User manual GALLIEN-KRUEGER 2000RB

[. . . ] Operating Instructions 2000RB Table of Contents INTRODUCTION 2000RB FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 4 5 FRONT PANEL FEATURES REAR PANEL FEATURES SELECTING AN OPERATING MODE & HOOKING-UP YOUR SPEAKERS GETTING YOUR SOUND USING EFFECTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7 8 10 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MEASURED SPECIFICATIONS TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Introduction We are very proud of the 2000RB, G-K's most powerful bass amplifier to date, and in many ways, the culmination of 27 years in the amplification business. [. . . ] Cables with Speakon connectors are recommended because of the high power/current output of the 2000RB. Refer to section title "CHOOSE AN OPERATING MODE AND HOOK UP YOUR SPEAKERS" for recommended Speakon cables. Remember, if you are in the "Bridge Mode", you will need special Speakon Bridge Cables. (49) & (50) 1/4'' CONNECTORS Provided as back-up outputs for the LEFT/LOW channel. 1/4'' connectors do not have the same power handling as Speakon connectors, and should only be used if Speakon cables are unavailable. Caution : You may not connect less than a 4 ohm load to either of these 1/4'' connectors. If you are in "Bridge Mode" these 1/4'' connectors are not functional. Note: You can not operate the 2000RB in 6 STEREO MODE: "Stereo Mode" is used when you want a stereo output, or when your speakers are not the optimum impedance for "Bridge Mode". For example, if you happen to own two 4 ohm speaker cabinets, you can not use both at the same time in "Bridge Mode". However, in "Stereo Mode", each channel can drive up to two 4 ohm speakers or four 8 ohm speakers (total of 2 ohms per channel). In "Stereo Mode", each of the 2000RB's power amps operates independently, and delivers 500 watts into 2 ohms. Using more speaker cabinets (below 2 ohms per channel) is not recommended, and could result in the Fault Detection System disconnecting the 2000RB's output. For "Stereo Mode" turn the BRIDGE MODE switch (42) to the OFF position. Then connect the RIGHT channel to your speakers via Speakon connectors (43) & (44), and if necessary, with 1/4'' jacks (45) and (46). Remember you can not connect less than a 4 ohm load to either of the 1/4'' jacks. Connect the LEFT channel to your speakers via Speakon connectors (47) & (48), and if necessary, with 1/4'' jacks (49) and (50). Again, remember you can not connect less than a 4 ohm load to either of the 1/4'' jacks. "Normal" Speakon cables are recommended for high power use: Recommended speaker cables: G-K part no. : 304-0007-0 (Speakon -1/4'' , "Normal" cable) G-K part no. : 304-0009-0 (Speakon -"banana", "Normal" cable) G-K part no. : 304-0011-0 (Speakon - Speakon, "Normal" cable) (20) and (21). Note : Each channel can drive up to two 4 ohm speakers of four 8 ohm speakers (total of 2 ohms per channel). Using more speaker cabinets (below 2 ohms per channel) is not recommended, and could result in the Fault Detection System disconnecting the 2000RB's output. For "Biamp Mode" turn the BRIDGE MODE switch (42) to the OFF position. Then connect the HIGH channel to your high frequency speakers via Speakon connectors (43) & (44), and if necessary, with 1/4'' jacks (45) & (46). Remember you can not connect less than a 4 ohm load to either of the 1/4'' jacks. [. . . ] If you want effects like chorus on your high end only: Take the HI OUT (31) into the "mono" input on your chorus effect. Take the stereo outputs from your effect through an adapter into STEREO AUX IN (30). Then use AUX LEVEL (19) on the front panel to control your effects blend. Note : This configuration will add extra high end (whether your effects are on or off), so you may have to adjust your EQ to compensate. [. . . ]