Contents

Boss SL-20 Owner’s Manual PDF

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Summary of Content for Boss SL-20 Owner’s Manual PDF

Thank you, and congratulations on your choice of the BOSS SL-20 Audio Pattern 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 understanding 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

Continuously cuts input audio sounds and create a wide variety of slice patterns.

Includes a HARMONIC slice pattern that produces melodies from the chords you play. This feature provides you with a new way to express your musical ideas.

Includes a recording function. You can record up to forty seconds of the phrases you play, then play these back with loop playback. This lets you enjoy performing solos backed by your recorded phrases.

The SL-20 is equipped with a MIDI IN connector, allowing you to synchronize tempos with external MIDI devices.

The unit provides six different types of stereo effects, including three-dimensional sound field effects, which are available when the SL-20 is used in stereo output.

An expression pedal (optional) can be connected and used for hands-free control of the direct level, effects level, and other parameters.

The TEMPO indicator provides a clear confirmation of the current tempo, even on dimly lit stages.

Copyright 2008 BOSS CORPORATION

All rights reserved. No part of this publication may be reproduced in any form without the written permission of BOSS CORPORATION.

SL-20_e.book 1

SL-20_e.book 2

Contents

Main Features ..........................1

Panel Descriptions ....................3 Front Panel ..........................................3 Rear Panel...........................................5

Installing Batteries....................6

Making the Connections ...........7 Mono Input Connection........................8 Stereo Input Connection ......................9

Operating the SL-20 ...............10 Basic Operation .................................10 Panel Operation.................................11

Setting the Tempo.......................... 11 Switching the Slice Pattern ........... 11 Adjusting the Attack and Duty.... 11 Adjusting the Effect Level ............ 11 Adjusting the Direct Level............ 11 Switching the Output Mode......... 11 Switching the Pedal Mode............ 11

Using the TAP Pedal to Cue the Slice Pattern ................................12 Setting the Tempo with the TAP Pedal ............................12 Recording/Loop Playback..................13 Controlling Functions with an Expression Pedal ..................15

Setting the Function of the Expression Pedal ............................ 15

Setting the Tempo Response When Slice Patterns Are Switched ....16 Setting the Output Mode....................17 Synchronizing Performances with External MIDI Devices................18

Setting the Retrigger Mode........... 19

Returning Settings to Their Factory Defaults..................... 20

Troubleshooting..................... 21

Setting Memo ........................ 22

Main Specifications ................ 24

MEMO ................................... 25

Printing Conventions and icons in This Manual Indicates information that you should be aware of when using the SL-20.

Indicates supplementary information about an operation.

Indicates information about a convenient operation.

, (p.**) Indicates a reference page.

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SL-20_e.book 3

Panel Descriptions

Front Panel

BANK Knob Turn to switch the slice pattern variation.

EFFECT LEVEL Knob Adjusts the volume of the effect sound. The volume of the effect sound increases as the knob is turned to the right.

TEMPO Indicator This flashes in sync with the tempo. The indicator flashes red on the slice patterns first beat and green on the second, third, and fourth beats.

TEMPO Knob This sets the tempo. Turn the knob to the right to increase the tempo, and to the left to slow the tempo down. You can adjust the tempo more precisely by turning the knob slowly. * You cannot set the tempo with the SL-20

while MIDI clock is being received.

DUTY Knob Adjusts the duration of the slice pattern sound. The sound is played longer the further the knob is turned to the right.

OUTPUT MODE Button This switches the output mode. * You can select the output mode only when connected for stereo output. MONO is selected when the

SL-20 is connected in monaural. OUTPUT MODE List

OUTPUT MODE Function

MONO The same signal is output from both the OUTPUT R/MONO jack and the L jack. STEREO FIXED Output with fixed left and right positions.

RANDOM The output randomly alternates between left, right, and center. PING-PONG The output bounces between the left and right channels. AUTO The location of the sound shifts smoothly between the left and right channels.

(3D Cross) The location of the sound moves forward and back as well as left and right.

(3D Panner) This produces a swirling, three-dimensional type of sound.

ATTACK Knob Adjusts the volume of the slice patterns attack. The volume of the attack is boosted as the knob is turned to the right.

DIRECT LEVEL Knob Adjusts the volume of the direct sound when the effect is on. The volume of the direct sound increases as the knob is turned to the right.

PATTERN Knob Turn to switch the slice pattern. * The slice pattern is

composed of one measure.

PEDAL MODE Button This selects the behavior of the START/ STOP pedal when its pressed. LATCH: Pressing the START/STOP

pedal toggles the effect on/off. * When switching effects off, the effect

switches off at the time the pedal is released. MOMENTARY: The effect is switched on only as

long as the START/STOP pedal is held down. Releasing the pedal switches off the effect.

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Panel Descriptions

SL-20_e.book 4

POWER Indicator This indicator shows whether the power is on or off, and also functions as a battery-check indicator. * When the indicator starts to dim or fails to light, the

batteries are exhausted. When this occurs, install new batteries. For instructions on replacing the batteries, refer to Installing Batteries (p. 6).

* The power comes on when a plug is inserted into the INPUT R/MONO jack, and goes off when it is unplugged.

START/STOP Indicator This lights up when the ef- fect is on.

TAP Indicator This lights up when the TAP pedal is pressed.

TAP Pedal You can set the tempo by tapping it in with this pedal. You can jump back to the beginning of the slice pattern measure by pressing the TAP pedal while the TAP indicator is off. When this is pressed during playback of a slice pattern or phrase, the SL-20 returns the slice pattern or phrase to the beginning and starts playback from there. * You cannot set the tempo with the SL-

20 while MIDI clock is being received. Using the TAP Pedal to Cue the Slice Pattern (p. 12)

Setting the Tempo with the TAP Pedal (p. 12)

Recording/Loop Playback (p. 13)

START/STOP Pedal This alternately switches the effect on or off each time the pedal is pressed. The slice pattern plays when the effect is switched on. Pressing and holding down the pedal for at least two seconds switches the SL-20 to recording standby. After recording, the SL-20 switches to loop playback.

Recording/Loop Playback (p. 13) * When switching effects off, the effect

switches off at the time the pedal is released.

* When the effects are off, sound arriving at the INPUT jack is output without change.

PLAY Indicator This lights up during loop playback of phrases.

REC Indicator This flashes when the SL-20 is in recording standby and lights steadily during recording.

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Panel Descriptions

SL-20_e.book 5

Rear Panel

INPUT Jacks (INPUT R/MONO, L) These input jacks are used for connecting electric guitars, bass guitars, other instruments, and effects processors. If using monaural input, connect only to the R/MONO jack.

Making the Connections (p. 7) * The INPUT R/MONO jack also doubles as

the power switch. The power comes on when a plug is inserted into the INPUT R/MONO jack, and goes off when it is unplugged. Unplug any connected plugs when the unit is not in use.

EXP Pedal Jack Connect an optional expression pedal (such as the Roland EV-5; optional) to this jack. Once connected, the pedal can be used to control the direct level and effect level in real time. * Use only the specified expression pedal (such as the

Roland EV-5; optional). By connecting any other expression pedals, you risk causing malfunction and/or damage to the unit.

Controlling Functions with an Expression Pedal (p. 15)

DC IN (AC Adaptor) Jack This jack is for connecting an AC adaptor (BOSS PSA series; optional). Using an AC adaptor allows for long performances without worrying about the batteries going dead. * When you are using an AC

adaptor, be sure to use only the specified type (PSA series; optional). Using an adaptor other than the specified type may cause the unit to malfunction, or cause damage to the unit.

MIDI IN Connector This connector receives the MIDI clock from a connected external MIDI device to synchronize the devices tempos.

Synchronizing Performances with External MIDI Devices (p. 18)

OUTPUT Jacks (OUTPUT R/MONO, L) Use these jacks to connect the SL-20 to a guitar amp, a keyboard amp, or to an effects processor, mixer, multitrack recorder, or other such device. Connecting to both the R/MONO and L jacks allows you to achieve a variety of stereo effects. If using monaural output, connect only to the R/ MONO jack.

OUTPUT MODE Button (p. 3) Making the Connections (p. 7) Setting the Output Mode (p. 17)

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SL-20_e.book 6

Installing Batteries

Insert the batteries as shown below, being careful to orient the batteries correctly.

fig.010

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 knobs. Also, you should try to orient the unit so that no buttons or knobs get damaged.

When turning the unit upside-down, handle it 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. Batteries are supplied with the unit. The life of these batteries may be limited,

however, since their primary purpose is to enable testing. When the batteries run down, the POWER indicator grows dim. If this happens, install

new batteries. When replacing the batteries, use six AA-type batteries. Avoid using new batteries together with used ones. In addition, avoid mixing different

types of batteries. Doing so may result in fluid leakage that can damage the unit. Battery life can vary depending on the battery type.

Continuous usage time under battery power is about 18 hours with alkaline batteries and about 7 hours with carbon batteries. (This may vary according to usage conditions.)

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Making the Connections

When using an AC adaptor, be sure to use only the specified type (PSA series; optional). Using an adaptor other than the specified type may cause the unit to malfunction, or cause damage to the unit.

To prevent malfunction and/or damage to speakers or other devices, always turn down the volume and turn off the power to all devices before making any connections.

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.

Some connection cables contain resistors. When connection cables with resistors are used, the sound level may be extremely low, or impossible to hear. For information on cable specifications, contact the manufacturer of the cable.

The INPUT R/MONO jack doubles as a power switch. Inserting a plug in the INPUT R/MONO jack turns on the power; the power is switched off when the plug is disconnected. Be sure to unplug the cable from this jack when the SL-20 is not in use.

If there are batteries in the unit while an AC adaptor is being used, normal operation will continue should the line voltage be interrupted (such as from a 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 POWER indicator will become dim when battery power gets too low. Replace the batteries as soon as possible.

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.

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Making the Connections

SL-20_e.book 8

Mono Input Connection Guitar or Bass fig.020

This works well when used in combination with distortion and modulation effects processors.

Keyboard fig.030

Guitar (Bass)

AC Adaptor PSA series (optional)

Guitar Amp (Bass Amp)

AC Adaptor PSA series (optional)

MTR MixerKeyboard

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Making the Connections

SL-20_e.book 9

Stereo Input Connection Guitar or Bass fig.060

Keyboard fig.070

Guitar (Bass)

AC Adaptor PSA series (optional)

Guitar Amp (Bass Amp)

Effector

AC Adaptor PSA series (optional)

MTR MixerKeyboard

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Operating the SL-20

Basic Operation

1. Set the knobs as shown in the figure above.

2. Press the START/STOP pedal to switch the effect on (the START/STOP indicator lights).

3. Turn the EFFECT LEVEL knob to adjust the volume of the effect.

4. Turn the TEMPO knob to adjust the tempo.

* You cannot set the tempo with the SL-20 while MIDI clock is being received.

5. Turn the ATTACK knob to adjust the volume of the attack level.

6. Turn the DUTY knob to adjust the length of time the sound plays.

7. Turn the DIRECT LEVEL knob to adjust the volume of the direct sound when the effect is on.

8. Use the OUTPUT MODE button to set the output mode.

* You can set the output mode only when the SL-20 is connected for stereo output. MONO mode is selected when the SL-20 connected for monaural output. For more detailed information about the output mode, refer to OUTPUT MODE Button (p. 3).

9. Turn the BANK knob to change the slice pattern variation.

10. Turn the PATTERN knob to switch the slice pattern.

* You can set the action performed when slice patterns are switched. For details, refer to Setting the Tempo Response When Slice Patterns Are Switched (p. 16).

11. Use the PEDAL MODE button to set the function that the START/STOP pedal executes when its pressed.

* For more detailed information about the pedal mode, refer to PEDAL MODE Button (p. 3).

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10

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6

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Operating the SL-20

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Panel Operation

Setting the Tempo Turn the TEMPO knob to the right to increase the tempo; to slow the tempo down, turn the knob to the left.

You can adjust the tempo more precisely by turning the knob slowly.

* The tempo setting is stored in memory.

* You cannot set the tempo with the SL-20 while MIDI clock is being received.

Switching the Slice Pattern Use the BANK knob and PATTERN

knob to switch slice patterns. The HARMONIC (BANK knob positions 4 and 5) contains slice patterns with melodic content.

Adjusting the Attack and Duty To increase the volume of the attack, turn the

ATTACK knob to the right.

To increase the length of the sound, turn the

DUTY knob to the right.

Adjusting the Effect Level Use the EFFECT LEVEL knob to adjust the volume levels of the effect sound.

Adjusting the Direct Level Use the DIRECT LEVEL knob to adjust the volume levels of the direct sound when the effect is on.

Switching the Output Mode Use the OUTPUT MODE button to switch the output mode.

* You can select the output mode only when connected for stereo output. MONO is selected when the SL-20 is connected in monaural.

* For more detailed information about the output mode, refer to OUTPUT MODE Button (p. 3).

Switching the Pedal Mode Use the PEDAL MODE button to switch the pedal mode.

* For more detailed information about the pedal mode, refer to PEDAL MODE Button (p. 3).

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8

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Operating the SL-20

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Using the TAP Pedal to Cue the Slice Pattern You can jump back to the beginning of the current slice pattern by pressing the TAP pedal while the TAP indicator is off.

* The slice pattern is not played when the effect is switched off.

Setting the Tempo with the TAP Pedal You can set the tempo for the slice pattern by pressing the TAP pedal in time with the tempo.

* You cannot set the tempo with the SL-20 while MIDI clock is being received.

1. Press the TAP pedal two or more times at the tempo you want to set.

This sets the tempo. The TEMPO indicator flashes in sync with the tempo.

* The tempo setting is stored in memory.

Lit

Blink

Press two or more times

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Operating the SL-20

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Recording/Loop Playback The SL-20 lets you record up to forty seconds of sounds played with slice patterns.

After the recording is completed, loop playback of the sound begins. This allows you to perform with backing from the recorded sound.

* You cannot record while the pedal mode (p. 3) is set to MOMENTARY.

* Recorded phrase lengths are automatically adjusted to measure units.

1. Press and hold down the START/STOP pedal for at least two seconds to put the SL- 20 in recording standby mode.

The START/STOP indicator lights up, and the REC indicator starts flashing.

* You can cancel the recording standby status by pressing and holding down the START/STOP pedal for at least two seconds while the SL-20 is in recording standby.

2. Press the START/STOP pedal to begin recording.

The START/STOP indicator goes out, and the REC indicator lights steadily, instead of flashing.

* Recording begins from the start of the beat.

Play.

3. Recording stops (after it stops, the sounds are loop played back).

Press when the TEMPO indicator lights steadily

Off Lit

4. Loop playback stops.

Off

Press when the TEMPO indicator lights steadily

2. Recording begins.

Off Lit

Hold down at least two seconds

1. Put the SL-20 in recording standby.

Lit Blink

Play.

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Operating the SL-20

SL-20_e.book 14

3. Press the START/STOP pedal to stop recording.

The PLAY indicator lights up; loop playback of the recorded phrase begins.

* Pressing the TAP pedal during loop playback of a phrase causes the SL-20 to return the phrase to the beginning and play it back from that point.

You can enjoy performing solos using recorded phrases as backing sounds.

The volume level of the backing can be adjusted with the EFFECT LEVEL knob, while you can use the DIRECT LEVEL knob to adjust the volume of the solo performance.

4. Press the START/STOP pedal to stop loop playback.

The PLAY indicator goes out.

* Changing tempo by the SL-20 is not available while recording or loop playing back.

* Recorded phrases cannot be permanently stored onboard the SL-20. Loop playback stops, and the recorded phrase is deleted.

* You cannot change the tempo of the recorded phrases.

* This feature does not permit overdubbing.

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Operating the SL-20

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Controlling Functions with an Expression Pedal You can connect an expression pedal (such as the Roland EV-5; optional) to the EXP jack and use the pedal to control a variety of functions.

* With the Direct Level, Effect Level, Attack, and Duty functions, moving the pedal all the way back to the heel position sets the minimum value; moving the pedal all the way forward to the toe position sets the value to the current setting of the corresponding front-panel knob.

* Set the minimum volume for the connected expression pedal to the 0 position.

Setting the Function of the Expression Pedal 1. While holding down the TAP pedal, connect the expression pedal.

The TAP indicator flashes.

2. After confirming that the TAP indicator has flashed, release the TAP pedal.

3. Select the desired expression pedal function with the PATTERN knob.

4. Press the TAP pedal. The TAP indicator flashes rapidly, and the setting is saved to the SL-20s memory.

* Be sure not to turn off the power while the TAP indicator is flashing rapidly. * This setting remains stored even after the power is turned off. * The factory default setting for the expression pedal function is Direct Level.

Function Explanation Direct Level Controls the volume of the direct sound when the effect is on. Effect Level Controls the volume of the effect sound. Output Level Controls the output level when the effect is on. Attack Controls the volume of the attack. Duty Controls the duration of the sound.

PATTERN Function 1 Direct Level 2 Effect Level 3 Output Level 4 Attack 5 Duty

Hold Down Expression pedal (Roland EV-5, etc)

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Operating the SL-20

SL-20_e.book 16

Setting the Tempo Response When Slice Patterns Are Switched

When switching slice patterns, you can have all the patterns play at a set tempo, without the tempos switching to the ones set in each individual pattern.

1. While holding down the PEDAL MODE button, turn on the power to the SL-20.

The upper part of the TEMPO indicator lights in green.

* Plugging into the INPUT R/MONO jack switches on the power.

2. When the TEMPO indicator starts flashing, release the PEDAL MODE button.

3. Use the PATTERN knob to select the method used for setting the slice patterns.

4. Press the PEDAL MODE button.

The TEMPO indicator flashes three times, and the setting is saved to the SL-20s internal memory.

Once the setting is saved, and the SL-20 returns to its normal operating status.

* Be sure not to turn off the power while the TEMPO indicator is flashing.

* This setting remains stored even after the power is turned off.

* The factory default setting for this action is PATTERN 1.

PATTERN Explanation

1

Each time the slice patterns are switched, the tempo changes to that of the pattern you are switching to. When the slice pattern is switched, playback of the new pattern be- gins immediately.

2 The tempo does not switch when the slice patterns are switched. When a new slice pattern is selected, the current slice pattern plays to its end, after which the new slice pattern starts playing.

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Operating the SL-20

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Setting the Output Mode You can have the output mode stereo effect (p. 3) applied to the direct sound when the effect is switched on.

1. While holding down the PEDAL MODE button, turn on the power to the SL-20.

The upper part of the TEMPO indicator lights in green.

* Plugging into the INPUT R/MONO jack switches on the power.

2. When the TEMPO indicator starts flashing, release the PEDAL MODE button.

3. Use the PATTERN knob to set the output mode.

4. Press the PEDAL MODE button.

The TEMPO indicator flashes three times, and the setting is saved to the SL-20s internal memory.

Once the setting is saved, and the SL-20 returns to its normal operating status.

* Be sure not to turn off the power while the TEMPO indicator is flashing.

* This setting remains stored even after the power is turned off.

* The factory default setting for this action is PATTERN 3.

PATTERN Explanation 3 The stereo effect is applied to the direct sound. 4 The stereo effect is not applied to the direct sound.

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Operating the SL-20

SL-20_e.book 18

Synchronizing Performances with External MIDI Devices

MIDI (Musical Instrument Digital Interface) is a universal standard that allows for the exchange of performance data and other information among electronic musical instruments and computers. Once MIDI cables are used to connect together devices equipped with MIDI connectors, each device can send data to, or receive data from any of the others. You can synchronize the SL-20 with performances played on an external MIDI device.

Data Synchronized with the SL-20 The following MIDI messages are handled during synchronization with the SL-20.

Timing Clock Start Continue

Timing Clock corresponding to the tempo is transmitted from the master device (external MIDI device). The slave device (SL-20) synchronizes its performance to the transmitted Timing Clock. Start and Continue MIDI messages are also transmitted when these operations are carried out with the master device (external MIDI device). Upon receiving the Start message from the external MIDI device, the SL-20 starts its slice pattern from the top. Upon receiving the Continue message, the SL-20 continues to playback from the current position in sync with the external MIDI device.

* For more information on the MIDI messages handled by the devices you are connecting, refer to the owners manual for each device.

1. Connect the external device to the MIDI IN connector.

2. Transmit the MIDI messages from the external MIDI device. The SL-20s performance is synchronized according to the MIDI messages from the external MIDI device.

* You cannot set the tempo with the SL-20 while MIDI clock is being received.

* In some cases, when the SL-20 receives the MIDI Clock and synchronization of the performance begins, the SL-20 may pause for several seconds. Afterwards, the performance is synchronized to the transmitted Timing Clock.

* If the MIDI cable is disconnected during a synchronized performance, the SL-20s performance stops playing. Approximately one second after that, the slice pattern begins playing at the SL-20s internal tempo setting.

MIDI INMIDI OUT

Master Slave (SL-20)

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Operating the SL-20

SL-20_e.book 19

Setting the Retrigger Mode The Retrigger Mode setting determines whether or not the slice pattern will be cued to the beginning when the START/STOP pedal is pressed during reception of MIDI Clock.

1. While holding down the PEDAL MODE button, turn on the power to the SL-20.

The upper part of the TEMPO indicator lights in green.

* Plugging into the INPUT R/MONO jack switches on the power.

2. When the TEMPO indicator starts flashing, release the PEDAL MODE button.

3. Use the PATTERN knob to set the retrigger mode.

4. Press the PEDAL MODE button.

The TEMPO indicator flashes three times, and the setting is saved to the SL-20s internal memory.

Once the setting is saved, and the SL-20 returns to its normal operating status.

* Be sure not to turn off the power while the TEMPO indicator is flashing.

* This setting remains stored even after the power is turned off.

* With the factory default settings, Retrigger Mode is set to Off.

PATTERN Retrigger Mode Explanation

5 Off The slice pattern wont be cued to the beginning when the START/STOP pedal is pressed.

6 On Pressing the START/STOP pedal cues the slice pattern to the beginning.

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Returning Settings to Their Factory Defaults

You can return the following settings to their original factory defaults.

Slice Pattern tempos

Expression Pedal Function setting (p. 15)

The tempo response when slice patterns are switched (p. 16)

Output Mode setting (p. 17)

Retrigger Mode setting (p. 19)

* Carrying out the following procedure completely clears the content currently stored in the memory.

1. Switch off the power.

2. While holding down the OUTPUT MODE button, switch on the power.

The MONO indicator flashes.

* Plugging into the INPUT R/MONO jack switches on the power.

3. Press the OUTPUT MODE button.

The MONO indicator flashes rapidly, the setting is stored in memory and the unit returns to its normal state.

* To cancel the setting change and the unit returns to its ordinary state, then before you press the OUTPUT MODE button, operate the START/STOP pedal or TAP pedal.

* Be sure not to turn off the power while the MONO indicator is flashing rapidly.

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Troubleshooting

Power doesnt come on Is the guitar or keyboard connected correctly

to the INPUT R/MONO jack? Check the connections again (p. 7p.9). * The power will not turn on without a plug connected to

the INPUT R/MONO jack.

Have the batteries run down? Replace them with new batteries (p. 6). * The batteries included with the SL-20 are meant only to

confirm that the unit is functional at the factory.

* To reduce batteries consumption, be sure to disconnect the plug connected to the INPUT R/MONO jack whenever the unit is not in use.

Is the specified AC adaptor (PSA series; optional) connected correctly?

Check the connections again (p. 7p.9). Never use any AC adaptor other than the adaptor specified.

No sound/volume is low Is the other equipment connected correctly? Check the connections again (p. 7p.9). Is the volume turned down on the connected

guitar, keyboard, effects processor, or other device?

Check the settings on the connected equipment (p. 7p.9).

Could the ATTACK knob or DUTY knob be turned down?

Use the ATTACK knob or DUTY knob to adjust the level.

Could the connected expression pedal be in the raised position?

When the expression pedal's function is set to Direct Level, Effect Level, or Output Level the effect sound is not output unless the pedal toe is pressed down completely (p. 15).

Have the batteries run down? Replace them with new batteries (p. 6). * The batteries included with the SL-20 are meant only to

confirm that the unit is functional at the factory.

The POWER indicator has gone dim Is the specified adaptor (PSA series; optional)

properly connected? Check the connection once more (p. 7p.9). * Never use any AC adaptor other than one specified for use

with the SL-20.

Have the batteries run down? Replace them with new batteries (p. 6). * When the indicator goes dim or no longer lights

while the effect is on, it means that the batteries must be replaced.

* The batteries included with the SL-20 are meant only to confirm that the unit is functional at the factory.

Sound is distorted Are the EFFECT LEVEL knob, DIRECT LEVEL

knob, and ATTACK knob positioned correctly? Sounds may become distorted when the knobs are

at certain settings. Turn down the EFFECT LEVEL knob, DIRECT LEVEL knob, and ATTACK knob to an appropriate level. If in spite of these measures the sound is still distorted, lower the output level of the device connected to the INPUT jacks.

The volume level of the instrument connected to the INPUT jacks is too low Could you be using a connection cable that

contains a resistor? Use a connection cable that does not contain a resistor.

Cannot save recorded slice sound Recorded slice sounds cannot be saved in the

SL-20s internal memory.

Unable to overdub You cannot overdub during recording.

Sounds input in stereo are output in mono In order to apply effects suitable for the pattern,

some slice patterns mix the input, then output this in mono.

Unable to switch output mode The output mode setting is fixed at MONO

when the output is connected in mono.

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Setting Memo

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Setting Memo

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Main Specifications

SL-20: Audio Pattern Processor Nominal Input Level -20 dBu Input Impedance 1 M Nominal Output Level -20 dBu Output Impedance 1 k Recommended Load Impedance 10 k or greater Tempo 30250 bpm Maximum Recording Time 40 seconds Controls START/STOP pedal TAP pedal EFFECT LEVEL knob DIRECT LEVEL knob BANK knob PATTERN knob ATTACK knob DUTY knob TEMPO knob OUTPUT MODE button PEDAL MODE button Indicators POWER indicator (serves also as the battery check indicator) START/STOP indicator REC indicator PLAY indicator TAP indicator MONO indicator FIXED indicator RANDOM indicator PING-PONG indicator AUTO indicator 3D PANNNER indicator 3D CROSS indicator LATCH indicator MOMENTARY indicator TEMPO indicator

Connectors INPUT jacks R/MONO, L (1/4 inch phone type) OUTPUT jacks R/MONO, L (1/4 inch phone type) EXP PEDAL jack (1/4 inch TRS phone type) MIDI IN connector DC IN jack (DC 9 V) Power Supply DC 9 V: Dry battery LR6/R6 (AA) type x 6, AC Adaptor (PSA series) Current Draw 110 mA (9 V max.) * Expected battery life under continuous use:

Carbon: 7 hours Alkaline: 18 hours These figures will vary depending on the actual conditions of use.

Dimensions 173 (W) x 158 (D) x 57 (H) mm 6-13/16 (W) x 6-1/4 (D) x 2-1/4 (H) inches Weight 1.1 kg / 2 lbs 7 oz (including batteries) Accessories Owners Manual Leaflet (USING THE UNIT SAFELY, IMPORTANT NOTES, and Information) Dry battery R6 (AA) type (carbon) x 6 Options AC Adaptor (PSA series) Expression pedal (Roland EV-5) * 0 dBu = 0.775 Vrms

* In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice.

MIDI Implementation Version: 1.00 1. Receive Data System Real-Time Message Timing Clock Status F8H Start Status FAH * Upon receiving the Start (FAH), the slice pattern

returns to the start of the pattern.

Continue Status FBH * Upon receiving the Continue (FBH), the SL-20

continues to playback in sync with the external MIDI device.

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SL-20_e.book 25

MEMO

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MEMO

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GR

SK

CZ

SI

LV

LT

EE

PL

HU

FI

SE

NO

DK

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DE

FR

UK

For EU Countries

* G 6 0 2 7 1 3 1 - 0 1 *

G6027131R0 1RTC

This product complies with the requirements of EMC Directive 2004/108/EC.

For EU Countries

For Canada

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numrique de la classe B respecte toutes les exigences du Rglement sur le matriel brouilleur du Canada.

NOTICE

AVIS

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 equipmen

Manualsnet FAQs

If you want to find out how the SL-20 Boss works, you can view and download the Boss SL-20 Owner’s Manual on the Manualsnet website.

Yes, we have the Owner's Manual for Boss SL-20 as well as other Boss manuals. All you need to do is to use our search bar and find the user manual that you are looking for.

The Owner's Manual should include all the details that are needed to use a Boss SL-20. Full manuals and user guide PDFs can be downloaded from Manualsnet.com.

The best way to navigate the Boss SL-20 Owner’s Manual is by checking the Table of Contents at the top of the page where available. This allows you to navigate a manual by jumping to the section you are looking for.

This Boss SL-20 Owner’s Manual consists of sections like Table of Contents, to name a few. For easier navigation, use the Table of Contents in the upper left corner.

You can download Boss SL-20 Owner’s Manual free of charge simply by clicking the “download” button in the upper right corner of any manuals page. This feature allows you to download any manual in a couple of seconds and is generally in PDF format. You can also save a manual for later by adding it to your saved documents in the user profile.

To be able to print Boss SL-20 Owner’s Manual, simply download the document to your computer. Once downloaded, open the PDF file and print the Boss SL-20 Owner’s Manual as you would any other document. This can usually be achieved by clicking on “File” and then “Print” from the menu bar.