User manual DIGITECH RP300A

[. . . ] User's Guide IMPORTANT SAFETY INFORMATION LITHIUM BATTERY WARNING CAUTION! The symbols shown above are internationally accepted symbols that warn of potential hazards with electrical products. The lightning flash with arrowpoint in an equilateral triangle means that there are dangerous voltages present within the unit. The exclamation point in an equilateral triangle indicates that it is necessary for the user to refer to the owner's manual. These symbols warn that there are no user serviceable parts inside the unit. [. . . ] It sets a maximum boundary (Threshold) for the strength of a signal. If a signal exceeds the Threshold, it is squeezed back into compliance based upon the compression Ratio setting. Comp On/Off - The Number 1 Knob turns the Compressor on (ON) and off (OF). Attack - The Number 2 Knob adjusts the length of time it takes for the Compressor to respond to a signal exceeding the Threshold. Ratio - The Number 3 Knob adjusts the input to output ratio once the Threshold has been exceeded. For instance, a Ratio of 4 to1 means that a signal exceeding the Threshold by 4 dB will only be allowed 1 dB of increased output. Ranges include: 1. 2-1 (1. 2 to 1), 1. 5-1 (1. 5 to 1), 1. 8-1 (1. 8 to 1), 2. 0-1 (2 to 1), 2. 5-1 (2. 5 to 1), 3. 0-1 (3 to 1), 4. 0-1 (4 to1), 5. 0-1 (5 to 1), 8. 0-1 (8 to 1), 10-1 (10 to 1), 20-1 (20 to 1), and 00-1 (infinity to 1). Threshold - The Number 4 Knob adjusts the maximum strength the signal is allowed to reach before the compressor begins to work. Gain - The Number 5 Knob adjusts the Output Gain from the Compressor. Ranges from 0 to 6 (dB). Amp Modeling/Cab Amp Modeling is a technology which applies the tone of one of several vintage or modern amps to your guitar signal. The RP300A's Amp Modeling also provides an acoustic guitar simulation. The Amp Modeling section includes an A and a B channel. Each channel can be individually programmed to include different settings for Amp Gain, Amp Level, Cabinet Type, Mic Position, and EQ. This allows you to switch from a clean to a distorted setting while retaining all other Effects settings. Switching Amp channels is accomplished instantly with the Amp A/B Footswitch. The Cabinet Modeling simulates different types of miked speaker cabinets. You have your choice of 6 Cabinet Types and 4 Mic Placements in relationship to each speaker cabinet. Amp Channel - The Number 1 Knob selects the A or B channel. You may also use the A/B Footswitch to select the amp channel during the editing process. Amp Type - The Number 2 Knob selects one of the Amp Models or Acoustic Simulator. Choices include: DIRECT - Turns the modeling off BLKFAC - Based on a `65 Fender Twin Reverb BOUTIQ - Based on a Matchless DC30 RECTIF - Based on a Mesa Dual Rectifier HOTROD - Based on a Mesa Boogie Mark II C tweeD - Based on a `57 Fender Tweed Deluxe CLEAN1 - Based on a Vox AC30 top boost CLEAN2 - A clean tube combo setting STACK - Based on a Marshall JCM900 CRUNCH - A nice crunchy combo HIGAIN - Based on a Johnson JM150 High Gain FUZZ - A vintage fuzz distortion ACOUST - A flat top acoustic guitar Marshall® is a registered trademark of Marshall Amplification Plc. Vox® is a registered trademark of Korg UK. [. . . ] Follow steps 4 through 7 of the Expression Pedal calibration section. Expression Pedal Calibration The Expression Pedal on the RP300A needs to be recalibrated for use after a factory reset has been performed. This calibration procedure is automatically entered after a factory reset procedure. In the event the Pedal's calibration fails, or if the Pedal does not function properly, it can be re-calibrated using the Pedal Calibration procedure. The procedure for Calibrating the Expression Pedal is as follows: 1. [. . . ]