Roland Stereo Amplifier SRA 200E User Guide

Before using this unit, carefully read the sections entitled: “IMPORTANT SAFETY INSTRUCTIONS” (p. 2),  
“USING THE UNIT SAFELY” (p. 3), and “IMPORTANT NOTES” (p. 4). These sections provide important infor-  
mation concerning the proper operation of the unit. Additionally, in order to feel assured that you have gained a  
good grasp of every feature provided by your new unit, this manual should be read in its entirety. The manual  
should be saved and kept on hand as a convenient reference.  
Ma in Fe a tu re s  
• Lightweight, Compact, and Energy-Efficient  
Employing the latest developments in high-efficiency amplifier technology, the SRA-200E packs a powerful 100 watts per channel (at 8  
ohms); yet it weighs a mere 5.0 kilograms, consumes only half the current, and generates just one-third the heat of previous power  
amps (in actual operation, compared with previous Roland products). With its compact design, this amp takes up only 1U (1.75-inch  
EIA standard rack space), and is only 360 mm deep.  
• Packed with Features  
The SRA-200E features three types of input connectors: XLR-3-31 connectors, standard phone TRS jacks, and screw type terminals.  
All inputs are balanced. With the Input Level switch, input sensitivity can be switched between +4 dBm and -10 dBm, flexibility that  
ensures compatibility with a variety of systems. The SRA-200E also features binding post output terminals which can accept either  
banana plugs or wide-gauge speaker cables.  
• Protection Circuits for Added Reliability  
The SRA-200 features a variety of protection circuits, including the PC Limiter Circuit that guards against shorting in the output, the  
Thermal Protection Circuit, the speaker-saving DC Detection Circuit, the Muting Circuit that cuts the "shock noise" that occurs when  
the power is switched on, all to ensure dependable operation.  
• The indicators let you know about signal conditions.  
With the LEVEL indicator and PROTECTION indicator, you can check to be sure of the amp's operating conditions.  
• Built-In Limiter  
The SRA-200 features an internal Limiter Circuit. This provide protection against unpleasant sound and damage to speakers resulting  
from clipping in the amp.  
New ECOS High-Efficiency Amplifier Technology  
ECOS (Efficiency Control Operation System) is a new high-efficiency amplifier technology developed by Roland. With this technology,  
amplifier power consumption is only 1/2 that of previous amps, while generating only 1/3 of the heat, all with no sacrifice in sound quali-  
ty. As a result, the heat dissipation and power sections are smaller, making the amplifier lighter and more compact than previous mod-  
els.  
Contents  
Using The Unit Safely.........................................................3  
Important Notes ...................................................................4  
Names and Functions..........................................................5  
Front Panel .......................................................................5  
Rear Panel.........................................................................6  
Connecting Other Devices .................................................8  
Stereo Connection ...........................................................8  
BTL Connection ...............................................................8  
Parallel Connection .........................................................9  
Precautions When Connecting and Turning on  
the Power........................................................................10  
Tips about Connection .................................................11  
About the Protection Circuits..........................................12  
About Rack Mounting ......................................................13  
Attaching the Rubber Feet ...............................................13  
Troubleshooting.................................................................14  
Main Specifications...........................................................15  
Dimensions .........................................................................16  
Index.....................................................................................17  
Copyright 1998 ROLAND CORPORATION  
All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.  
01677290 ‘02-6-A2-51K  
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The  
symbol alerts the user to important instructions  
Used for instructions intended to alert  
the user to the risk of death or severe  
injury should the unit be used  
improperly.  
or warnings.The specific meaning of the symbol is  
determined by the design contained within the  
triangle. In the case of the symbol at left, it is used for  
general cautions, warnings, or alerts to danger.  
Used for instructions intended to alert  
the user to the risk of injury or material  
damage should the unit be used  
improperly.  
The  
symbol alerts the user to items that must never  
be carried out (are forbidden). The specific thing that  
must not be done is indicated by the design contained  
within the circle. In the case of the symbol at left, it  
means that the unit must never be disassembled.  
* Material damage refers to damage or  
other adverse effects caused with  
respect to the home and all its  
furnishings, as well to domestic  
animals or pets.  
The symbol alerts the user to things that must be  
carried out. The specific thing that must be done is  
indicated by the design contained within the circle. In  
the case of the symbol at left, it means that the power-  
cord plug must be unplugged from the outlet.  
• Before u sing this u nit, m ake su re to read the  
instructions below, and the Owner's Manual.  
.........................................................................................................  
• Before using the unit in a foreign country, consult  
with your retailer, the nearest Roland Service Center,  
or an authorized Roland distributor, as listed on the  
"Information" page.  
• Do not open or perform any internal modifications  
on the unit.  
.........................................................................................................  
• When using the unit with a rack or stand recom-  
mended by Roland, the rack or stand must be careful-  
ly placed so it is level and sure to remain stable. If not  
using a rack or stand, you still need to make sure that  
any location you choose for placing the unit provides  
a level surface that will properly support the unit,  
and keep it from wobbling.  
• Always grasp only the plug on the power-supply  
cord when plugging into, or unplugging from an out-  
let.  
.........................................................................................................  
• Try to prevent cords and cables from becoming  
entangled. Also, all cords and cables should be placed  
so they are out of the reach of children.  
.........................................................................................................  
.........................................................................................................  
• Avoid damaging the power cord. Do not bend it  
excessively, step on it, place heavy objects on it, etc. A  
damaged cord can easily become a shock or fire haz-  
ard. Never use a power cord after it has been dam-  
aged.  
Never climb on top of, nor place heavy objects on  
the unit.  
.........................................................................................................  
Never handle the power cord or its plug with wet  
hands when plugging into, or unplugging from, an  
outlet.  
.........................................................................................................  
• In households with small children, an adult should  
provide supervision until the child is capable of fol-  
lowing all the rules essential for the safe operation of  
the unit.  
.........................................................................................................  
• Before moving the unit, disconnect the power plug  
from the outlet, and pull out all cords from external  
devices.  
.........................................................................................................  
• Protect the unit from strong impact.  
(Do not drop it!)  
.........................................................................................................  
.........................................................................................................  
• Before cleaning the unit, turn off the power and  
unplug the power cord from the outlet (p. 5).  
• Do not force the unit's power-supply cord to share  
an ou tlet w ith an u nreasonable nu m ber of other  
devices. Be especially careful when using extension  
cords—the total power used by all devices you have  
connected to the extension cord's outlet must never  
exceed the pow er rating (w atts/ amperes) for the  
extension cord. Excessive loads can cause the insula-  
tion on the cord to heat up and eventually melt  
through.  
.........................................................................................................  
• Whenever you suspect the possibility of lightning  
in your area, pull the plug on the power cord out of  
the outlet.  
.........................................................................................................  
• When you mount the unit onto a rack, please be  
careful so that you won't pinch your fingers.  
.........................................................................................................  
.........................................................................................................  
3
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Im p o rta n t N o te s  
In addition to the items listed under “IMPORTANT SAFETY INSTRUCTIONS” and “USING THE UNIT SAFELY”  
on pages 2 and 3, please read and observe the following:  
Po w e r Su p p ly  
• Do not use this unit on the same power circuit with any device that will generate line noise (such as an electric  
motor or variable lighting system).  
• Before connecting this unit to other devices, turn off the power to all units. This will help prevent malfunctions  
and/ or damage to speakers or other devices.  
Pla ce m e n t  
• Using the unit near power amplifiers (or other equipment containing large power transformers) may induce hum.  
To alleviate the problem, change the orientation of this unit; or move it farther away from the source of interference.  
• This device may interfere with radio and television reception. Do not use this device in the vicinity of such  
receivers.  
• To avoid possible breakdown, do not use the unit in a wet area, such as an area exposed to rain or other moisture.  
Ma in te n a n ce  
• For everyday cleaning wipe the unit with a soft, dry cloth or one that has been slightly dampened with water. To  
remove stubborn dirt, use a cloth impregnated with a mild, non-abrasive detergent. Afterwards, be sure to wipe the  
unit thoroughly with a soft, dry cloth.  
Never use benzine, thinners, alcohol or solvents of any kind, to avoid the possibility of discoloration and/ or  
deformation.  
Ad d itio n a l Pre ca u tio n s  
• Use a reasonable amount of care when using the units buttons, sliders, or other controls; and when using its jacks  
and connectors. Rough handling can lead to malfunctions.  
• When connecting / disconnecting all cables, grasp the connector itself—never pull on the cable. This way you will  
avoid causing shorts, or damage to the cables internal elements.  
• A small amount of heat will radiate from the unit during normal operation.  
• To avoid disturbing your neighbors, try to keep the units volume at reasonable levels (especially when it is late at  
night).  
• When you need to transport the unit, package it in the box (including padding) that it came in, if possible.  
Otherwise, you will need to use equivalent packaging materials.  
• Use a cable from Roland to make the connection. If using some other make of connection cable, please note the  
following precautions.  
• Some connection cables contain resistors. Do not use cables that incorporate resistors for connecting to this  
unit. The use of such cables can cause the sound level to be extremely low, or impossible to hear. For information  
on cable specifications, contact the manufacturer of the cable.  
4
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N a m e s a n d Fu n ctio n s  
Fro n t Pa n e l  
1
2 3  
4 5  
1. Attenuator  
This adjusts the level of what is output to the speakers.  
Adjust for the most suitable volume according to the input level of the connected device.  
* When set to BTL mode, volume is adjusted with the Channel A attenuator. (BTL Connection p. 8)  
2. LEVEL Indicators  
Output is indicated by these 5-step LED level indicators.  
The Limiter Circuit is activated when the CLIP indicator lights. The CLIP indicator lighting too frequently means  
that the output levels are too high; adjust the attenuator to attain the proper output level. (About the Limiter p.  
10)  
3. PROTECTION Indicator  
This lights when the protection circuits are in operation.  
When this indicator is lit, sound from the speakers is cut. Stop operation of the equipment, and immediately check  
the operating conditions. (About the Protection Circuits p. 12)  
4. POWER Indicator  
This is lit when the power is on.  
5. POWER Switch  
This switches the power on and off.  
* When turning the power on or off, first turn the attenuator (1) completely counterclockwise (-infinity) before  
pressing the switch.  
* This unit is equipped with a protection circuit. A brief interval (a few seconds) after power up is required before  
the unit will operate normally. (About the Protection Circuits p. 12)  
5
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Re a r Pa n e l  
5 4  
1
3
7
6
2
INPUT  
OUTPUT  
INPUT  
1. INPUT Connector (XLR-3-31 Type)  
* The pin assignment for the XLR type connectors is as shown below. Before making any connections, make sure  
that this pin assignment is compatible with that of all your other devices.  
2
1
1:GND  
2:HOT  
3:COLD  
3
2. INPUT Jack (TRS Standard Phone Type)  
Connect using quarter-inch TRS phone type when input is balanced, and connect with quarter-inch phone type  
when the input is unbalanced.  
* Check the pin assignments of other devices before connecting.  
GND(SLEEVE)  
GND(SLEEVE)  
HOT(TIP)  
HOT(TIP)  
COLD(RING)  
Quarter-inch TRS Phone Type  
(Balanced)  
Quarter-inch Phone Type  
(Unbalanced)  
3. INPUT Terminals  
* Check the pin assignments of other devices before connecting. When making connections, be careful to avoid los-  
ing the screws that you remove.  
GND  
HOT  
COLD  
COLD  
HOT GND  
6
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4. INPUT LEVEL Switch  
This switches the input sensitivity (+4 dBm/ -10 dBm).  
Select the setting appropriate for use with your system.  
5. MODE Switch  
Switches the unit between the STEREO and BTL modes.  
Select the mode that is appropriate for your configuration ( p. 8, 9).  
STEREO : Channel A and Channel B work independently of each other. In this mode, the amp functions as a stan-  
dard power amplifier.  
BTL  
: Channel A and Channel B are bridged internally, creating a 300 watt (8 ohms) mono power amplifier.  
6. Speaker Connection Terminals (Binding Posts)  
These are terminals for connecting speakers.  
* To avoid the risk of electric shock, do not touch the terminals while the amp is on.  
Please refer to "Precautions When Connecting and Switching on the Power". ( p. 10)  
7. Cooling Fan/Air Vent  
This comprises a forced-air cooling fan in combination with air vents. Cooler air is drawn in through the intakes in  
the top and bottom panels, and the air heated by the amp is expelled through the vents.  
The fan is activated whenever the temperature of the interior heat sinks exceeds 60 ˚C, and the rotation speed of the  
fan changes smoothly in response to any change in the temperature.  
* To ensure adequate cooling capacity, position the amp so that both intake and exhaust vents remain unblocked.  
(About Rack Mounting p. 13)  
7
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Co n n e ctin g O th e r De vice s  
Please refer to p. 10 and p. 11.  
Ste re o Co n n e ctio n  
BTL Co n n e ctio n  
Channel A and Channel B may operate independently.  
In this mode, the SRA-200E functions as a stereo power  
amp, with 100 watts per channel (at 8 ohms).  
If you need greater volume, you can connect a single  
speaker to each SRA-200E. In this mode, Channel A  
and Channel B are bridged internally by means of a  
BTL connection. BTL stands for Balanced Transformer-  
Less, and is a method in which the phase of one chan-  
nel is inverted, and the output taken from the + jack of  
both channels. This provides approximately double the  
output voltage modulation, and in the case of the SRA-  
200E allows it to function as a 300 W (8 ohm) monaural  
power amp.  
One SRA-200E connected to two speakers  
Signal  
Signal  
(Right Channel)  
(Left Channel)  
Left  
Speaker  
Right  
Speaker  
One SRA-200E connected to one speakers  
Signal  
MODE switch: Set the MODE switch on the rear  
panel to "STEREO."  
Connecting input: Connect the input carrying the left  
signal to the Channel A INPUT connector, and the  
input carrying the right signal to the Channel B INPUT  
connector.  
Speaker  
Speaker connections: Connect the speaker for the left  
channel to the Channel A speaker terminal, and the  
speaker for the right channel to the Channel B speaker  
terminal.  
MODE switch: Set the MODE switch on the rear  
panel to "BTL."  
Connecting input: Connect the input carrying the  
signal to the Channel A INPUT connector.  
* Use speaker systems with a total impedance of 4  
ohms or higher for each channel.  
Speaker connections: Connect the sp eakers to the  
red Channel A and Channel B speaker terminals (BTL).  
In this case, the polarity of Channel A is "+".  
* Use speaker systems with a total impedance of 8  
ohms or higher for each channel.  
* Take care not to connect speakers to the terminals  
with the polarity reversed.  
Adjusting the volume: Adjust the volume of the left  
channel with the Channel A attenuator and the volume  
of the right channel with the Channel B attenuator.  
* Take care not to connect speakers to the terminals  
with the polarity reversed.  
Ad ju sting volu m e: Ad ju st the volu m e w ith the  
Channel A attenuator.  
* The Channel B attenuator does not function in BTL  
mode.  
8
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to be connected (mixer, preamps, and so on) to make  
sure that the outputs of the mixer and other devices  
do not overload the system.  
Pa ra lle l Co n n e ctio n  
Contacts for each of the SRA-200E's three types of  
input connectors (XLR-3-31, TRS standard phone, and  
screw type) are wired in parallel internally, so signals  
can be output unchanged and then input again at a  
separate device's connector, allowing connection of a  
multiple number of power amps.  
The input impedance of a single SRA-200E itself is 10  
kiloohms (with balanced or unbalanced input).  
The total input impedance of "n" number of SRA-  
200Es connected in parallel is "10/ n" kiloohms (with  
balanced or unbalanced input).  
* With parallel connections, the total impedance is  
reduced. Check the output impedance of each device  
Stereo Connection: Multiple setups, with each  
SRA-200E connected to two speakers  
BTL Connection: Multiple setups, with each  
SRA-200E connected to one speaker  
Sequence for turning the power on:  
Signal  
(Right Channel)  
Signal  
(Left Channel)  
Signal  
Left  
Speaker  
Right  
Speaker  
Speaker  
Speaker  
Speaker  
Left  
Speaker  
Right  
Speaker  
Sequence for turning the power off:  
9
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Pre ca u tio n s W h e n Co n n e ctin g a n d Tu rn in g o n th e Po w e r  
To prevent malfunction and/ or damage to speakers or other devices, always turn down the volume, and turn off  
the power on all devices before making any connections.  
Do not connect anything other than speakers to these terminals.  
Connect speakers rated at 4 ohms or higher; or if using the BTL connection (bridging), 8 ohms or higher.  
Using an unbalanced standard phone plug and XLR-3-31 type connector at the same time shorts the XLR-3-31  
connector's pin 1 (GROUND) and pin 3 (COLD), which may cause problems, including noise and the inability to get  
sufficient volume. Use caution when connecting with unbalanced standard phone plugs.  
1
1
2
2
3
T
3
T
HOT  
HOT  
COLD  
GND  
COLD  
GND  
R
R
S
S
Quarter-inch Phone Type (Unbalanced)  
Quarter-inch TRS Phone Type (Balanced)  
Although the SRA-200E is protected from damage by the PC Limiter Circuits, take care not to connect speakers  
rated at less than 4 ohms impedance or to allow shorting in the speaker cables.  
(PC Limiter Circuits see below)  
Once the connections have been completed, turn on power to your various devices in the order specified. By turn-  
ing on devices in the wrong order, you risk causing malfunction and/ or damage to speakers and other devices.  
(reverse the order when shutting off the equipment)  
Connected Devices SRA-200E  
To avoid the risk of electric shock, do not touch the terminals while the amp is on.  
<About the PC Limiter Circuits>  
If the speaker cable's + and - wires are shorted, or if speakers rated at less than 4 ohms impedance are connected,  
the PC Limiter Circuit is activated in order to protect the speakers, and the sound may be cut off or distorted.  
<About the Limiter>  
The SRA-200E also features a Limiter Circuit. This monitors the power amp's output signal and protects against  
noise and damage to speakers resulting from sudden peaks in the input.  
1 0  
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Tip s a b o u t Co n n e ctio n  
Connections can be made using banana plugs and large-diameter cables. However, be sure only to connect cables  
specifically made for use with speakers. Use of cables (such as shielded cables) that accumulate significant static  
electricity can cause power amp overload, overheating, and damage to the equipment; do not use such cables.  
Contacts for the INPUT connectors are wired in parallel. This makes it convenient when a parallel connection is  
desired. (Parallel Connection p. 9)  
1
2
3
T
HOT  
COLD  
GND  
R
S
HOT  
COLD  
GND  
* However, the amp features no mixing functions. Regardless of the input arrangement used, do not connect inputs  
to different connectors on the same channel simultaneously. Doing so may result in damage to the SRA-200E and  
other connected devices.  
Input  
Input  
1 1  
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Ab o u t th e Pro te ctio n Circu its  
The SRA-200E features special circuitry to protect the amp and any connected devices. Whenever this is activated,  
the PROTECTION indicator lights, and sound is cut off from the speakers. Stop operation of the equipment, and  
immediately check to find the cause of the problem.  
1. Thermal Protection Circuit—Protects the Amp  
Speaker output is cut if the temperature of the amp's heat sink exceeds 100˚C. Stop operating the equipment for a  
short while to allow the heat to dissipate sufficiently. In addition, check the setup of the SRA-200E and rack, if rack-  
mounted, and take steps to allow enough circulation to carry away the heat generated by the amp.  
(For more information on rack-mounting the SRA-200E, see "Notes on Heat Dissipation" p. 13).  
* The unit automatically restarts when the temperature of the heat sink falls. However, if the overheating protection  
circuit is activated again, check to make sure that the operating environment and the speakers connected to the  
amp output connectors conform to the SRA-200 specifications (4 ohms in stereo, 8 ohms with the BTL connection).  
2. DC Detection Circuit—Protects the Speakers  
Whenever DC (direct current) is generated in the output sent to the speakers, the output is cut off, protecting the  
speakers.  
The SRA-200E restarts a few seconds after generation of direct current in the output ceases.  
3. Muting Circuit—Protects the Speakers  
When the power is switched on, output to the speakers is cut for a few seconds, thereby protecting the speakers  
from the sudden noise that occurs when the power is switched on.  
1 2  
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Atta ch in g th e Ru b b e r Fe e t  
(In clu d e d )  
Ab o u t Ra ck Mo u n tin g  
(N o te s o n He a t Dissip a tio n )  
Th e SRA-200E u ses  
a
com bin ed sim p le air-  
Attach the rubber feet included with the SRA-200E as  
needed when not mounting the amp in a rack or other  
fixture. Peel the covering from the double-sided adhe-  
sive tape, and place on the rubber feet as shown in the  
figure below.  
cooled/ forced-air cooling system.  
When the forced-air cooling fan is activated, cooler air  
from outside the amp is drawn in through the intakes  
in the top and bottom panels, and the air heated by the  
amp's interior is expelled through the vent (see figure  
below).  
Bottom Chassis  
To ensure efficient cooling when rack mounting the  
SRA-200E or in similar setups, be sure to note the fol-  
lowing points.  
Set up the unit in a site with good air circulation. In  
particular, make sure that there is nothing impeding  
the air flow that needs to reach the rear panel's air vent.  
Never mount the SRA-200E in enclosed-type racks.  
When the heated air inside the rack cannot be expelled,  
it is recirculated through the intakes, preventing effi-  
cient cooling of the amp.  
When mounting multiple amps, make sure that there  
is sufficient ventilation (especially within the rack), and  
also make sure that the exhaust air does not get recir-  
culated back to the intakes. If there is no way to keep  
the rear panel of the amp away from the rack, then  
make sure the rack has an opening or fan installed for  
ventilation of the heated air that builds up during oper-  
ation.  
Provide at least 1U (1.75 inches) of open rack space  
between each three SRA-200Es that you have mounted.  
When stored in portable racks, remove the front and  
rear covers of the case before operation, so that the  
front and rear panels of the SRA-200E are not obstruct-  
ed.  
If the Thermal Protection Circuit is activated, and the  
PROTECTION indicator lights, you must then take  
measures to improve heat dissipation. Reconsider the  
type of installation and rack environment you are pro-  
viding for the SRA-200E, referring to the points listed  
above.  
When mounting the SRA-200E in a rack or other fix-  
ture, exercise due caution so as to prevent fingers being  
caught or pinched between the amp and the rack.  
1 3  
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Tro u b le sh o o tin g  
There is no sound  
Check to make sure the attenuators are not rotated too far counterclockwise.  
Check to make sure the speaker cables are not shorted and that the speaker impedance is not less than 4 ohms. If  
the speaker cable's + and - wires are shorted, or if speakers of less than 4 ohms impedance are connected, the PC  
Limiter Circuit is activated in order to protect the speakers, and the sound may be cut off or distorted.  
(PC Limiter Circuit p. 10)  
The Thermal Protection Circuit cuts off the sound if the internal power amp overheats. Stop operation of the  
equipment for a while to allow the heat to dissipate sufficiently. (About Rack Mounting p. 13)  
* The unit automatically restarts when the temperature of the heat sink falls. However, if the overheating protection  
circuit is activated again, check to make sure that the operating environment and the speakers connected to the  
amp output connectors conform to the SRA-200 specifications (4 ohms in stereo, 8 ohms with the BTL connection).  
(Thermal Protection Circuit p. 12)  
When DC (direct current) is generated in the output sent to the speakers, the DC Detection Circuit cuts off the  
sound to protect the speakers. The SRA-200E restarts a few seconds after generation of direct current in the output  
ceases.  
(DC Detection Circuit p. 12)  
Noise is coming from the amp itself  
Whenever the temperature of the interior heat sinks exceeds 60˚C, the cooling fan is activated. Although this is  
audible, it does not indicate a malfunction.  
(About the Cooling Fan/ Air Vents p. 13)  
Stereo image incorrect (minimal low end, extreme left-right spread, etc.)  
Is the MODE switch on the rear panel set to "BTL?"  
Set the MODE switch to "STEREO" when using the SRA-200E in STEREO mode.  
(MODE Switch p. 7)  
(Stereo Connection/ BTL Connection p. 8)  
Check to make sure the HOT and COLD of the Channel A and B inputs have not been connected in reverse (make  
sure the polarity is correct especially with the screw terminals).  
Check to make sure that you haven't mistakenly reversed the polarity when connecting the speaker cables.  
The volume is difficult to adjust with the attenuator.  
Use the INPUT LEVEL switch on the rear panel to select the input sensitivity (+4 dBm/ -10 dBm) that matches the  
system you are using.  
1 4  
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Ma in Sp e cifica tio n s  
• Rated Power Output  
• Connectors  
100 W x 2 (stereo, 8 ohms load, 1 kHz, 0.1 % or less  
Balanced Input Jacks (1/ 4 inch TRS phone type) x 2 (A,  
B)  
THD)  
150 W x 2 (stereo, 4 ohms load, 1 kHz, 0.1 % or less  
THD)  
Balanced Input Connectors (XLR-3-31 type) x 2 (A, B)  
Balanced Input Terminals x 2 (A, B)  
Speaker Terminals (Binding Posts) x 2 (A, B)  
300 W (BTL, 8 ohms load, 1 kHz, 0.5 % or less THD)  
• Frequency Response  
• Power Supply  
20 Hz to 50 kHz (+0/ - 1 dB, 1 W/ 8 ohms)  
AC 117/ 230/ 240 V (50/ 60 Hz)  
• Input Impedance  
• Power Consumption  
Balanced Input: 10 k ohms  
Unbalanced Input: 10 k ohms  
130 W (AC 117/ 230/ 240 V)  
• Dimensions  
• Input Sensitivity  
482 (W) x 364 (D) x 48.6 (H) mm  
19 (W) x 14-3/ 8 (D) x 1-15/ 16 (H) inches  
(EIA-1U rack mount type)  
-10 dBm/ +4 dBm  
• Non-Clip Maximum Input  
+24 dBm  
• Weight  
5.0 kg/ 11 lbs 1 oz  
• Recommended Load Impedance  
4 ohms or greater (stereo)  
• Accessories  
Owner's Manual  
Rubber Feet x 4  
8 ohms or greater (BTL)  
• Power Band Width  
20 Hz to 20 kHz (stereo, 8 ohms load, 50 W, 0.2 % or  
0 dBm = 0.775 V rms  
* In the interest of product improvement, the specifications and/ or appearance  
less THD)  
20 Hz to 20 kHz (BTL, 8 ohms load, 150 W, 0.2 % or less  
THD)  
of this unit are subject to change without prior notice.  
• Total Harmonic Distortion  
0.05 % or less (stereo, 8 ohms load, 1 kHz, 50 W)  
0.05 % or less (stereo, 4 ohms load, 1 kHz, 75 W)  
0.07 % or less (BTL, 8 ohms load, 1 kHz, 150 W)  
• S/N Ratio  
100 dB or greater (input terminate w ith 150 ohms,  
input sensitivity +4 dBm, IHF-A weighted)  
• Damping Factor  
125 or greater (8 ohms load, 1 kHz)  
• Channel Separation  
65 dB or greater (8 ohms load, 1 kHz, 50 W, DIN audio  
weighted)  
• Slew Rate  
11 V/ micro sec or greater (stereo, 8 ohms load)  
• Controls  
Attenuators x 2 (A, B)  
Power Switch  
MODE Switch (STEREO/ BTL)  
INPUT LEVEL Switch (+4 dBm/ -10 dBm)  
• Indicators  
Power Indicator  
Clip Indicators (A, B)  
Level Indicators (A, B)  
Protection Indicator  
1 5  
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Dim e n sio n s  
1 6  
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In d e x  
Air Vent ............................................................................................................................................................7,13  
Attaching the Rubber Feet ................................................................................................................................13  
Attenuator ..........................................................................................................................................................5,8  
Banana Plug ........................................................................................................................................................11  
Binding Posts ...................................................................................................................................................7,11  
BTL Connection .................................................................................................................................................8,9  
Cooling Fan ......................................................................................................................................................7,13  
DC Detection Circuit..........................................................................................................................................12  
Front Panel ............................................................................................................................................................5  
INPUT  
Connector...........................................................................................................................................................6  
Jack ......................................................................................................................................................................6  
Terminals ...........................................................................................................................................................6  
INPUT LEVEL Switch .........................................................................................................................................7  
LEVEL Indicator ...................................................................................................................................................5  
Limiter..................................................................................................................................................................10  
MODE Switch ....................................................................................................................................................7,8  
Muting Circuit ....................................................................................................................................................12  
Parallel Connection ..............................................................................................................................................9  
PC Limiter Circuit ..............................................................................................................................................10  
POWER Indicator.................................................................................................................................................5  
POWER Switch .....................................................................................................................................................5  
Protection Circuits..............................................................................................................................................12  
PROTECTION Indicator ................................................................................................................................5,12  
Rear Panel..............................................................................................................................................................6  
Rubber Feet .........................................................................................................................................................13  
Stereo Connection ................................................................................................................................................8  
Speaker Connection Terminals .....................................................................................................................7,11  
Thermal Protection Circuit ...............................................................................................................................12  
1 7  
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In fo rm a tio n  
When you need repair service, call your nearest Roland Service Center or authorized Roland distributor in your country as  
shown below.  
PAN AMA  
ITALY  
ISRAEL  
SIN GAPO RE  
AFRICA  
SUPRO MUNDIAL, S.A.  
Boulevard Andrews, Albrook,  
Panama City, REP. DE PANAMA  
TEL: 315-0101  
Roland Italy S. p. A.  
Viale delle Industrie 8,  
20020 Arese, Milano, ITALY  
TEL: (02) 937-78300  
Halilit P. Greenspoon &  
Swee Lee Company  
150 Sims Drive,  
Sons Ltd.  
SINGAPORE 387381  
TEL: 6846-3676  
8 Retzif Ha'aliya Hashnya St.  
Tel-Aviv-Yafo ISRAEL  
TEL: (03) 6823666  
EGYPT  
Al Fanny Trading Office  
9, EBN Hagar A1 Askalany Street,  
ARD E1 Golf, Heliopolis,  
Cairo 11341, EGYPT  
CRISTOFORI MUSIC PTE  
LTD  
Blk 3014, Bedok Industrial Park E,  
#02-2148, SINGAPORE 489980  
TEL: 6243-9555  
N O RW AY  
Roland Scandinavia Avd.  
Kontor Norge  
Lilleakerveien 2 Postboks 95  
Lilleaker N-0216 Oslo  
NORWAY  
PARAGUAY  
Distribuidora De  
Instrumentos Musicales  
J.E. Olear y ESQ. Manduvira  
Asuncion PARAGUAY  
TEL: (021) 492-124  
JO RDAN  
AMMAN Trading Agency  
245 Prince Mohammad St.,  
Amman 1118, JORDAN  
TEL: (06) 464-1200  
TEL: 20-2-417-1828  
REUN IO N  
Maison FO - YAM Marcel  
25 Rue Jules Hermann,  
Chaudron - BP79 97 491  
Ste Clotilde Cedex,  
TAIW AN  
ROLAND TAIWAN  
ENTERPRISE CO., LTD.  
Room 5, 9fl. No. 112 Chung Shan  
N.Road Sec.2, Taipei, TAIWAN,  
R.O.C.  
TEL: 273 0074  
KUW AIT  
Easa Husain Al-Yousifi  
Abdullah Salem Street,  
Safat, KUWAIT  
PO LAN D  
P. P. H. Brzostowicz  
UL. Gibraltarska 4.  
PL-03664 Warszawa POLAND  
TEL: (022) 679 44 19  
URUGUAY  
Todo Musica S.A.  
Francisco Acuna de Figueroa 1771  
C.P.: 11.800  
Montevideo, URUGUAY  
TEL: (02) 924-2335  
REUNION ISLAND  
TEL: (0262) 218-429  
TEL: 243-6399  
TEL: (02) 2561 3339  
SO UTH AFRICA  
That Other Music Shop  
(PTY) Ltd.  
11 Melle St., Braamfontein,  
Johannesbourg, SOUTH AFRICA  
LEBAN O N  
Chahine S.A.L.  
Gerge Zeidan St., Chahine Bldg.,  
Achrafieh, P.O.Box: 16-5857  
Beirut, LEBANON  
PO RTUGAL  
THAILAN D  
VEN EZUELA  
Tecnologias Musica e Audio,  
Roland Portugal, S.A.  
Cais Das Pedras, 8/ 9-1 Dto  
4050-465 PORTO  
Theera Music Co. , Ltd.  
330 Verng NakornKasem, Soi 2,  
Bangkok 10100, THAILAND  
TEL: (02) 2248821  
Musicland Digital C.A.  
Av. Francisco de Miranda,  
Centro Parque de Cristal, Nivel  
C2 Local 20 Caracas  
TEL: (01) 20-1441  
P.O.Box 32918, Braamfontein 2017  
Johannesbourg, SOUTH AFRICA  
TEL: (011) 403 4105  
PORTUGAL  
TEL: (022) 608 00 60  
Q ATAR  
Al Emadi Co. (Badie Studio  
& Stores)  
P.O. Box 62,  
Doha, QATAR  
TEL: 4423-554  
VENEZUELA  
TEL: (212) 285-8586  
VIETN AM  
Saigon Music  
138 Tran Quang Khai St.,  
District 1  
Ho Chi Minh City  
VIETNAM  
TEL: (08) 844-4068  
Paul Bothner (PTY) Ltd.  
17 Werdmuller Centre,  
Main Road, Claremont 7708  
SOUTH AFRICA  
RO MAN IA  
FBS LINES  
Piata Libertatii 1,  
RO-4200 Gheorghehi  
TEL: (095) 169-5043  
EURO PE  
P.O.BOX 23032, Claremont 7735,  
SOUTH AFRICA  
TEL: (021) 674 4030  
AUSTRIA  
Roland Austria GES.M.B.H.  
Siemensstrasse 4, P.O. Box 74,  
A-6063 RUM, AUSTRIA  
SAUDI ARABIA  
aDawliah Universal  
Electronics APL  
Corniche Road, Aldossary Bldg.,  
1st Floor, Alkhobar,  
SAUDI ARABIA  
RUSSIA  
MuTek  
3-Bogatyrskaya Str. 1.k.l  
107 564 Moscow, RUSSIA  
TEL: (095) 169 5043  
AUSTRALIA/  
N EW ZEALAN D  
TEL: (0512) 26 44 260  
ASIA  
AUSTRALIA  
BELGIUM/ HOLLAND/  
LUXEMBO URG  
Roland Benelux N. V.  
Houtstraat 3, B-2260, Oevel  
(Westerlo) BELGIUM  
TEL: (014) 575811  
CHIN A  
Roland Shanghai Electronics  
Co.,Ltd.  
5F. No.1500 Pingliang Road  
Shanghai, CHINA  
TEL: (021) 5580-0800  
SPAIN  
Roland Electronics  
de España, S. A.  
Calle Bolivia 239, 08020  
Barcelona, SPAIN  
Roland Corporation  
Australia Pty., Ltd.  
38 Campbell Avenue  
Dee Why West. NSW 2099  
AUSTRALIA  
P.O.Box 2154, Alkhobar 31952  
SAUDI ARABIA  
TEL: (03) 898 2081  
SYRIA  
Technical Light & Sound  
TEL: (93) 308 1000  
TEL: (02) 9982 8266  
Center  
DEN MARK  
SW EDEN  
Roland Shanghai Electronics  
Co.,Ltd.  
(BEIJING OFFICE)  
10F. No.18 Anhuaxili  
Chaoyang District, Beijing,  
CHINA  
Khaled Ebn Al Walid St.  
Bldg. No. 47, P.O.BOX 13520,  
Damascus, SYRIA  
TEL: (011) 223-5384  
N EW ZEALAN D  
Roland Scandinavia A/S  
Nordhavnsvej 7, Postbox 880,  
DK-2100 Copenhagen  
DENMARK  
Roland Scandinavia A/S  
SWEDISH SALES OFFICE  
Danvik Center 28, 2 tr.  
S-131 30 Nacka SWEDEN  
TEL: (08) 702 0020  
Roland Corporation Ltd.  
32 Shaddock Street, Mount Eden,  
Auckland, NEW ZEALAND  
TEL: (09) 3098 715  
TEL: (039)16 6200  
TURKEY  
Barkat muzik aletleri ithalat  
ve ihracat Ltd Sti  
Siraselviler Caddesi Siraselviler  
Pasaji No:74/ 20  
TEL: (010) 6426-5050  
FRAN CE  
Roland France SA  
4, Rue Paul Henri SPAAK,  
Parc de l'Esplanade, F 77 462 St.  
Thibault, Lagny Cedex FRANCE  
TEL: 01 600 73 500  
CEN TRAL/ LATIN  
AMERICA  
SW ITZERLAN D  
Roland (Switzerland) AG  
Musitronic AG  
Gerberstrasse 5, Postfach,  
CH-4410 Liestal, SWITZERLAND  
TEL: (061) 927-8383  
HO N G KO N G  
Tom Lee Music Co., Ltd.  
Service Division  
22-32 Pun Shan Street, Tsuen  
Wan, New Territories,  
HONG KONG  
Taksim - Istanbul, TURKEY  
TEL: (0212) 2499324  
ARGEN TIN A  
Instrumentos Musicales S.A.  
Av.Santa Fe 2055  
(1123) Buenos Aires  
ARGENTINA  
TEL: (011) 4508-2700  
U.A.E.  
Zak Electronics & Musical  
Instruments Co. L.L.C.  
Zabeel Road, Al Sherooq Bldg.,  
No. 14, Grand Floor, Dubai, U.A.E.  
TEL: (04) 3360715  
FIN LAN D  
Roland Scandinavia As,  
Filial Finland  
Lauttasaarentie 54 B  
Fin-00201 Helsinki, FINLAND  
TEL: (9) 682 4020  
UKRAIN E  
TEL: 2415 0911  
TIC-TAC  
Mira Str. 19/ 108  
IN DIA  
P.O. Box 180  
295400 Munkachevo, UKRAINE  
TEL: (03131) 414-40  
Rivera Digitec (India) Pvt. Ltd.  
409, Nirman Kendra Mahalaxmi  
Flats Compound Off. Dr. Edwin  
Moses Road, Mumbai-400011,  
INDIA  
BRAZIL  
Roland Brasil Ltda  
Rua San Jose, 780 Sala B  
Parque Industrial San Jose  
Cotia - Sao Paulo - SP, BRAZIL  
TEL: (011) 4615 5666  
GERMAN Y  
Roland Elektronische  
Musikinstrumente HmbH.  
Oststrasse 96, 22844 Norderstedt,  
GERMANY  
UN ITED KIN GDO M  
N O RTH AMERICA  
Roland (U.K.) Ltd.  
Atlantic Close, Swansea  
Enterprise Park, SWANSEA  
SA7 9FJ,  
TEL: (022) 493 9051  
IN DO N ESIA  
PT Citra IntiRama  
J1. Cideng Timur No. 15J-150  
Jakarta Pusat  
INDONESIA  
TEL: (021) 6324170  
CAN ADA  
Roland Canada Music Ltd.  
(Head Office)  
5480 Parkwood Way Richmond  
B. C., V6V 2M4 CANADA  
TEL: (604) 270 6626  
CO STA RICA  
JUAN Bansbach  
Instrumentos Musicales  
Ave.1. Calle 11, Apartado 10237,  
San Jose, COSTA RICA  
TEL: 258-0211  
TEL: (040) 52 60090  
UNITED KINGDOM  
TEL: (01792) 700139  
GREECE  
STOLLAS S.A.  
Music Sound Light  
155, New National Road  
Patras 26442, GREECE  
TEL: (061) 043-5400  
MIDDLE EAST  
KO REA  
Roland Canada Music Ltd.  
Cosmos Corporation  
1461-9, Seocho-Dong,  
Seocho Ku, Seoul, KOREA  
TEL: (02) 3486-8855  
CHILE  
Comercial Fancy S.A.  
Rut.: 96.919.420-1  
Nataniel Cox #739, 4th Floor  
Santiago - Centro, CHILE  
TEL: (02) 688-9540  
(Toronto Office)  
170 Admiral Boulevard  
Mississauga On L5T 2N6  
CANADA  
BAHRAIN  
Moon Stores  
No.16, Bab Al Bahrain Avenue,  
P.O.Box 247, Manama 304,  
State of BAHRAIN  
HUN GARY  
Intermusica Ltd.  
TEL: (905) 362 9707  
Warehouse Area DEPO’ Pf.83  
H-2046 Torokbalint, HUNGARY  
TEL: (23) 511011  
MALAYSIA  
BENTLEY MUSIC SDN BHD  
140 & 142, Jalan Bukit Bintang  
55100 Kuala Lumpur,MALAYSIA  
TEL: (03) 2144-3333  
TEL: 211 005  
U. S. A.  
EL SALVADO R  
Roland Corporation U.S.  
5100 S. Eastern Avenue  
Los Angeles, CA 90040-2938,  
U. S. A.  
CYPRUS  
Radex Sound Equipment Ltd.  
17, Diagorou Street, Nicosia,  
CYPRUS  
OMNI MUSIC  
IRELAN D  
Roland Ireland  
Audio House, Belmont Court,  
Donnybrook, Dublin 4.  
Republic of IRELAND  
TEL: (01) 2603501  
75 Avenida Norte y Final  
Alameda Juan Pablo  
,
PHILIPPIN ES  
Edificio No.4010 San Salvador,  
EL SALVADOR  
TEL: 262-0788  
TEL: (323) 890 3700  
G.A. Yupangco & Co. Inc.  
339 Gil J. Puyat Avenue  
Makati, Metro Manila 1200,  
PHILIPPINES  
TEL: (02) 66-9426  
IRAN  
MOCO, INC.  
No.41 Nike St., Dr.Shariyati Ave.,  
Roberoye Cerahe Mirdamad  
Tehran, IRAN  
MEXICO  
TEL: (02) 899 9801  
Casa Veerkamp, s.a. de c.v.  
Av. Toluca No. 323, Col. Olivar  
de los Padres 01780 Mexico D.F.  
MEXICO  
TEL: (021) 285-4169  
As of June 1, 2002 (Roland)  
TEL: (55) 5668-6699  
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