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Boss CE-20 Owner's Manual

Chorus ensemble dimensional processor
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Thank you, and congratulations on your choice of BOSS CE-20 Dimensional Processor.
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

Provides six chorus sound types, including newly developed "RICH," "BASS," and
"ACOUSTIC" sounds, plus CE-1 and SDD-320 modeling.
New "BRILLIANCE" control lets you adjust the guitar's harmonic content and the chorus's
characteristic glistening effect.
"AMBIENCE" control developed especially for chorus lets you add greater body and
richness to the chorus effect.
All inputs and outputs are stereo-compatible.
Internal preamp (+4 dBu) lets you apply chorus to guitar and bass amp sends and returns
even after sounds are created.
Comes equipped with a headphone jack, allowing you to use headphones for easy monitoring.
Can run on battery power (six R6/LR6 (AA) type).
Copyright © 2001 BOSS CORPORATION
All rights reserved. No part of this publication may
be reproduced in any form without the written
permission of BOSS CORPORATION.

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  • Page 1: Main Features

    Thank you, and congratulations on your choice of BOSS CE-20 Dimensional Processor. 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.

  • Page 2: Installing Batteries

    Installing Batteries 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. fig.02 •...

  • Page 3: Making The Connections

    • Use a cable from Roland to make the connection. If using some other make of connection cable, please note the following precautions.

  • Page 4: Stereo Connection

    Making the Connections Connecting to a Guitar/Bass Amp Monaural Connection fig.03 Electric Electric Bass Guitar Stereo Connection fig.04 Electric Guitar (Bass Guitar) Bass Amplifier Guitar Amplifier Guitar Amplifier (Bass Amplifier) AC Adaptor PSA-series (option) AC Adaptor PSA-series (option)
  • Page 5 Making the Connections Connecting the Stereo Output and the Effects Processor fig.05 AC Adaptor PSA-series (option) Guitar Amplifier Effecter (Bass Amplifier) Electric Guitar (Bass Guitar)
  • Page 6 Making the Connections Connecting to SEND/RETURN on the Guitar/Bass Amp * Match the send output level on the guitar/bass amp and the level setting on the unit. If the PEAK indicator lights up frequently, turn down the output on the guitar/bass amp. * When the guitar/bass amp’s SEND/RETURN level is at +4 dBu, set the LEVEL switch on the rear panel of the unit to +4 dBu.
  • Page 7 Connecting to an MTR or Mixer Monaural Connection fig.07 Electric Guitar (Bass Guitar) Stereo Connection fig.08 Electric Guitar (Bass Guitar) Mixer Mixer Making the Connections AC Adaptor PSA-series (option) AC Adaptor PSA-series (option)
  • Page 8 * When the MTR or Mixer’s SEND/RETURN level is at +4 dBu, set the LEVEL switch on the rear panel of the unit to +4 dBu. When the CE-20 is connected to a mixer’s or multitrack recorder’s sends or returns, you can then elect to output only the chorus sound, with the direct sound turned off.
  • Page 9 Monaural Send/Stereo Return fig.10 SEND Stereo Send/Stereo Return fig.11 SEND R RETURN R Mixer SEND L RETURN R Mixer Making the Connections AC Adaptor PSA-series (option) RETURN L AC Adaptor PSA-series (option) RETURN L...

  • Page 10: Operation

    Operation “MANUAL” is selected when the power is turned on. EFFECT ON/OFF Pedal Operation fig.12 When at “ON” Each press of the EFFECT ON/OFF pedal switches effects on or off. When effects are off, the sound coming in through the INPUT jack is output unchanged.
  • Page 11 MANUAL/MEMORY Pedal Operation The Pedal mode (1–3) changes the function of the MANUAL/MEMORY pedal (or the MANUAL/MEMORY pedal used with the EFFECT ON/OFF pedal). Use the most appropriate setting for your particular application. At the factory settings, Pedal mode is set to “1.” When changing the Pedal mode settings, refer to p.
  • Page 12 Operation Changing the Pedal Mode Settings Use the following procedure when changing the Pedal mode settings. * The pedal mode setting is stored in memory when the power is switched off. 1. Switch off the power. • When running on battery power: Disconnect the connection plug from the INPUT R (MONO) jack.

  • Page 13: Panel Operation

    Panel Operation In order to follow along with the instructions given here, you should start out by having effects switched ON (press the EFFECT ON/OFF pedal and confirm that the EFFECT ON/OFF indicator has lighted), and press the MANUAL/MEMORY pedal to switch MANUAL (MANUAL indicator has lighted). Also set the knobs as shown in the illustration.

  • Page 14: Storing Settings (Write Operation)

    2. Press the WRITE button. The MEMORY indicator and the indicator for the currently selected memory flash, and the CE-20 is put into write standby. fig.19a 3. Press the SELECT button to select the memory (number) to which you want to store the sound.
  • Page 15 Operation 4. Press the WRITE button. The write operation is completed when the MEMORY indicator and the indicator for the write-destination memory begin to flash more rapidly. fig.20 Writing Write Finished Blink Blink rapidly Dark * To cancel the write operation, then before you press the WRITE button, rotate the knob or operate the MANUAL/MEMORY pedal.

  • Page 16: Changing And Storing The "Memory" Sound

    When a setting changes, the MEMORY indicator flashes automatically. fig.21 3. Press the WRITE button. The MEMORY indicator and the indicator for the currently selected MEMORY number start to flash, and the CE-20 is put into write standby. fig.22 Blink Write standby...
  • Page 17 Blink * If the knob or the MANUAL/MEMORY pedal position is changed before the WRITE button is pressed, the write operation is cancelled, and the CE-20 is returned to the status in effect in Step 2. Blink Writing...

  • Page 18: Part Names And Functions

    Part Names and Functions Front Panel fig.24 LOW Knob Adjusts the chorus sound’s lower range. At the center position, this is flat (no boost or cut; the LOW knob has no effect). HIGH Knob Adjusts the chorus sound’s upper range. At the center position, this is flat (no boost or cut;...
  • Page 19 General chorus sound. A perfect sound suitable for any kind of instrument. Models the Roland DIMENSION D (SDD-320). Provides a clear, crisp chorus sound. With this mode selected, you can use the RATE knob to switch between 1, 2, 3, 4, 1+4, 2+4, and 3+4 settings.
  • Page 20 This lights up when set to “MEMORY.” When “MEMORY” is selected, the indicator flashes whenever knob setting values are changed or when the CE-20 is in write standby; the indicator flashes more rapidly while the write operation is in progress. When at “MANUAL”...

  • Page 21: Rear Panel

    Rear Panel fig.26 INPUT Jacks (R (MONO), L) This is the input jack for connecting to the output of an electric guitar or other instrument or effects processor. For monaural use, make the connection to the R (MONO) jack. “Making the Connections” (p. 3–9) * The INPUT R (MONO) jack also doubles as the power switch when the unit is running on battery power.
  • Page 22 Switching the Direct Sound On and Off When the CE-20 is connected to a mixer’s or multitrack recorder’s sends or returns, you can then elect to output only the chorus sound, with the direct sound turned off. Use the following steps to turn the direct sound on and off.

  • Page 23: Changing How Memory Numbers Are Indicated

    Select the pattern that provides the easiest way to check the memory in any particular environment. When using the CE-20 in dimly lit surroundings, you can confirm memory numbers more easily by using the Lighting Pattern 2 setting.

  • Page 24: Returning Settings To Their Factory Defaults

    Returning Settings to Their Factory Defaults You can restore the memories (1–4), pedal mode settings, and the direct sound mute settings to their original factory values. Memory Settings Pedal Mode (p. 11–12) Direct Sound ON/OFF (p. 22) MEMORY Number Indication (p. 23) Carrying out the following procedure completely clears the content currently stored in the memories (1–4).

  • Page 25: Troubleshooting

    Troubleshooting The power doesn’t come on. Is the guitar connected correctly to the INPUT R (MONO) jack? Check the connections again (p. 3–9). * When running off batteries, the unit won’t switch on unless there’s something plugged into the INPUT jack. This helps conserve the batteries.

  • Page 26: Sample Settings

    Sample Settings RICH fig.27 SUPER RICH (Memory 1) fig.28 BASS STANDARD (Memory 2) fig.29...
  • Page 27 Sample Settings CHORUS FOR HEAVY RIFF fig.30 ACOUSTIC STANDARD fig.31 DEEP CHORUS (Memory 3) fig.31...
  • Page 28 Sample Settings STANDARD ANALOG fig.33 DIMENSIONAL D Roland DIMENSION D (SDD-320) Modeling Sound fig.34 CE-1 (Memory 4) BOSS CHORUS ENSEMBLE (CE-1) Modeling Sound fig.35 When “DIMENSIONAL D” is selected as the MODE, the RATE knob provides for selection among the SDD-320’s...

  • Page 29: Setting Memo

    Setting Memo fig.36 fig.36 fig.36...

  • Page 30: Specifications

    Specifications CE-20: Dimensional Processor Nominal Input Level -20 dBu (GUITAR/BASS) +4 dBu (AMPLIFIER SEND/RETURN) Input Impedance Nominal Output Level -20 dBu (GUITAR/BASS) +4 dBu (AMPLIFIER SEND/RETURN) Output Impedance 1 k (OUTPUT R (MONO), L) (PHONES) Recommended Load Impedance 10 k Residual Noise Level -93 dBu or less (IHF-A typ.)
  • Page 31 This product complies with the requirements of European Directive 89/336/EEC. 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.
  • Page 32 G601730601 ’00-xx-xx-xxx...

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