INTRODUCTION
Thank you for your purchase of the ROLLS RA170 70 Volt / 70 Watt Power
Amplifier. The RA170 is a virtually indestructible single rack space amplifier
intended for the contractor and install market. It requires no transformer coupling
to drive 70 volt speakers directly. The mono unit features both RCA and 1/4”
inputs. The 70 volt speaker outputs are provided via spring-loaded terminals.
DESCRIPTION
FRONT PANEL
VOLUME
PWR
CLIP
CLIP
VOLUME: This control adjusts the output level of the RA170.
PWR: LED indicating the unit’s power status.
CLIP: These LEDs light in the event of RA170 circuit overload.
REAR PANEL
120 VAC
50/60 Hz 15 VA
MADE IN U.S.A.
70V OUTPUT
CAUTION
RISQUE DE CHOC - NE PAS ENLEVER
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MODEL RA170
SERIAL NUMBER
170-
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
SPARE
MAIN INPUTS
120 VAC 50/60 HZ 15 VA: Power Cord. Connect to a properly grounded AC
source.
70V Output: Spring loaded terminals to be connected to 70 Volt speaker connec-
tions. No special transformers are required.
SPARE: 1/4” and RCA jacks. These are not connected.
MAIN INPUTS: 1/4” and RCA jacks to be connected to line level signal to be
amplified. Note: Do not use both jacks simultaneously as both jacks are tied
directly together.
BURN WARNING!
THE FRONT PANEL OF THE RA170 IS THE HEAT DISTRIBUTION FOR THE
OUTPUT STAGE. IF THE UNIT IS OPERATED AT HIGH VOLUMES, IT MAY
GET HOT.
1
11-May-1999
Document Number:
Date: Sheet of
Ba
V+
V-
RED
BLK
V+
V-
RED
BLK
1
3
4
7
8
7
4
3
1
V+
V-
CHANNEL 1
CHANNEL 2
8
CLIP
CLIP
J2
PHO NE 1/4
J1A
RCA PC
R4
1K
C6
47U
C3
1U R A235 .1U F R A 170
R1
10K
J1B
RCA PC
J3
PHO NE 1/4
C7
1U
R8
1K
R9
1K
C10
47U
R7
10K
4
1
3
2
SW 1
SW SPST
C12
503
C13
503
C4
220P F
C8
220P F
R3
47K
R10
47K
T1
2-00-4880
D1
LDRR
P1
P 100K
P2
P 100K
D2
LDRR
R6
1K
R5
10K
D3
LDRR
R12
1K
R11
10K
R13
22K
L1
0.7uH
L2
0.7uH
1
A
HDR2
1
A
HDR2
1
A
HDR2
1
A
HDR2
1 3
2
AC
AC PLUG
C2
4700U F
C1
4700U F
C5
27P F
C9
27P F
C11
503
R2
1K
BR A 235.S C H
R A 235 O N LY
R A 170 O N LY
R A 235 O N LY
R
47K
1
3
4
7
8
U1
1
3
4
7
8
U2
C
470U
C
470U
C
470U
C
470U
IN SERIES W /OUTPUTS RA170 O NLY
LM 3875
LM 3875
C P8010
BR1
ROLLS CORPORATION
5143 South M ain Street
Salt Lake C ity, U T 84107
Title: R A170 / R A235 P O W ER AM P LIFIE R S
Size:
Rev
1
INSTALLATION
Mount the RA170 in a safe and sturdy rack. Connect the output of the signal
source to the selected input of the RA170. Connect the 70V Output terminals to
the 70 volt speakers.
Plug the AC cord into a properly grounded AC outlet.
Send signal to the RA170 and adjust the VOLUME control for a comfortable
listening level.
SPECIFICATIONS
Recommended Load: 70 Volt line (70 Watts maximum)
Frequency Response: 70Hz to 20 kHz
Equiv. Input Noise: 100 µV typical, A weighted
600 Ω input
S/N Ratio: 114 dB @ 70 Watts
Gain: 40 dB
Input Impedance: 47 k Ω
Size (W x H x D): 19" x 1.75" x 5" (48 x 4.5 x 12.7)
Weight: 5.5 lbs (2.5 kg)
SCHEMATIC
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern