User manual ROCKTRON R20

[. . . ] USER'S MANUAL R20 Electric Guitar Amplifier (with AGXTM Technology) May be covered by one or more of the following: U. S. Patents #4538297, 4647876, 4696044, 4745309, 4881047, 4893099, 5124657, 5263091, 5268527, 5319713, 5333201, 5402498 and 5493617. Foreign patents pending. Your Rocktron Rampage R20 electric guitar amplifier has been tested and complies with the following Standards and Directives as set forth by the European Union: Council Directive(s): Standard(s): 89/336/EEC, 73/23/EEC EN55 013: 1990/A12:1994, EN55 020: 1988, EN60 065: 1993, EN60 555-2: 1987, EN60 555-3: 1987/A1: 1991 This means that this product has been designed to meet stringent guidelines on how much RF energy it can emit, and that it should be immune from other sources of interference when properly used. [. . . ] Care should be taken so that objects do not fall and liquids are not spilled into the unit through any openings. · The power cord should be unplugged from the outlet when left unused for a long period of time. DO NOT ATTEMPT TO SERVICE THIS EQUIPMENT. THIS EQUIPMENT SHOULD BE SERVICED BY QUALIFIED PERSONNEL ONLY. DO NOT MAKE ANY INTERNAL ADJUSTMENTS OR ADDITIONS TO THIS EQUIPMENT AT ANY TIME. DO NOT TAMPER WITH INTERNAL ELECTRONIC COMPONENTS AT ANY TIME. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY VOID THE WARRANTY OF THIS EQUIPMENT, AS WELL AS CAUSING SHOCK HAZARD. OPERATING TEMPERATURE Do not expose this unit to excessive heat. This unit is designed to operate between 32° F and 104° F (0° C and 40° C). This unit may not function properly under extreme temperatures. 1 Front Panel 1 3 2 4 5 6 8 7 9 1 INPUT jack Connect your guitar output to the 1/4" input jack with a shielded guitar cable. OVERDRIVE GAIN control Adjusts the amount of amplification in the preamp when the OVERDRIVE channel is active. Turn the knob clockwise to increase distortion. OVERDRIVE LEVEL control The LEVEL control adjusts volume in the OVERDRIVE mode. Once GAIN is set, adjust the LEVEL control to a reasonable practice volume. OVERDRIVE button When pressed IN, the OVERDRIVE mode is engaged. CLEAN LEVEL control When OVERDRIVE is NOT active, this is the volume control for the CLEAN setting. EQUALIZER - TREBLE/MID/BASS controls Tone controls, or EQ. [. . . ] When no signal is present, the AGXTM circuit expands down the amplification level to a point where hum and noise are dramatically reduced. 3 R20 Specifications Model No. Power Output Speaker Parameters Dimensions R20 20 Watts 8" Velocity® High Definition by Rocktron 12. 5"W x 9"D x 13. 8"H (318 x230 x 350mm) 10. 82lbs. (4. 9Kg) Spring 100 Volts AC, 50/60Hz or 117 Volts AC, 50/60Hz or 220/240 Volts AC, 50/60Hz, as specified on chassis Weight Reverb Power Requirement CE Approved 4 [. . . ]