User manual ROLAND 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. 3 Panel Descriptions fig. 01 12 1. AC Adaptor Jack Accepts connection of an AC Adaptor (optionally available BOSS PSA-series). [. . . ] BODY Knob This adjusts the resonance of the sound produced by the guitar body, altering the characteristic mellowness and breadth of the acoustic guitar sound. 11. TOP Knob This adjusts the sense of attack and the harmonic content of the upper range. 12. The knob can be used to select any of four tones. STANDARD JUMBO ENHANCE PIEZO This tone is that of the popular Dreadnought acoustic guitar body style. This setting provides a tone characteristic of an oversized guitar body, a tone featuring a rich bass response along with a beautiful high end. Providing a sharper attack than the standard tone, this tone does not become masked by the sounds of other instruments, even in bands and ensembles. This setting provides the tone of a round-back acoustic guitar, with subdued body resonance and a unique attack. 7 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. * 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. * 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 CHECK indicator will become dim when battery power gets too low. Replace the battery as soon as possible. NOTE (Placement) Depending on the material and temperature of the surface on which you place the unit, its bottom cover (rubber) may discolor or mar the surface. You can place a piece of felt or cloth under the bottom cover to prevent this from happening. If you do so, please make sure that the unit will not slip or move accidentally. 8 Connections When Connecting to a Guitar Amp fig. 09 AC Adaptor BOSS PSA-series (sold separately) OUT 9V DC/200 mA Electric Guitar Guitar Amp Multiple Effects, etc. 9 Connections When Connecting to a PA System, Recorder, or Similar Equipment fig. 10 AC Adaptor BOSS PSA-series (sold separately) Electric Guitar PA System Recorder 10 Connections 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 AC Adaptor BOSS PSA-series (sold separately) PA System Effect sound Recorder Mute Electric Guitar Guitar Amp Multiple Effects, etc. 11 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 AC Adaptor BOSS PSA-series (sold separately) PA System Mute Recorder Guitar sound (Direct sound) Electric Guitar Guitar Amp Multiple Effects, etc. 12 Connections The following shows the correspondence between output jack connection status and the sound output. Output from LINE OUT Effects On Effects Off Output from G. AMP OUT Effects On Effects Off Both LINE OUT and G. AMP OUT Connected Only LINE OUT Connected Only G. AMP OUT Connected Effect Sound (Line) Mute Mute Direct Sound Effect Sound (Line) Direct Sound --- --- --- --- Effect Sound (for Guitar Amp) Direct Sound 13 Operating the Unit fig. 03 fig. 04 fig. 05 1. [. . . ] 16). 17 Setting Samples Finger Picking (Single coil, front pickup) fig. 13-1 Solo Phrase (Single coil, front pickup) fig. 13-3 Chord Stroke (Single coil, front pickup) fig. 13-2 Humbucking Setting (Humbucking, front pickup) fig. 13-4 18 Setting Memo fig. 14 fig. 14 fig. 14 fig. 14 19 Setting Memo fig. 14 fig. 14 fig. 14 fig. 14 20 Specifications AC-3: Acoustic Simulator Nominal Input Level. . . . . . . . . . . . . . . . . . . . . Pedal switch, LEVEL knob, REVERB knob, BODY knob, TOP knob, MODE knob Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CHECK indicator (Serves also as battery check indicator) Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]