Roland Stage Amplifier SA 1000 User Manual

Thank you, and congratulations on your choice of the Roland SA-1000 Stage Amplifier.  
Before using this unit, carefully read the sections entitled: “IMPORTANT  
SAFETY INSTRUCTIONS” (p. 2), “USING THE UNIT SAFELY” (p. 3), and  
“IMPORTANT NOTES” (p. 5). These sections provide important information  
concerning the proper operation of the unit.  
Additionally, in order to feel assured that you have gained a good grasp of every  
USING THE UNIT SAFELY ................................................ 3  
Names of Things and What They Do ............................... 8  
Control Panel............................................................................................. 8  
Making the Connections................................................. 12  
Switching the Power On and Off ......................................................... 13  
About the Anti-Feedback Function................................ 15  
Features of SA-1000 ANTI-FEEDBACK.............................................. 15  
How to Use Anti-Feedback ................................................................... 16  
About the Use of Stacks ................................................. 18  
About the Protection Circuit........................................... 18  
Block Diagram ................................................................. 19  
Main Specifications......................................................... 20  
Copyright © 2007 ROLAND CORPORATION  
All rights reserved. No part of this publication may be reproduced in any form without the written  
permission of ROLAND CORPORATION.  
   
USING THE UNIT SAFELY  
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 using this unit, make sure to read the  
instructions below, and the Owner’s Manual.  
Do not excessively twist or bend the power cord,  
nor place heavy objects on it. Doing so can  
damage the cord, producing severed elements  
and short circuits. Damaged cords are fire and shock  
hazards!  
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Connect mains plug of this model to a mains  
socket outlet with a protective earthing  
connection.  
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This unit, either alone or in combination with an  
amplifier and headphones or speakers, may be  
capable of producing sound levels that could  
cause permanent hearing loss. Do not operate for a long  
period of time at a high volume level, or at a level that is  
uncomfortable. If you experience any hearing loss or  
ringing in the ears, you should immediately stop using  
the unit, and consult an audiologist.  
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Do not open or perform any internal modifica-  
tions on the unit.  
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Do not attempt to repair the unit, or replace parts  
within it (except when this manual provides  
specific instructions directing you to do so). Refer  
all servicing to your retailer, the nearest Roland Service  
Center, or an authorized Roland distributor, as listed on  
the “Information” page.  
..........................................................................................................  
Do not allow any objects (e.g., flammable  
material, coins, pins); or liquids of any kind  
(water, soft drinks, etc.) to penetrate the unit.  
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Never use or store the unit in places that are:  
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• Subject to temperature extremes (e.g., direct  
sunlight in an enclosed vehicle, near a heating  
duct, on top of heat-generating equipment); or  
are  
Immediately turn the power off, remove the  
power cord from the outlet, and request servicing  
by your retailer, the nearest Roland Service  
Center, or an authorized Roland distributor, as listed on  
the “Information” page when:  
• Damp (e.g., baths, washrooms, on wet floors); or are  
• Humid; or are  
• The power-supply cord or the plug has been damaged;  
or  
• Exposed to rain; or are  
• If smoke or unusual odor occurs  
• Objects have fallen into, or liquid has been spilled onto  
the unit; or  
• The unit has been exposed to rain (or otherwise has  
become wet); or  
• The unit does not appear to operate normally or  
exhibits a marked change in performance.  
• Dusty; or are  
• Subject to high levels of vibration.  
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Make sure you always have the unit placed so it is  
level and sure to remain stable. Never place it on  
stands that could wobble, or on inclined surfaces.  
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The unit should be connected to a power supply  
only of the type described in the operating  
instructions, or as marked on the rear side of unit.  
3
   
SA-1000W  
In households with small children, an adult  
should provide supervision until the child is  
capable of following all the rules essential for the  
safe operation of the unit.  
Do not insert hands,  
fingers, etc, into the  
openings in the unit.  
In particular, if the  
unit is to used in  
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households with  
Protect the unit from strong impact.  
(Do not drop it!)  
small children, always  
provide adult super-  
vision to ensure that  
children keep their  
hands and feet out of  
these openings.  
..........................................................................................................  
Do not force the unit’s power-supply cord to  
share an outlet with an unreasonable number 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 power rating (watts/amperes) for the  
extension cord. Excessive loads can cause the insulation  
on the cord to heat up and eventually melt through.  
The unit should be located so that its location or  
position does not interfere with its proper venti-  
lation.  
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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.  
Always grasp only the plug on the power-supply  
cord when plugging into, or unplugging from an  
outlet.  
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..........................................................................................................  
Do not put anything that contains water (e.g.,  
flower vases) on this unit. Also, avoid the use of  
insecticides, perfumes, alcohol, nail polish, spray  
cans, etc., near the unit. Swiftly wipe away any liquid that  
spills on the unit using a dry, soft cloth.  
At regular intervals, you should unplug the  
power plug and clean it by using a dry cloth to  
wipe all dust and other accumulations away from  
its prongs. Also, disconnect the power plug from the  
power outlet whenever the unit is to remain unused for  
an extended period of time. Any accumulation of dust  
between the power plug and the power outlet can result  
in poor insulation and lead to fire.  
..........................................................................................................  
Do not insert hands, fingers, etc, into the openings in the  
unit. In particular, if the unit is to used in households  
with small children, always provide adult supervision to  
ensure that children keep their hands and feet out of  
these openings.  
..........................................................................................................  
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.  
SA-1000  
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Never climb on top of, nor place heavy objects on  
the unit.  
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Never handle the power cord or its plug with wet  
hands when plugging into, or unplugging from,  
an outlet.  
Bottom  
..........................................................................................................  
Before moving the unit, disconnect the power  
plug from the outlet, and pull out all cords from  
external devices.  
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Before cleaning the unit, turn off the power and  
unplug the power cord from the outlet (p. 13).  
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Whenever you suspect the possibility of lightning  
in your area, pull the plug on the power cord out  
of the outlet.  
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The cooling vents on either side of the unit may  
become hot, so take care to avoid burns.  
4
IMPORTANT NOTES  
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:  
Power Supply  
Placement  
• 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 inter-  
ference.  
• Do not connect this unit to same electrical outlet that is  
being used by an electrical appliance that is controlled by  
an inverter (such as a refrigerator, washing machine,  
microwave oven, or air conditioner), or that contains a  
motor. Depending on the way in which the electrical  
appliance is used, power supply noise may cause this unit  
to malfunction or may produce audible noise. If it is not  
practical to use a separate electrical outlet, connect a  
power supply noise filter between this unit and the  
electrical outlet.  
• This device may interfere with radio and television  
reception. Do not use this device in the vicinity of such  
receivers.  
• Noise may be produced if wireless communications  
devices, such as cell phones, are operated in the vicinity of  
this unit. Such noise could occur when receiving or initi-  
ating a call, or while conversing. Should you experience  
such problems, you should relocate such wireless devices  
so they are at a greater distance from this unit, or switch  
them off.  
• 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.  
• Although the LCD and LEDs are switched off when the  
POWER switch is switched off, this does not mean that the  
unit has been completely disconnected from the source of  
power. If you need to turn off the power completely, first  
turn off the POWER switch, then unplug the power cord  
from the power outlet. For this reason, the outlet into  
which you choose to connect the power cord’s plug  
should be one that is within easy reach and readily acces-  
sible.  
• Do not expose the unit to direct sunlight, place it near  
devices that radiate heat, leave it inside an enclosed  
vehicle, or otherwise subject it to temperature extremes.  
Excessive heat can deform or discolor the unit.  
• Do not expose the unit to direct sunlight, place it near  
devices that radiate heat, leave it inside an enclosed  
vehicle, or otherwise subject it to temperature extremes.  
Also, do not allow lighting devices that normally are used  
while their light source is very close to the unit (such as a  
piano light), or powerful spotlights to shine upon the  
same area of the unit for extended periods of time.  
Excessive heat can deform or discolor the unit.  
• When moved from one location to another where the  
temperature and/or humidity is very different, water  
droplets (condensation) may form inside the unit. Damage  
or malfunction may result if you attempt to use the unit in  
this condition. Therefore, before using the unit, you must  
allow it to stand for several hours, until the condensation  
has completely evaporated.  
• Do not allow rubber, vinyl, or similar materials to remain  
on the unit for long periods of time. Such objects can  
discolor or otherwise harmfully affect the finish.  
• Do not paste stickers, decals, or the like to this instrument.  
Peeling such matter off the instrument may damage the  
exterior finish.  
• Depending on the material and temperature of the surface  
on which you place the unit, its rubber feet may discolor  
or mar the surface.  
You can place a piece of felt or cloth under the rubber feet  
to prevent this from happening. If you do so, please make  
sure that the unit will not slip or move accidentally.  
• During operation, this device must be placed at a distance  
of no less than 20 cm from any walls.  
5
     
IMPORTANT NOTES  
Maintenance  
• To clean the unit, use a dry, soft cloth; or one that is  
slightly dampened. Try to wipe the entire surface using an  
equal amount of strength, moving the cloth along with the  
grain of the wood. Rubbing too hard in the same area can  
damage the finish.  
• Never use benzine, thinners, alcohol or solvents of any  
kind, to avoid the possibility of discoloration and/or  
deformation.  
Additional Precautions  
• Use a reasonable amount of care when using the unit’s  
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 cable’s  
internal elements.  
• A small amount of heat will radiate from the unit during  
normal operation.  
• To avoid disturbing your neighbors, try to keep the unit’s  
volume at reasonable levels. You may prefer to use  
headphones, so you do not need to be concerned about  
those around you (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.  
• 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.  
• Wrap the power cord around the cord hook when trans-  
porting or storing the unit.  
SA-1000  
6
Main Features  
The SA-1000 is a combo amp that also functions as a 2.1-channel full stereo, lightweight, high-power stage amp.  
Easy setup  
Mixer, amp, and speakers are integrated in one unit, eliminating any need for complicated wiring. You can also connect a  
subwoofer unit with a single cable.  
Fully reproduces the powerful, low-frequency sounds of an organ  
Designed for high power, the SA-1000 outputs 350 watts (stereo: 75 W + 75 W, subwoofer: 200 W). This amp faithfully  
reproduces piano, organ, and other keyboard sounds. The SA-1000 also comes equipped with an "Organ Enhance" function.  
Convert to a simple PA system with the Stereo Link function  
The unit features a Stereo Link function, which allows you to connect two SA-1000s and use each as an independent left or  
right stereo speaker. You can also use the SA-1000 as a PA system for small-scale concerts.  
A full complement of input connections  
In addition to two keyboard input systems, the unit also includes mic and line level device input connectors. For an artist  
who talks or sings during their piano or organ performance, an SA-1000 is all they need.  
7
 
Names of Things and What They Do  
Control Panel  
fig.01-01  
1
14  
7
8
9
2
15  
3
4
5
6
11  
12  
13 10  
4. ANTI-FEEDBACK  
MIC INPUT  
This automatically detects and eliminates acoustic  
feedback.  
1. MIC Button  
When using the MIC IN input, press the MIC button.  
The ON indicator lights when MIC button is pressed.  
For further instructions on how to use anti-feedback,  
refer to “About the Anti-Feedback Function” (p. 15)  
ON/OFF Button  
2. REVERB Knob  
Press this button to turn the function on.  
When switched on, the indicator lights, and the system  
automatically works to prevent sudden feedback, as well  
as feedback that occurs during quiet stretches.  
This adjusts the amount of reverb applied to the mic  
input.  
*
*
Set the knob to "OFF" when the reverb is not being used.  
The reverb scale markings are approximate. Check the  
resulting sound as you adjust the amount of reverb applied.  
AUTO Button  
When the ON/OFF button is set to ON, holding down  
this button for one second or longer generates a  
calibration signal from the speakers. The microphone  
picks up the sound and the SA-1000 analyzes the  
characteristics of the microphone and the surroundings.  
Based on the results of this analysis, the microphone and  
environmental characteristics are compensated for  
automatically, making it difficult for feedback to crop  
up.  
3. VOLUME Knobs  
This adjusts the volume levels of the MIC input.  
*
To minimize noise as much as possible, we recommend  
turning the VOLUME knob for any channel not being used to  
0 and setting MIC button to OFF.  
The indicator flashes while this automatic correction is in  
progress. When the process is completed, the indicator  
remains lit, signifying that the feedback prevention  
function is in effect.  
8
   
Names of Things and What They Do  
12.Headphone Jack  
KEYBOARD INPUT(1, 2)  
Connect headphones here.  
*
*
Be sure to turn the PHONES knob setting to 0 before  
connecting or disconnecting headphones.  
5. VOLUME Knob  
These adjust the volume of the devices connected to the  
KEYBOARD IN jacks.  
Sounds from the SA-1000's speakers and LINE OUT are not  
muted even when headphones are connected.  
AUDIO INPUT  
13.VOLUME Knob  
This adjusts the overall volume output from the SA-  
1000’s speakers.  
6. VOLUME Knob  
This adjusts the volume of the device connected to the  
AUDIO IN jack.  
14.POWER Indicator  
This lights to indicate that the SA-1000's power is on.  
MASTER  
15.POWER Switch  
This switches the power on and off.  
7. ORGAN ENHANCE Button  
*
*
Be sure to turn the MASTER VOLUME knob down to 0  
whenever turning the power on or off.  
This switches the Organ Enhance effect on and off. When  
switched on, the organ’s low-frequency range will be  
emphasized. Switch this off when you’ve connected  
something other than an organ, such as a piano.  
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.  
8. AMBIENCE Button  
This switches the Ambience effect on and off. Switching  
this on produces a sound with greater breadth.  
9. LEVEL Indicator  
This indicates the MASTER output level.  
10.EQUALIZER  
The SA-1000 includes a 3-band equalizer.  
LOW Knob  
This adjusts the tone in the low-frequency range.  
MIDDLE Knob  
This adjusts the tone in the middle-frequency range.  
HIGH Knob  
This adjusts the tone in the high-frequency range.  
11.PHONES Knob  
This adjusts the headphone volume level.  
9
Names of Things and What They Do  
Jack Panel  
fig.01-02  
3
2
1
8
7
6
5
4
MIC INPUT  
KEYBOARD INPUT(1, 2)  
2. KEYBOARD IN 1, 2 Jack  
1. MIC IN Jack  
Connect a microphone here. For balanced input, you can  
connect to the TRS 1/4-inch phone jacks and XLR type  
connector.  
Connect organs, keyboards, or other line level devices  
here.  
These jacks accept stereo input; for mono input, use the  
left channel jacks. Line level input (-20 dBu) is  
supported.  
• This instrument is equipped with balanced (XLR/TRS)  
type jacks. Wiring diagrams for these jacks are shown  
below. Make connections after first checking the wiring  
diagrams of other equipment you intend to connect.  
AUDIO INPUT  
3. AUDIO IN Jack  
Connect a CD player or other line level device here.  
Inputs accept RCA phono type plugs.  
10  
   
Names of Things and What They Do  
LINE OUT  
STEREO LINK  
After connecting two SA-1000s together with one or two  
audio cables (1/4-inch phone type), you can easily play  
back high power sounds (350 W + 350 W) in stereo.  
6. LINE OUT Connectors  
These are XLR type connectors for balanced output (left  
and right stereo output).  
Connect a mixer, recording device, or other equipment  
here. Rated output level is +4 dBu.  
4. STEREO LINK IN Jack  
When using the Stereo Link function, input audio from  
the left channel SA-1000 here.  
fig.01-06  
You can also use this as an external input jack for mono  
input.  
0 dBu input level is supported.  
7. GND LIFT Switch  
5. STEREO LINK OUT Jack  
This outputs audio to the right channel SA-1000 when  
the Stereo Link function is used.  
Using external equipment connected to the LINE OUT  
connectors may result in generation of the “hum” of loop  
ground noise. If this occurs, you may be able to mitigate  
the problem by sliding this switch. Normally, this is set  
to “OFF.”  
When the STEREO LINK OUT jack is in use, the left  
channel audio is output in mono from the SA-1000's  
speakers.  
ON: Pin 1 is disconnected from the SA-1000’s ground.  
OFF: Pin 1 is connected to the SA-1000’s ground.  
Output level is 0 dBu.  
*
Signals output from these jacks are not routed through the  
MASTER section (EQUALIZER, ORGAN ENHANCE,  
AMBIENCE, VOLUME).  
SPEAKER  
For further instructions on connecting with Stereo Link,  
refer to “About Stereo Link” (p. 14).  
8. DEDICATED SPEAKER Jack  
Use this jack to output sounds to the SA-1000W  
subwoofer.  
Use the special connection cable included with the unit  
to connect to the SA-1000W’s INPUT jack. This provides  
powerful low end to the sound.  
*
Turn off the power on the SA-1000 before connecting or  
disconnecting cable.  
• Connect only the SA-1000W. Never connect any other  
equipment.  
• Be sure to use only the connection cable included with  
the unit to connect the subwoofer. Do not use ordinary  
audio cables.  
11  
Making the Connections  
Refer to the figure shown below to connect the SA-1000 and the other equipment.  
fig.02-01  
Keyboard  
Organ  
V-Drums  
Special connection  
cable  
INPUT  
CD Player  
Portable  
Audio Player  
Mic  
Mixer  
SA-1000W  
*
*
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.  
• Connect only the SA-1000W with the DEDICATED  
SPEAKER juck of SA-1000. Never connect any other  
equipment.  
• Be sure to use only the connection cable included with  
the unit to connect the SA-1000W. Do not use ordinary  
audio cables.  
When connection cables with resistors are used, the volume  
level of equipment connected to the inputs (MIC IN,  
KEYBOARD IN, AUDIO IN) may be low. If this happens,  
use connection cables that do not contain resistors.  
*
Before making any connections, set the SA-1000’s MASTER  
VOLUME knob to “0.”  
12  
     
Making the Connections  
Switching the Power On and Off  
*
Once the connections have been completed (p. 12), turn on  
power to your various devices in the order specified. By  
turning on devices in the wrong order, you risk causing  
malfunction and/or damage to speakers and other devices.  
1. Make sure that all volume controls on the SA-1000 and  
connected devices are set to 0.  
2. Turn on all the devices connected to the SA-1000’s  
input jacks.  
3. Turn on the SA-1000.  
4. Switch on any equipment connected to the SA-1000’s  
LINE OUT jacks.  
5. Adjust the volume levels for the devices.  
6. Before switching off the power, lower the volume on  
each of the devices in your system and then Turn Off  
the devices in the reverse order to which they were  
switched on.  
*
*
*
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.  
If you need to turn off the power completely, first turn off the  
POWER switch, then unplug the power cord from the power  
outlet. Refer to “Power Supply” (p. 5).  
Even with the volume all the way down, you may still hear  
some sound when the power is switched on, but this is normal,  
and does not indicate a malfunction.  
13  
   
Making the Connections  
About Setting the Volume  
About Stereo Link  
To obtain the best sound from the SA-1000, set the volume  
You can connect two SA-1000s with one audio cable (1/4"  
phone type) for high-power stereo sound (350 watts per  
channel).  
level using the following procedure.  
fig.02-04  
This function is called "Stereo Link."  
The SA-1000's mixer function is stereo compatible, allowing  
you to output the right channel signals from the STEREO  
LINK OUT jack.  
This lets you play sounds in stereo, as shown below.  
Connection  
Up to four input devices can be connected.  
fig.02-06  
MIC / KEYBORAD / AUDIO  
1. When using the MIC IN input, press the MIC button.  
2. Adjust the MIC REVERB knob to achieve the desired  
sound.  
SA-1000  
(L)  
SA-1000  
(R)  
3. Turn the VOLUME knob for each input to adjust the  
input volume levels.  
STEREO LINK  
OUT TO SIDE R  
STEREO LINK  
IN  
*
If the sound is distorted (when the LEVEL indicator lights at 0  
dB), adjust the input VOLUME knobs or the volume levels of  
the devices connected to the inputs.  
At this point, adjust the levels to achieve a balance in volume  
for each input.  
Operation  
1. Connect the devices to the SA-1000 (L).  
fig.02-051  
2. Connect the STEREO LINK OUT R jack on the SA-1000  
(L) and the STEREO LINK IN jack on the SA-1000 (R).  
3. Turn on both SA-1000 (L) and SA-1000 (R).  
4. Adjust the volume levels on all devices.  
5. Adjust the SA-1000 (L) and SA-1000 (R) volume levels  
separately using their MASTER VOLUME knobs.  
About the Volume and Tone Settings  
Adjust the R and L volume levels separately using their  
MASTER VOLUME knobs.  
4. Use the EQUALIZER knobs (LOW/MIDDLE/HIGH),  
ORGAN ENHANCE button, and AMBIENCE button to  
adjust the tone to your liking.  
You can adjust the EQUALIZER (LOW/MIDDLE/HIGH  
knobs), ORGAN ENHANCE, and AMBIENCE  
independently for the L and R sides.  
5. Use the MASTER VOLUME knob to adjust the overall  
volume level.  
Basically, they should be set to the same positions, but you  
can adjust each one as necessary to suit the needs of a  
particular setup.  
6. Set up the ANTI-FEEDBACK if necessary. (p. 15)  
14  
   
About the Anti-Feedback Function  
Features of SA-1000 ANTI-FEEDBACK  
Many previous anti-feedback systems use methods of determining feedback that actually generate feedback in order to detect the  
feedback point, resulting in a system that is extremely unpleasant to use.  
On the other hand, the SA-1000 employs a newly developed method that does not require generation of feedback, but instead  
uses a microphone to capture a calibration signal output from the SA-1000’s own speakers, then performs a feedback analysis to  
estimate the feedback point.  
2
Prevents sudden feedback that occurs when the  
microphone is in use.  
What is Acoustic Feedback  
When sounds output by speakers reenter a microphone, they  
end up being output from the speakers at even greater  
volume, and as this cycle is repeated, an unpleasant and  
uncomfortable oscillating sound is created.  
This system automatically cuts out feedback that crops  
up suddenly due to changes in the surroundings or  
movement of the microphone, using an extremely  
narrow filter to minimize alterations in the sound  
quality.  
Pointing microphones towards speakers or placing them  
near the speakers allows the amplified sounds from the  
speakers to enter the microphones again, thus making it even  
easier for feedback to arise.  
Safety Margin Function  
3
Conditions are calibrated automatically to help prevent  
feedback.  
To Avoid Feedback  
In general, avoiding feedback requires the following  
measures:  
Frequencies prone to feedback will change depending on  
the microphones used, the placement of the SA-1000  
(speakers), and the SA-1000’s output level settings.  
• Setting output levels so they’re appropriate for the  
particular site or room  
The SA-1000 measures conditions first to detect these  
frequencies and secure a sufficient safety margin (i.e., an  
ample margin of gain before feedback starts to occur).  
The entire process, from measurement to securing of the  
safety margin, takes only a few seconds.  
• Setting connected devices to suitable levels  
• Keeping microphones and speakers as distant from each  
other as possible, and avoiding placing microphones  
such that they are pointed directly at the speakers.  
The dedicated filter is optimally processed for each  
feedback point, resulting in an acoustically stable system  
that minimizes tonal changes.  
These methods will allow you to suppress the most serious  
types of feedback.  
In actuality, however, feedback can still occur as you attempt  
to achieve necessary output levels, while on the other hand,  
moving speakers away to avoid causing feedback can end up  
making the sound difficult to hear.  
Relationship Between Anti-Feedback Functions  
and Buttons  
ON/OFF Button:  
AUTO Button:  
Switches Dynamic function on and off  
Activates the Safety Margin function  
Reducing Acoustic Feedback with  
the SA-1000 (Anti-Feedback)  
About Speaker and Mic Placement  
Conventional PA systems generally require performers using  
mics to stand behind speakers to avoid feedback. This makes  
it difficult to hear the sound from the speakers, making  
comfortable monitoring impossible.  
The SA-1000 includes the following three built-in functions,  
which allow you to achieve an acoustically stable system that  
automatically controls the occurrence of feedback and makes  
it more difficult for feedback to arise.  
The SA-1000’s internal anti-feedback system suppresses  
feedback, allowing performers to monitor the sound in  
comfort, even when standing in front of the speakers.  
Dynamic Function  
1
Suppresses feedback that occurs at times when there is  
no sound from the microphone.  
• Howling could be produced depending on the location of  
microphones relative to speakers. This can be remedied  
by:  
For feedback generated when no audio is being input via  
the microphone (for example, at times when the  
performer is not at the microphone), the feedback point  
is automatically detected and the feedback is cut with a  
dedicated filter.  
1. Changing the orientation of the microphone(s).  
2. Relocating microphone(s) at a greater distance from  
speakers.  
3. Lowering volume levels.  
15  
     
About the Anti-Feedback Function  
How to Use Anti-Feedback  
Anti-feedback is enabled only for MIC input.  
When Using a Mic Stand  
When Using a Handheld Mic  
Both the mic characteristics and the characteristics of the  
surrounding environment can be compensated for.  
Only the mic conditions can be corrected.  
1. Press the ANTI-FEEDBACK ON/OFF button so its  
1. Set up and connect the SA-1000 and the mic.  
indicator is lit.  
• Set up the SA-1000 and the mic in the positions they will  
be used.  
2. Set up and connect the SA-1000 and the mic.  
• Set the SA-1000’s VOLUME knob to the level actually to  
be used in performance.  
• Adjust the height of the mic stand and the angle of the  
mic.  
• To accurately measure the mic characteristics, keep the  
mic, whether held by hand or mounted on a stand, fixed  
in the position shown below. To setting up the mic  
position, please be careful of feedback.  
• Set the SA-1000’s VOLUME knob to the level actually to  
be used in performance.  
2. Press the ANTI-FEEDBACK ON/OFF button so its  
indicator is lit.  
(1) Angle:  
(2) Distance:  
(3) Height:  
Directly facing the front of the SA-1000  
Approx. 50 cm (20 inches)  
120 cm (48 inches) or more (Height  
during actual use)  
3. Hold down the ANTI-FEEDBACK AUTO button for at  
least one second.  
The indicator flashes, and the sound of the calibration  
signal is output from the speaker.  
(4) Mic Direction: Level and directed at the SA-1000  
fig.03-10  
The calibration signal is set automatically in accordance  
with the mic position and volume setting.  
(1,4)  
*
*
Be aware that the sound output is relatively loud.  
(2)Approx. 50 cm (20 inches)  
To increase measurement accuracy, keep the surroundings as  
quiet as possible.  
(3)  
120 cm  
(48 inches)  
or more  
When measurement and analysis are finished and the  
feedback prevention processing is completed, the  
indicator stops flashing and remains lit.  
3. Hold down the ANTI-FEEDBACK AUTO button for at  
least one second.  
The indicator flashes, and the sound of the calibration  
signal is output from the speaker.  
The calibration signal is set automatically in accordance  
with the position of the mic and the volume setting.  
*
*
Take care not to stand between or leave any object obstructing  
the space between the mic and the SA-1000.  
To increase measurement accuracy, keep the surroundings as  
quiet as possible.  
When measurement and analysis are finished and the  
feedback prevention processing is completed, the  
indicator stops flashing and remains lit.  
16  
 
About the Anti-Feedback Function  
When automatic measurement is  
not completed  
• If you press the AUTO button to start the calibration  
without a microphone connected or with the volume  
level turned down too low, SA-1000 outputs an error  
sound from the speaker and stops analysis. If this occurs,  
check your connections and settings.  
• If the surrounding noise level is too loud or the  
microphone position is too far, SA-1000 outputs an error  
sound from the speaker and stops analysis. If this occurs,  
the ANALYSIS indicator light goes off.  
• If you press the ON/OFF button while the ANALYSIS  
indicator is lit, the indicator light goes off, and the anti-  
feedback function is switched off. The results of the  
correction process are stored in memory, though, so  
turning the function on again returns the function to its  
previous status. However, turning off the power clears  
the results of the correction.  
• SA-1000 does not respond to panel operations while in  
ANALYSIS calibration. It responds after the calibration  
is completed.  
Anti-feedback does not work for AUDIO and  
KEYBOARD input.  
• The sound quality is altered somewhat while the anti-  
feedback is operational.  
• With some settings, feedback may not be suppressed,  
even after you have run the anti-feedback process with  
the AUTO button.  
17  
About the Use of Stacks  
When stacking, be sure to follow the instructions below.  
• Be sure to set up and use these units in stable, level locations.  
• Be careful not to get your fingers pinched.  
Stack so that the speaker side of both the top cabinet  
and the bottom cabinet face the same direction.  
Adjust the horizontal position of the top cabinet so that  
the corner protectors are properly engaged and locked  
at all four corners between the top and bottom  
cabinets.  
fig.03-01  
Do not use the amplifiers without proper corner  
protector engagement. Otherwise, you risk having the  
top cabinet tumble down.  
Always make sure that the corners are properly engaged  
before you use the amplifiers.  
fig.03-02  
OK  
NG  
About the Protection Circuit  
This unit is equipped with a protection circuit.  
The protection circuit helps ensure safety by activating when excessive input continues for a long time while the device is at a  
location with a high ambient temperature.  
When the protection circuit is active, the MIC ON and the MIC OFF indicators flashes, and the sound output drops in volume or  
ceases altogether.  
Position this device away from walls or other objects so that the vents remain unobstructed, thus preventing the activation of the  
protection circuit.  
18  
   
Block Diagram  
MIC  
MIC  
ON/OFF  
REVERB  
ANTI-FEEDBACK  
MIC  
MIC  
VOLUME  
KEYBOARD 1  
L (MONO)  
R
KEYBOARD 1  
VOLUME  
L
STEREO  
LINK  
control  
KEYBOARD 2  
R
SPEAKER  
SA-1000W  
EQUALIZER  
ORGAN ENHANCE  
AMBIENCE  
L (MONO)  
R
volume  
control  
MASTER  
VOLUME  
KEYBOARD 2  
VOLUME  
PHONES  
AUDIO  
PHONES  
VOLUME  
LINE OUT  
L
L
R
R
AUDIO  
VOLUME  
STEREO LINK  
STEREO LINK  
OUT R  
IN  
19  
 
Main Specifications  
Connectors  
SA-1000  
MIC  
Rated Power Output  
MIC INPUT Jacks (XLR type, 1/4" TRS phone type)  
350 W (75 W x 2 + SUBWOOFER 200 W)  
KEYBOARD1, 2  
LINE INPUT Jacks (L/MONO, R) (1/4" phone type)  
AUDIO  
Nominal Input Level (1 kHz)  
INPUT (MIC): -50 dBu  
INPUT (PHONE): -20 dBu  
INPUT (RCA): -20 dBu  
LINE INPUT Jacks (L, R) (RCA phono type)  
Output  
STEREO LINK INPUT: 0 dBu  
LINE OUTPUT Jacks (L, R) (XLR type)  
Stereo Link  
Nominal Output Level (1 kHz)  
BALANCED OUT: +4 dBu  
STEREO LINK IN Jack (1/4" phone type)  
STEREO LINK OUT Jacks (R) (1/4" phone type)  
Others  
PHONES Jack (Stereo 1/4" phone type)  
SUBWOOFER OUT Jack (1/4" phone type)  
STEREO LINK OUTPUT: 0 dBu  
* 0 dBu = 0.775 Vrms  
Speakers  
16 cm + Tweeter (Coaxial, 2-way) x 2  
6.5 inches + Tweeter (Coaxial, 2-way) x 2  
Power Supply  
Controls  
AC 117 V, AC 220 V, AC 230 V, AC 240 V (50/60 Hz)  
[Input Controls]  
MIC  
Power Consumption  
MIC Button (ON/OFF)  
Input VOLUME Knob  
REVERB Knob  
ANTI-FEEDBACK Button (ON/OFF)  
ANTI-FEEDBACK AUTO Button  
94 W  
Dimensions  
456 (W) x 343 (D) x 297 (H) mm  
18 (W) x 13-9/16 (D) x 11-3/4 (H) inches  
KEYBOARD1, 2  
Input VOLUME Knob  
AUDIO  
Weight  
11.5 kg / 25 lbs 6 oz  
Input VOLUME Knob  
[Master Controls]  
Equalizer  
LOW Knob  
MIDDLE Knob  
HIGH Knob  
ORGAN ENHANCE Button  
AMBIENCE Button  
MASTER VOLUME Knob  
PHONES VOLUME Knob  
POWER Switch  
GND LIFT Switch  
Indicators  
MIC ON/MIC OFF  
ANTI-FEEDBACK ON/OFF  
ANTI-FEEDBACK AUTO  
LEVEL METER  
POWER  
20  
   
Main Specifications  
SA-1000W (SUBWOOFER)  
Speaker  
30 cm / 12 inches  
Nominal Impedance  
4 ohms  
Connection  
INPUT Jack (1/4" phone type)  
Dimensions  
456 (W) x 325 (D) x 560 (H) mm  
18 (W) x 12-13/16 (D) x 22-1/16 (H) inches  
Weight  
11.5 kg / 25 lbs 6 oz  
Accessories  
Owner´s Manual  
Speaker Connection Cable  
Connection Manual  
* In the interest of product improvement, the specifications  
and/or appearance of this unit are subject to change  
without prior notice.  
21  
For EU Countries  
For China  
For EU Countries  
This product complies with the requirements of European Directives EMC 89/336/EEC and LVD 73/23/EEC.  
For the USA  
FEDERAL COMMUNICATIONS COMMISSION  
RADIO FREQUENCY INTERFERENCE STATEMENT  
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the  
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential  
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in  
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee  
that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or  
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the  
interference by one or more of the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  
Consult the dealer or an experienced radio/TV technician for help.  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
(1) this device may not cause harmful interference, and  
(2) this device must accept any interference received, including interference that may cause undesired operation.  
Unauthorized changes or modification to this system can void the users authority to operate this equipment.  
This equipment requires shielded interface cables in order to meet FCC class B Limit.  
For Canada  
NOTICE  
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.  
AVIS  
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.  
SD001049  
3DH  
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