Main Features

??? In Pursuit of High Sound Quality

The DS-30A powered monitor uses a two-way, bi-amplifier design to achieve high sound quality.

The monitor features a 120-mm LF Driver and a 25-mm soft-dome HF Driver as speakers. The amplification includes 20-watt and 10-watt amplifiers designed to achieve high sound quality.

??? Analog Input

Amplifier

10W

Amplifier

20W

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated ???dangerous voltage??? within the product???s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.

1.Read these instructions.

2.Keep these instructions.

3.Heed all warnings.

4.Follow all instructions.

5.Do not use this apparatus near water.

6.Clean only with a dry cloth.

7.Do not block any of the ventilation openings. Install in accordance with the manufacturers instructions.

8.Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9.Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10.Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

11.Only use attachments/accessories specified by the manufacturer.

12.Never use with a cart, stand, tripod, bracket, or table except as specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13.Unplug this apparatus during lightning storms or when unused for long periods of time.

14.Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

Used for instructions intended to alert the user to the risk of death or severe injury should the unit be used improperly.

Used for instructions intended to alert the user to the risk of injury or material damage should the unit be used improperly.

* 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 important instructions 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.

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.

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.

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???Do not open or perform any internal

modifications 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 instruc- tions directing you to do so). Refer all servicing to your retailer, the nearest Roland Service Center, or an autho- rized Roland distributor, as listed on the ???Information??? page.

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???Never use or store the unit in places

that are:

???Subject to temperature extremes (e.g., direct sunlight in an enclosed

vehicle, near a heating duct, on top of heat-generating equipment); or are

???Damp (e.g., baths, washrooms, on wet floors); or are

???Humid; or are

???Exposed to rain; or are

???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 instruc- tions, or as marked on the unit.

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???Use only the attached power-supply cord.

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???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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???This unit, either alone or in combi- nation 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 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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???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.

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???Protect the unit from strong impact. (Do not drop it!)

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???Do not force the unit???s power-supply cord to share an outlet with an unrea- sonable 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.

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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.

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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.

???The unit should be located so that its location or position does not interfere with its proper ventilation.

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???Always grasp only the plug on the

power-supply cord when plugging into, or unplugging from, an outlet or this unit.

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???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.

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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

plugs with wet hands when plugging into, or unplugging from, an outlet or this unit.

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???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. 5).

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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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???Should you remove the optical

connector caps, make sure to put them in a safe place out of children's reach, so there is no chance of them being swallowed accidentally.

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???The top of the unit may become hot, so

take care to avoid burns.

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and 4, please read and observe the following:

Power Supply

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.

Placement

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.

* Please also refer to Important Notes on Placement (p. 9).

Maintenance

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.

Additional Precautions

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.

Power Indicator

Lights when power is on.

Digital In Indicator

This lights up when output is received from a connected digital device or during standby. Connect the digital-signal output device, set the "Input Select switch" to DIGITAL INPUT, and set the "Digital Input select switch" according to the connector to which the device is attached (Coaxial or Optical).

* When the connected digital-signal output device is not powered up, the Digital In indicator does not light up.

Rear

HF Driver

* Do not touch the diaphragm.

LF Driver

* Do not touch the speaker cone.

Bass-reflex Ducts

These are conduits

for rich, bass-range reproduction.

Power Switch

This switch turns the power on/off.

Before turning the power on or off, you must lower the volume of this unit and your connected device etc.

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.

fig.

1

1 Digital Input

Coaxial Input Connector (Digital Input)

This is the digital input connector for coaxial cable.

It cannot be used for input of analog audio signals (no sound

is produced).

Optical Input Connector (Digital Input)

This is the digital input connector for optic-fiber cable. Use

commercially available optical cable for audio equipment to

make the connection.

Optical-connector Protective Cap

???After removing the protective cap, put in a safe place so that it doesn???t get lost.

???When not using the optical connector, attach the cap to keep the connector safe.

???When using the optical connector, be sure that the cap you removed is placed out of the reach of children. If a child has accidentally swallowed a cap, see a doctor immediately.

Digital Input Select Switch

This switch selects Optical or Coaxial. Select the connector used for the input signal.

Assign Switch

This switch selects the stereo position of the digital signal. It selects Right, L+R, or Left when using two DS-30A monitors for stereo sound (with digital signals).

Choose the setting appropriate for your setup.

With the DS-30A, there is no difference between L and R.

When using the digital input connectors of two DS-30A monitors for stereo sound, the digital signal can be input to either L or R.

2 Thru (Digital Out) Connector

When connecting multiple DS-30A monitors with digital signals, this connector is used for output to the second DS-30A.

Refer to Connection Examples (p. 8).

3 Analog Input

XLR/TRS Phone Input Connector (Analog Input)

This is for connecting XLR or TRS phone plugs.

XLR type

TRS Phone type phone type

(Unbalanced) (Balanced)

Both balanced and unbalanced connections are possible.

This instrument is equipped with balanced (XLR/TRS) type input jacks. Wiring diagrams for these jacks are shown below. Make connections after first checking the wiring diagrams of other equipment you intend to connect.

COLD(RING)

4 Input Select Switch

Used to select Digital Input or Analog Input.

Select the connector used for the input signal.

Panel Descriptions

5 Level Control

This adjusts the input level. Turning the control clockwise increases the sound from the speakers.

6 HF Trim Control

This adjusts the sound quality of the treble range (10 kHz, +/-3 dB).

7 LF Trim Control

This adjusts the sound quality of the bass range (80 Hz, +/-3 dB).

The LF Trim and HF Trim controls on the DS-30A are designed to correct the sound quality of the sonic field. Use these to make fine adjustments to match the usage conditions.

8 AC Inlet

Connect the included Power cord here. Plug it firmly in, so that the cable does not accidentally become disconnected.

???During setup and transport, be careful not to damage the vibrating portions (the speaker cone and diaphragm).

???Be sure to place the monitor so that the slits on the top to radiate the heat is not obstructed. Also, make sure the monitor does not touch any curtains or other fabrics.

???This unit performs cooling when the monitor is placed as shown below. Do not place the monitor on its side or upside down.

Heated Air

???When this unit is in operation, the top side will become hot. Take care not to touch it.

???Do not put anything on the unit.

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

*Please also refer to ???Placement??? in IMPORTANT NOTES (p. 5).

???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.

???Once the connections have been completed, 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. (When turning the power off, reverse this procedure.)

1.Turn on the power on the devices connected to the DS-30A.

2.Turn on the power on the DS-30A.

???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.

There???s No Sound

???Make sure the Input Level control has not been turned fully counterclockwise.

???Make sure the Input Select switch has been set to the connector where the input signal is connected (Digital Input or Analog Input).

???Make sure the Digital Input select switch has been set to the connector where the input signal is connected (Optical or Coaxial).

???Input a digital signal to the Digital Input connector. No

sound is produced when an analog signal is input.

926

The volume level of the instrument connected to ANALOG INPUT is too low

???Could you be using a connection cable that contains a resistor? Use a connection cable that does not contain a resistor.

During Digital Signal Input, the Stereo Image Is Reversed or Sounds Unnatural, or Output Doesn???t Sound Like Stereo

???Check the setting of the Assign switch (Right, L+R, or Left). The DS-30A uses an identical construction for the left and right monitors, and makes no distinction between left and right. During digital signal input, set the Assign switch L or R as appropriate for your setup.

???System

2-Way Bi-Amplified Monitor

???Enclosure Bass-reflex type

???Cabinet

1/2" PB (Baffle: 5/8" MDF)

???LF Driver

120 mm (5") Foamed polypropylene cone type, magnetically shielded

???HF Driver

25 mm (1") Soft dome type, magnetically shielded

???Frequency Response

78 Hz to 20 kHz (+/-3 dB)

???Crossover Frequency

2.3 kHz (active third order)

???LF Amplifier Power 20 W

???HF Amplifier Power 10 W

Analog in

???Input Sensitivity

0 dBu (0.775 Vrms)

???Input Impedance

20 k ohms (Balanced/Unbalanced)

Digital in

???Format

Conformity with S/P DIF

???Sample Rate

32 kHz to 96 kHz (de-emphasis: OFF)

???D/A Converter 24 bits

???Controls LEVEL Knob

LF TRIM Knob (80 Hz, +/-3 dB) HF TRIM Knob (10 kHz, +/-3 dB)

INPUT SELECT SW (Analog In/Digital In) ASSIGN SW (Right/L+R/Left)

DIGITAL INPUT SELECT SW (Optical/Coaxial)

POWER SW

???Indicators

POWER

DIGITAL IN

???Connectors

ANALOG INPUT (XLR / 1/4 inch TRS phone type) DIGITAL INPUT (Optical)

DIGITAL INPUT (Coaxial) DIGITAL THRU OUT (Coaxial)