Roland DS-30A User Manual

 

291b

 

301

 

•

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).

 

307

 

•

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.

 

351

 

•

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.

 

352a

 

•

This device may interfere with radio and television reception. Do not 
use this device in the vicinity of such receivers.

 

352b

 

•

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 initiating 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.

 

354b

 

•

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.

 

355

 

•

To avoid possible breakdown, do not use the unit in a wet area, such 
as an area exposed to rain or other moisture.

 

356

 

•

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.

 

357

 

•

Do not put anything that contains water (e.g., flower vases) on the 
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.

 

359

 

•

Do not paste stickers, decals, or the like to this instrument. Peeling 
such matter off the instrument may damage the exterior finish.

 

add 1

 

•

During operation, this unit must be placed at a distance of no less 
than 20 cm from any walls.

 

add 2

 

•

Do not allow objects to remain on top of the unit while it is in 
operation.
• If you cover the top of the unit, the function is defeated, and 

temperature can rise to overly high level, which could cause burns 

if they are accidentally touched.

 

401a

 

•

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. After-
wards, be sure to wipe the unit thoroughly with a soft, dry cloth.

 

402

 

•

Never use benzine, thinners, alcohol or solvents of any kind, to avoid 
the possibility of discoloration and/or deformation.

 

553

 

•

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.

 

556

 

•

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.

 

557

 

•

A small amount of heat will radiate from the unit during normal 
operation.

 

558b

 

•

To avoid disturbing your neighbors, try to keep the unit’s volume at 
reasonable levels (especially when it is late at night).

 

559a

 

•

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.

 

562

 

•

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 impos-

sible to hear. For information on cable specifications, contact the 

manufacturer of the cable.

 

Front ............................................................................................................................................................. 6
Rear............................................................................................................................................................... 6

 

Using Two DS-30A Monitors for Stereo Sound ..................................................................................... 8
Important Notes on Placement................................................................................................................. 9
Precautions When Connecting and Turning on the Power ................................................................. 9

 

Troubleshooting........................................................................................................................................ 10
Specifications............................................................................................................................................. 10
Dimensions................................................................................................................................................ 11
Frequency Response................................................................................................................................. 11