K

8

+12

R33

R41

4560

4

-12

10K

CH 4

J5

XLR JACK M

3

C52

51

R54

7

C53

4560

8

U5B

6

5

10K

R51

1

4560

U5A

2

3

P5

10K

10K

2

10U

4

4560

6

1

U4A

1 2

120PF

R53 10K

-12

1 2

3

C42

10U

51

R44

120PF

7

C43

U4B

R43 10K

5

4

-12

3

P4

10K

CIRCUIT

GROUND

J6

XLR JACK M

3

10U

C61

R64

R62 51

4560

8

+12

6

R61

10K

1

4560

U6A

2

CH 6

XLR JACK M

503

C18

C62

10U

51

7

U6B

5

3

P6

+12V

SW2

1 2

C63

4.7K

R4

D1 1N4001

T1

120PF

4

-12

10K

D5

C4

C19

ROLLS P/N 812

SW SPST

R7251R74

R63 10K

LDSG

POWER

503

C10

1000UF 16VC51000UF 16V

503

1N4001

503

D3 1N4001

D2 1N4001

D4

C20

+12V+12V+12V

PL1

PLUG AC MALE

J7

XLR JACK M

1 2

3

C72

C81

R71

4560

2

4560

10K

10U

51

120PF

7

C73

U7B

R73 10K

6

5

1

4

-12

U7A

3

P7

10K

C71 10U

+12

CH 7

8

-12V

5968 S 350 W

MURRAY, UT 84107

ROLLS CORPORATION

RA163 BALANCED DISTRIBUTION AMP

Title

C3

503

-12V-12V-12V

C2

503

C1

503

J8

XLR JACK M

1 2

3

10U

C82

10U

51

R84

R82 51

7

C83

4560

8

U8B

+12

6

5

R81

10K

1

4560

U8A

2

3

P8

CH 8

Rev:

Size: Document Number:

120PF

4

10K

1

1

Sheet of

RA163.SCH A

1 JULY 2009

Ba

Date:

R83 10K

-12