User manual GALLIEN-KRUEGER MICRO BASS

[. . . ] Series III OWNERS MANUAL MB150S/112 MB150E/112 MB150S MB150E MicroBass-III Series Congratulations Table Of Contents 3 4 5 6 7 7 8 9 10 12 Table Of Contents Your purchase of a new Gallien-Krueger MicroBassIII Series Amplifier is surely the result of much careful consideration on your part. For our part, we at Gallien-Krueger are pleased that you chose us and are confident that you will be a satisfied customer. In choosing an MB Series product, you own a unit with many unique features, which will allow you to create your own distinct sound. Safety Information GK Philosophy Setup & Quickstart Front Panel Controls Rear Panel Controls Internal/External Speakers Sample Settings Sound Advice To get the most out of your new purchase please Tech Talk take a few minutes to read through this manual. If you are in a hurry, we suggest you at least read Specifications through the Quick Start and Safety Information sections before setting up your new rig. [. . . ] 17 Chorus On/Off Switch (MBE Only): Turns the Stereo Chorus effect on. This switch is disabled when the RF2 Footswitch is used. 18 Chorus Rate (MBE Only): Adjusts the speed of the Chorus effect. 19 Chorus Depth (MBE Only): Adjusts the depth of the Chorus effect. 20 Output Level: Controls the output level of the amplifier. 21 Limiter LED: LED is lit when the Limiter is on. 22 Limiter On/Off: Press in to turn the Limiter on. 10 Direct Out Mode Switch (MBE Only): When Mode 1 is selected, XLR Right is Mono Post and XLR Left is Mono Pre. When Mode 2 is selected, the Direct Outs are Post Left/Right for Stereo Chorus output. 11 Line Out: Provides a line level signal (post Boost) for interfacing with outboard power amplifiers or an external DI Box. Internal/External Speakers The MB-III Series combos feature one 8 Ohm, 12" low resonance speaker, which delivers surprising low-end response and volume for it's size. While it works great for electric bass, the MB Series combo is particularly well suited for acoustic upright bass. Driving External Cabinets: The MB Series combo electronics are identical to the MB Series heads and are rated for the same maximum power output and speaker load (150W into 4 Ohms or 100W into 8 Ohms). Maximum power is achieved by connecting one 8 Ohm extension cabinet such as the 112MBX in addition to the combo's internal 8 Ohm speaker load. To drive more than one extension cabinet, the combo's internal speaker can be disconnected by pressing the Internal Speaker switch on the back panel. Below is a detailed description of the maximum loads the combos can drive. Maximum Recommended Load: Internal Speaker On: One 8 Ohm extension cabinet. Internal Speaker Off: One 4 Ohm, or Two 8 Ohm extension cabinets. 7 MicroBass-III Series Pop Sample Settings Walking Bass Slap Limiter On Fuzz Tone Limiter On Reggae Limiter On Acoustic Upright 8 MicroBass-III Series Sound Advice Input Volume vs. Output Level: The Input Volume adjusts the signal as it enters the preamp section. Changes to it will have an impact on the Send jack, Boost control, and the Direct Output if it is set to Post mode. Depending on the output signal from your bass, setting the volume below 1 o'clock produces a cleaner signal while setting it above 1 o'clock produces a subtle overdrive effect. The Output Level adjusts the volume of the Internal Power Amplifier, after the preamp (Post EQ). For most playing situations, the Output Level is set between 12 and 3 o'clock. [. . . ] It has such a large dynamic range (60v p-p) that very few instruments can overdrive it. Even most basses with "active" electronics do not need to use the -14dB input pad. The benefit to you is less hiss and much less noise over all. The Valve Effect: As in all GK amplifiers, the MB-III Series preamp incorporates what we call the Valve Effect, or G. I. V. E(Gate Induced Valve Effect). [. . . ]