User manual GALLIEN-KRUEGER 400RB-III

[. . . ] 400RB Series Owners Manual 400RB-III 400RB/112 400RB/115 400RB Series Table of Contents Table Of Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Quick Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Sound Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Installation and Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Push it in and the 400RB is voiced for five string instruments. For some playing styles you may want it in, even with a four string instrument. 6 400RB Series Safety Information Verify Line Voltage and Amperage Before Use: Your new 400RB Series Bass Amp has been factory configured for use with: 120 Volt/60Hz 20 Amp circuit for USA & Canada. 230 Volt/50Hz 10 Amp circuit for Europe & Australia. Proper AC circuit for all other countries. Connecting the amplifier to a line with specifications other than indicated above can create a safety and fire hazard, and may damage the amplifier. If you have any questions about the voltage requirements for your specific model, or about the line voltage in your area, contact your dealer before plugging the unit into a wall outlet. Do Not Use Extension Cords: Safety Information . . To avoid safety hazards, use only the power cord supplied with your unit. If a replacement cord is used, make certain that it is of consistent quality and gauge as the original. We do not recommend using extension cords with this product. As with all electrical devices, do not run power cords under rugs or carpets or place heavy objects on them. Damaged power cords should be replaced immediately with cords meeting factory specifications. Handle The AC Power Cord Gently: When disconnecting the power cord from an AC outlet, always pull the plug, never pull the cord. If you do not intend to use the amplifier for a considerable length of time, disconnect the plug from the AC outlet. Verify AC Circuit Capacity Before Use: The high power output of your amplifier may require heavy current draw under Full-Load conditions. To insure proper performance and avoid potential safety hazards, we recommend connection to line circuits with Amperage specified "as above". Connecting multiple amplifiers to the same circuit, or connecting the amplifier to the same circuit used by other heavy-power devices, such as high-wattage lights, may cause circuit breakers to trip. It is always a good idea to avoid using any audio equipment on the same AC circuit as equipment with motors, such as air conditioners or refrigerators. This will lessen to possibility of power variation and electrical start-up noise affecting your sound. Do Not Open The Amplifier Enclosure: There are no user-serviceable components inside this product. Opening the amplifier enclosure may present a shock hazard, and modification to the product will void your warranty. The only maintenance required is cleaning. If you are going to move your amplifier around frequently, we recommend a road case to protect it from scratches and road wear. . . Moving the Unit: Before moving the unit, be certain to disconnect any interconnection cords with other components, and make sure that you disconnect the unit from the AC outlet. 8 400RB Series Front Panel Controls Front Panel Controls 1-Balanced Direct Out: An electronically balanced output, that you can run to your P. A. system. 2-Pre/Post EQ Button: 9-Low Mid: Selects the direct out signal from before or after the EQ. 3-Input: Boost and cut at 250Hz +6dB -10dB, "Q Optimized, " band pass type. Works on the main body of your sound. 10-Bass: A standard ¼" input jack and input attenuator button. [. . . ] This is a contour response not available with a normal equalizer, and is only found in GK amplifiers. The way a Bass amp deals with the instrument low string is a critical part of it's sound. In fact, a five string instrument requires an entirely different low end response than a four string instrument. No equalizer can make the necessary adjustments to accommodate both, however the String Bass button on the 400RB Series does just that. [. . . ]