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BOSS DD-20说明书

Thank you, and congratulations on your choice of BOSS DD-20 Digital Delay.

Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY”and “IMPORTANT NOTES” (separate sheet).

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 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.

Main Features

● A full 23-second long delay provides plenty of time for loop play and sound-on-sound.

●The Memory function allows you to store up to four tones in the DD-20 itself, independent of the panel settings. You also get “seamless switching,” with memories switched smoothly as the reverberation continues.

●Features a Delay mode with a total of eleven effects, including new “SMOOTH,” “TWIST”and some effects modeled on analog and tape echo effects.

●The new “Time Advance function” provides quick, yet sensitive control of delay times.

●Equipped with custom backlit LCD for clear, easy viewing of delay times, even on dark stages.

Main Features (1)

Installing Batteries (3)

Making the Connections (4)

Mono Connection (5)

Stereo Connection (5)

Connecting the Stereo Output and the

Effects Processor (6)

Connecting to SEND/RETURN (6)

With Guitar and Bass Amps (6)

Connecting to an MTR or Mixer (7)

Operation (8)

ON/OFF Pedal Operation (8)

Panel Operation (9)

Storing Settings (Write Operation) (10)

Storing the “MANUAL” Sound in

Memory (10)

Changing and Storing the

“MEMORY” Sound (12)

MEMORY/TAP Pedal Operation

(Switching Memories) (14)

MEMORY/TAP Pedal Operation

(Tap Input) (15)

Part Names and Functions16 Front Panel (16)

Operating the DELAY TIME Knob..17

MODE List (18)

Rear Panel..............................................20How to Use Each Mode. (21)

How to Use SOS (Sound On Sound) (21)

How to Use TWIST (22)

How to Use WARP (22)

How to Use TAPE (23)

How to Use DUAL (24)

How to Use MODULATE (25)

How to Use the Tempo Function (26)

Indicating the BPM in the Delay Time Display (27)

Settings Made When the Power is Switched ON (28)

Global Procedures (28)

Changing the Pedal Mode Settings (29)

Setting the Output Mode (30)

Setting the External Pedal Function (31)

Changing How Memory Numbers Are

Indicated (33)

Returning Settings to Their Factory

Defaults (34)

Troubleshooting (35)

Sample Settings (37)

Setting Memo (40)

Specifications (41)

Index (42)

Batteries are supplied with the unit. The life of these batteries may be limited, however, since their primary purpose was to enable testing.

Insert the included batteries as shown in figure, being careful to orient the batteries correctly.

?When turning the unit upside-down, get a bunch of newspapers or magazines, and place them under the four corners or at both ends to prevent damage to the buttons and controls. Also, you should try to orient the unit so no buttons or controls get damaged.

?When turning the unit upside-down, handle with care to avoid dropping it, or allowing it to fall or tip over.

?Make sure the “+” and “–” ends of the batteries are oriented correctly.

?When the batteries run down, the POWER indicator gets dim. If this happens, replace with new batteries.

?When replacing the batteries, use six AA type.

?Avoid using new batteries together with used ones. In addition, avoid mixing different types of batteries. Doing so can result in fluid leakage.

?Battery life can vary depending on battery type.

Continuous usage time under battery power is about 7 hours with alkaline

batteries and about 2 hours with carbon batteries. (This may vary according to usage conditions.)

?The use of an AC adaptor is recommended as the unit’s power consumption is relatively high. Should you prefer to use batteries, please use the alkaline type.?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.

?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.

?When the unit is running on battery power, the power comes on when you insert the connector plug into the INPUT A (MONO) jack.

?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.

?If there are batteries in the unit while an AC adaptor is being used, normal operation will continue should the line voltage be interrupted (power blackout or power cord disconnection).

?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 powering up:Turn on the power to your guitar amp last.

When powering down:Turn off the power to your guitar amp first.

?Always make sure to have the volume level turned down before switching on power. 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.

?When operating on battery power only, the unit’s indicator and backlit LCD will become dim when battery power gets too low. Replace the battery as soon as possible.?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.

Making the Connections

ON/OFF Pedal Operation

Operation

Front Panel

Part Names and Functions