Boss AC-3 Owner's Manual
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Boss AC-3 Owner's Manual

Acoustic simulator
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Owner's Manual
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AC & BATTERY
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Summary of Contents for Boss AC-3

  • Page 1 Owner’s Manual AC & BATTERY POWERED...
  • Page 2 Thank you, and congratulations on your choice of BOSS AC-3 Acoustic Simulator. Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY” and “IMPORTANT NOTES” (separate sheet). These sections provide important information con- cerning the proper operation of the unit.

  • Page 3: Main Features

    ● Includes high-quality reverb developed exclusively for the AC-3. COSM (Composite Object Sound Modeling) Composite Object Sound Modeling (COSM) is BOSS/Roland’s innovative and powerful sound modeling technology. COSM analyzes the many factors that make up the original sound, such as the electrical and physical characteristics of the original, and then produces a digital model that can reproduce the same sound.

  • Page 4: Panel Descriptions

    Panel Descriptions fig.01 1. AC Adaptor Jack Accepts connection of an AC Adaptor (op- tionally available BOSS PSA-series). By using an AC Adaptor, you can play without being concerned about how much battery power you have left. * If there are batteries in the unit while an AC adaptor is being used, normal operation will continue should the line voltage be inter- rupted (power blackout or power cord discon-...

  • Page 5: Line Out Jack

    * If this indicator goes dim or no longer lights while an effect is ON, the battery is near exhaustion and should be replaced immedi- ately. For instructions on changing the battery, refer to “Changing the Battery” (p. 16). * The CHECK indicator shows whether the effect is being applied or not.

  • Page 6: Input Jack

    Panel Descriptions 6. Thumbscrew When this screw is loosened, the pedal will open, allowing you to change the battery. * For instructions on changing the battery, refer to “Changing the Battery” (p. 16). 7. INPUT Jack This jack accepts input signals (coming from a guitar, some other musical instrument, or another effects unit).

  • Page 7: Mode Knob

    10 . BODY Knob This adjusts the resonance of the sound pro- duced by the guitar body, altering the char- acteristic mellowness and breadth of the acoustic guitar sound. 12 . MODE Knob Provides for selection of the tone. The knob can be used to select any of four tones. This tone is that of the popular Dreadnought acoustic guitar body style.
  • Page 8 Connections * Raise the amp volume only after turning on the power to all connected devices. * 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.
  • Page 9 When Connecting to a Guitar Amp fig.09 Guitar Amp Multiple Effects, etc. OUT 9V DC/200 mA Connections AC Adaptor BOSS PSA-series (sold separately) Electric Guitar...
  • Page 10 Connections When Connecting to a PA System, Recorder, or Similar Equipment fig.10 PA System Recorder AC Adaptor BOSS PSA-series (sold separately) Electric Guitar...
  • Page 11 When Connecting Both to a Guitar Amp and PA System (or Recorder or Similar Equipment) ■ With Effect On The CHECK indicator lights, the output from the AC-3: G.AMP OUT jack is muted, and the effect sound is output from the LINE OUT jack. fig.11...
  • Page 12 Connections ■ With Effect Off The CHECK indicator is off, the guitar sound (with effect off) is output from the AC-3: G.AMP OUT jack, and the output from the LINE OUT jack is muted. fig.11_02 PA System Recorder Guitar Amp Multiple Effects, etc.
  • Page 13 The following shows the correspondence between output jack connection status and the sound output. Output from LINE OUT Effects On Both LINE OUT Effect Sound and G.AMP OUT Connected Only Effect Sound LINE OUT Connected Only G.AMP OUT Connected Effects Off Mute (Line) Direct Sound...

  • Page 14: Operating The Unit

    Operating the Unit fig.03 1. When you have made the necessary connections (p. 8–p. 12), set the knobs as shown in the illustration. fig.04 2. Depress the pedal switch to turn the effect on. (Make sure that the CHECK indicator lights.) 3.
  • Page 15 fig.06 5. Adjust the breadth of the sound with the BODY knob. fig.07 6. Using the LEVEL knob, adjust the balance of the volume for when the effects are on and when off. Operating the Unit fig.08 7. Adjust the amount of reverb with the REVERB knob.

  • Page 16: Changing The Battery

    Changing the Battery When the indicator goes dim or no longer lights while an effect is on, it means that the battery is nearly dead and must be replaced. Replace the battery following the steps below. * The use of an AC adaptor is recommended as the unit’s power consumption is relatively high.

  • Page 17: Troubleshooting

    Sound is distorted: ● Is the battery low? As the battery is drained, the CHECK in- dicator dims, and the AC-3 may start to function incorrectly. Replace with a new battery (p. 16).

  • Page 18: Setting Samples

    Setting Samples Finger Picking (Single coil, front pickup) fig.13-1 Chord Stroke (Single coil, front pickup) fig.13-2 Solo Phrase (Single coil, front pickup) fig.13-3 Humbucking Setting (Humbucking, front pickup) fig.13-4...

  • Page 19: Setting Memo

    Setting Memo fig.14 fig.14 fig.14 fig.14...
  • Page 20 Setting Memo fig.14 fig.14 fig.14 fig.14...

  • Page 21: Specifications

    Specifications AC-3: Acoustic Simulator Nominal Input Level... -20 dBu Input Impedance... 1 MΩ Nominal Output Level... -20 dBu Output Impedance ... 1 kΩ Recommended Load Impedance ... 10 kΩ or greater Controls... Pedal switch, LEVEL knob, REVERB knob, BODY knob, Indicators ...
  • Page 22 Specifications Current Draw ... 39 mA (DC 9 V) Dimensions ... 73 (W) x 129 (D) x 59 (H) mm Weight ... 440 g /1 lb (including battery) Accessories... Owner’s Manual, Leaflet (“USING THE UNIT SAFELY,” Option ... AC Adaptor (PSA-series) * 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.

  • Page 23: Federal Communications Commission Radio Frequency Interference Statement

    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 24 G6027114R1...

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